=A. V. gracillima= (most graceful).* _l._ alternate, spreading;

leaflets nearly linear, but slightly narrowed at both ends, having

a prominent ivory-white central rib. South Sea Islands, 1876. An

erect growing species, with an elegantly graceful habit. It is

allied to _A. reticulata_, but is more handsome. This charming

variety is undoubtedly the finest for table decoration, and is

frequently grafted upon stocks of the typical form. It enjoys

plenty of heat. SYN. _A. gracillima_.

=ARALIACEÆ.= An order of trees, shrubs, or (rarely) herbaceous plants,

often pubescent, and sometimes spiny. Flowers variously disposed,

hermaphrodite or unisexual, regular; petals usually five, and valvate.

Leaves alternate, or (rarely) opposite. This order is closely allied to

_Umbelliferæ_; and the best known genera are _Aralia_ and _Hedera_.

=ARAR-TREE.= A common name for =Callitris quadrivalvis= (which _see_).

=ARAUCARIA= (from _Araucanos_, its name in Chili). SYN. _Eutacta_. ORD.

_Coniferæ_. A noble genus of diœcious or sub-diœcious evergreen trees,

with usually imbricated persistent flat sessile scale-like leaves. Male

cones large, cylindrical, terminal; female ones very large, globular,

terminal, with dense ligneous deciduous scales, each bearing a solitary

seed. The majority of the species are not, unfortunately, sufficiently

hardy to withstand our winters out of doors. Few trees can compete

with them in symmetry and elegant proportion for conservatory

decoration, where they may be grown in large tubs, or planted out.

Small plants grown in pots are most serviceable for table and other

decorative purposes. They thrive in a good fibrous loam, mixed with

leaf soil and sand. Propagation by means of seed is the surest and

most satisfactory method; the seed should be sown in pans or boxes, or

if in large quantities, in a bed, with but gentle heat; they usually

take some time to germinate. Cuttings are procured by taking off the

leading shoots, and fixing them firmly in a pot of sand; they first

require a cool place, but may afterwards be subjected to slight warmth.

When rooted, they should be potted off into the soil above mentioned.

The young growths which afterwards shoot from the plant, whence the

cutting, may be taken off and treated in much the same manner. These

are the only methods of propagation worth pursuing.

=A. Balansæ= (Balansa's). _male cones_ cylindrical-conical, 2in.

_female cones_ elliptic globose, 4in.; scales obovate, cuneate.

_l._ arcuately-uncinate, ovate triangular, imbricated round the

distichous, simple branchlets. _h._ 130ft. to 160ft. New Caledonia,

1875. A fine greenhouse plumosely branched tree.

=A. Bidwillii= (Bidwill's).* Bunya-Bunya Pine; Moreton Bay Pine.

_cones_ sub-globose, longest diameter 10in. to 12in., shortest 9in.

to 10in. _l._ ovate-lanceolate, in two nearly horizontal rows,

acuminated, slightly convex above, concave beneath, leathery, deep

shining green. _h._ 150ft. Moreton Bay. Habit very regular and

symmetrical. Greenhouse species.

=A. brasiliensis= (Brazilian). _l._ oblong-lanceolate, much

attenuated at the point, loosely imbricated, deep green; lower part

of the trunk usually free from branches, terminating in a rounded

head. _h._ 70ft. to 100ft. Brazil, 1819. _A. b. gracilis_, and _A.

b. Ridolfiana_ are two forms of this species.

=A. columnaris= (columnar). A synonym of _A. Cookii_.

=A. Cookii= (Cook's).* _l._ awl-shaped, short, densely imbricated

around the frondose branches. Described by Mr. Abbay as having

"a somewhat curious habit, even when growing alone, of shedding

their branches for five-sixths or more of their height, and then

replacing them by a smaller and more bushy growth, so that the tree

at a distance presents a very columnar appearance, the resemblance

being increased by the summit being crowned with a mass of foliage

somewhat like a capital." _h._ 200ft. New Caledonia, 1851. SYN. _A.

columnaris_.

[Illustration: FIG. 144. ARAUCARIA EXCELSA.]

=A. Cunninghami= (Cunningham's).* _l._ on the sterile branches

needle-shaped, obscurely quadrangular, rigid, acute; on the fertile

branches shorter, stouter, closely appressed, bright green; upper

branches ascending, lower ones horizontal. _h._ 100ft. Moreton Bay.

This fine species we have found to be quite hardy on the south-west

coast of England.

=A. C. glauca= (milky-green). A very handsome variety, with silvery

glaucous leaves.

=A. excelsa= (lofty).* The Norfolk Island Pine. _l._ awl-shaped,

curved, sharply acuminated, bright green, densely packed on the

frondose, deltoid, horizontal, or pendulous branches. When well

grown, this is a beautifully symmetrical greenhouse or conservatory

species, attaining to a height of 150ft., and a circumference of

20ft. or more. Norfolk Island. This is especially desirable in a

small state. There are several varieties known, the best being: _A.

e. glauca_, having lighter green, and very glaucous foliage; and

_A. e. robusta_, which is larger in all its parts. See Fig. 144.

=A. Goldieana= (Goldie's).* Allied to _A. Rulei_. _l._ produced in

whorls, pendulous, dark green, varying in size. New Caledonia. Most

distinct and elegant for conservatory decoration.

=A. imbricata= (imbricated).* The Monkey Puzzle. _fl._, male and

female catkins on separate trees; the males are six or seven in

a cluster, pedunculate, yellow, and oval with numerous scales,

imbricated, long, and recurved at the points; the female catkins

are oval, with numerous wedge-shaped scales, with narrow oblong

brittle points; they are produced at the ends of the branches.

_cones_, when fully ripe globular, from 3in. to 4in. in diameter,

dark brown. The branches are horizontal, inflexed, and ascending at

the extremities, and are produced in whorls. _l._ ovate-lanceolate,

sessile, thickened at the base, stiff, leathery, straight,

somewhat keeled-shaped below, and strongly mucronate at the apex;

verticillate, with seven or eight in a whorl, imbricate, and

closely encircling the branches, concave, glabrous, shining, marked

with longitudinal lines, dotted on both sides. _h._ 50ft. to 100ft.

Chili, 1796. A well known hardy tree, of striking aspect, and

indispensable to Arboreta and shrubberies. See Fig. 145.

=A. Rulei= (Rule's).* _male cones_ oblong obtuse; _female cones_

oval. _l._ oblong-lanceolate, with a prominent dorsal nerve, more

closely appressed, and less sharply pointed than in the foregoing

species; imbricated in four rows. Branches horizontal; branchlets

often quite pendulous. _h._ 50ft. Papuan Archipelago.

=A. R. elegans= (elegant).* _l._ smaller; whorls of branches closer

together; branchlets more slender. An elegant form; and, from its

comparative dwarf and graceful habit, should be very generally

grown.

=ARBOR.= A tree. A perennial plant, having a distinct bole or trunk,

from which the main branches grow.

=ARBORESCENT.= Having a tendency to become a tree.

=ARBORETUM.= A collection of hardy trees formed for pleasure or

instruction, and which, when well managed, is a source of much

interesting study. They afford shelter, improve the local climate,

renovate bad soils, &c., and also, by concealing or hiding disagreeable

objects, heighten the effect of agreeable ones, create beauty, and add

value. A properly arranged Arboretum should be constructed with a view

to picturesque beauty, and not systematically, as is usually the case

in Botanic Gardens, although scientific purposes are best served by a

systematic arrangement.

=ARBOR-VITÆ.= _See_ =Thuja=.

=ARBOUR.= A seat surrounded by lattice work, covered by Vines,

Wistarias, or other climbing plants.

=ARBUTUS= (from _arboise_, Celtic for austere bush; in allusion to

the austere quality of the fruit). Strawberry Tree. ORD. _Ericaceæ_.

Trees and shrubs, with evergreen alternate laurel-like leaves. Corolla

globose, or ovately campanulate; petals five, reflexed. Very ornamental

subjects for lawns and shrubberies, thriving well in a light sandy or

peaty soil. They may be propagated by seeds, which should be sown in

sand during March; by budding, and by inarching; the first mentioned

method is the one most generally employed, with good results. The

various sorts may be grafted, budded, or inarched upon _A. Unedo_. The

greenhouse species are rare in cultivation, but their management does

not materially differ from other plants requiring a similar temperature.

=A. Andrachne= (Andrachne).* _fl._ greenish-white; panicles

terminal, erect, clothed with viscid down. March and April. _l._

oblong, bluntish, entire in some, a little serrated in others,

glabrous. _h._ 10ft. to 14ft. Greece, 1724. A fine ornamental tree.

=A. A. serratifolia= (saw-edge-leaved). _fl._ yellowish, disposed

in rather large terminal clusters. _l._ serrated, and narrower than

those of the species. SYN. _A. serratifolia_.

[Illustration: FIG. 145. ARAUCARIA IMBRICATA.]

=A. andrachnoides= (Andrachne-like). A synonym of _A. hybrida_.

=A. canariensis= (Canary). _fl._ greenish-white; panicles erect,

hispid. May. _l._ oblong-lanceolate, serrated, glaucous beneath.

_h._ 8ft. to 10ft. Canary Islands, 1796. Greenhouse.

=A. densiflora= (thickly-flowered).* _fl._ white; corolla oval;

pedicels furnished with three bracteas at the base; panicle

terminal, composed of closely packed racemes. _l._ 4in. to 5in.

long, on long petioles, oblong, acute, sharply toothed, coriaceous,

glabrous above and shining, but downy beneath, the middle nerve

with rusty villi; branches angular, hairy. _h._ 20ft. Mexico, 1826.

Greenhouse.

=A. hybrida= (hybrid).* _fl._ white; panicle terminal, pendulous,

downy. September to December. _l._ oblong, acute, serrated,

glabrous; branches pilose. _h._ 10ft. to 0ft. A half-hardy garden

hybrid; it originated about 1800. SYN. _A. andrachnoides_.

=A. Menziesi= (Menzies').* _fl._ white; racemes axillary and

terminal, panicled, dense-flowered. September. _l._ broad-oval,

quite entire, glabrous, on long petioles. _h._ 6ft. to 10ft.

North-west America, 1827. A noble hardy tree. _A. laurifolia_ comes

close to this species. SYN. _A. procera_.

=A. mollis= (soft). _fl._ rosy, drooping; panicle terminal,

crowded, racemose. June. _l._ oblong-acute, sharply toothed,

coriaceous, clothed with soft pubescence above, and white tomentum

beneath. _h._ 6ft. Mexico. Greenhouse shrub.

=A. mucronata= (mucronate). A synonym of _Pernettya mucronata_.

=A. pilosa= (pilose). A synonym of _Pernettya pilosa_.

=A. procera= (tall).* A synonym of _A. Menziesi_.

=A. serratifolia= (saw-edge-leaved). A synonym of _A. Andrachne

serratifolia_.

=A. Unedo= (Unedo).* The Strawberry Tree. _fl._ white, deep red in

some of the varieties, nodding, in terminal racemose, bracteate

panicles. September. _fr._ large, scarlet, nearly globose,

granular, edible. _l._ oblong-lanceolate, glabrous, serrulated;

branchlets clothed with glandular hairs. _h._ 8ft. to 10ft. West

of Ireland, and South Europe. There are several varieties of this

plant in cultivation. It is one of the greatest ornaments in the

months of October and November--the season when it is in flower,

and when, also, the fruit of the former year is ripe.

=A. Xalapensis= (Xalapan). _fl._ reddish white; corolla ovate;

panicle terminal, composed of many racemes. April. _l._ petiolate,

oblong, acute, quite entire, about 2in. long, glabrous above, but

clothed with brownish tomentum beneath; epidermis separating,

brownish purple. Young branches glabrous, but beset with ramentæ.

_h._ 6ft. to 9ft. Mexico. Greenhouse species.

=ARCHEGONIUM.= The female organ in ferns, &c., analogous with the ovary

in flowering plants.

=ARCTOSTAPHYLOS= (from _arktos_, a bear, and _staphyle_, a grape;

bears eat the fruit of some species). ORD. _Ericaceæ_. Handsome hardy

or half-hardy shrubs or sub-shrubs, agreeing in generic characters

with _Arbutus_, except that the fruit is five-celled and the cells

one-seeded, and not granular on the outside. For culture, &c., _see_

=Arbutus=.

=A. alpina= (alpine).* Black Bearberry. _fl._ white or

flesh-coloured, in terminal, reflexed racemes; pedicels rather

hairy. April. _l._ obovate, acute, wrinkled, serrated, deciduous.

Stems procumbent, trailing. Scotland (but rare), &c. SYN. _Arbutus

alpina_.

=A. nitida= (shining).* _fl._ white; racemes terminal. May. _l._

oblong-lanceolate, acute, smooth on both sides and shining above.

_h._ 4ft. Mexico, 1839. An erect half-hardy evergreen.

=A. pungens= (stinging).* _fl._ white; pedicels close; racemes

short, at first terminal, but at length lateral. February. _l._

ovate-oblong, acute, mucronate, rather pungent, quite entire,

coriaceous, clothed with fine down on both surfaces; branchlets

angular, downy. _h._ 1ft. Mexico, 1839. A dwarf, much branched,

half-hardy evergreen shrub.

=A. tomentosa= (tomentose).* _fl._ pure white, campanulately

urceolate, bracteate; peduncles axillary, shorter than the

leaves, somewhat capitately racemose. December. _l._ oval, acute,

sub-cordate at the base, clothed with white tomentum beneath, on

short petioles; branches hispid. _h._ 4ft. North-west America,

1826. Shrubby species; hardy.

=A. Uva-ursi.=* Bearberry. _fl._ flesh-coloured, with a red mouth,

growing in small clusters at the extremities of the branches.

April. _l._ obovate, quite entire, coriaceous, shining. Highlands

of Scotland and Wales. A hardy evergreen procumbent trailer. SYN.

_Arbutus Uva-ursi_.

=ARCTOTHECA= (from _arktos_, a bear, and _theke_, a capsule; so

named from the roughness of the fruit). ORD. _Compositæ_. Greenhouse

herbaceous perennial, allied to _Arctotis_. Heads radiate; involucral

scales imbricate in many rows, the outer linear, herbaceous, inner

larger, scariose, very obtuse; receptacle honeycombed, bearing many

little fringes; achenes ovate, somewhat four-sided, without wings

or pappus. It thrives in a compost of peat, leaf soil, and loam.

Propagated by divisions of the plant, or cuttings, in spring.

Several species formerly classed in this genus are now included under

_Arctotis_.

=A. repens= (creeping). _fl.-heads_ yellow. July. _l._ petioled,

lyrate-pinnatifid, green and mostly smooth above, white-woolly

beneath. Cape of Good Hope, 1793. A stemless, creeping or decumbent

herb.

=ARCTOTIS= (from _arktos_, a bear, and _ous_, an ear; in reference

to the shaggy fruit). ORD. _Compositæ_. Mostly half-hardy herbaceous

perennials. Involucral bracts numerous, imbricated, scariose on the

margin; receptacle pitted, studded with bristles between the florets;

achenes grooved, crowned with a pappus of membranous scales. The

species of this genus are of easy culture in a compost of loam and leaf

soil. Propagated by cuttings at any time of the year; these should

be pricked in pots of very sandy soil, and placed in gentle warmth;

they must be kept uncovered and moderately dry, or they will rot. The

Arctotis are very handsome plants in sunny, dry positions outside

during the summer months, but they must be protected during winter.

A. acaulis (stemless).* _fl.-heads_ yellow and red. Summer. _l._

hoary on each side, ternate, lyrate. Stem very short, decumbent.

_h._ 4in. Cape of Good Hope, 1759. Very rarely met with.

=A. arborescens= (tree-like).* _fl.-heads_, ray-florets white

above, pink beneath; disk-florets yellow; disposed in large

circular Daisy-like heads. Summer. _l._ linear-oblong, pinnate;

upper ones amplexicaul; lower ones stalked. _h._ 2ft. Cape of Good

Hope, 1815.

=A. argentea= (silvery). _fl.-heads_ orange. August. _l._

lanceolate-linear, entire, downy. _h._ 1ft. Cape of Good Hope, 1774.

=A. aureola= (golden). Synonymous with _A. grandiflora_.

=A. breviscapa= (short-stalked). Synonymous with _A. speciosa_.

=A. grandiflora= (large-flowered).* _fl.-heads_ orange; outer

scales of involucre reflexed, cuneate, oblong, with a broad short

point, somewhat cobwebbed. July. _l._ pinnatifid, serrulate,

three-nerved. _h._ 1-1/2ft. Cape of Good Hope, 1710. SYNS. _A.

aureola_ and _A. undulata_.

=A. reptans= (creeping). _fl.-heads_ white, orange. July. _l._

hairy beneath; lower lyrate toothed; upper lanceolate toothed. Stem

ascending. _h._ 8in. Cape of Good Hope, 1795.

=A. rosea= (rosy). _fl.-heads_ pink. Autumn. _l._

spathulate-lanceolate, repand-toothed, hoary. Stem procumbent. Cape

of Good Hope, 1793.

=A. speciosa= (showy).* _fl.-heads_ yellow; outer scales of

involucre linear recurved. July. _l._ lyrate, pinnatifid, hoary

beneath, three-nerved. Plant stemless. _h._ 1-1/2ft. Cape of Good

Hope, 1812. Closely allied to _A. acaulis_. SYN. _A. breviscapa_.

=A. undulata= (wavy). Synonymous with _A. grandiflora_.

=ARCUATE, ARCUATED.= Curved or bent like a bow; forming an arch.

=ARDISIA.= (from _ardis_, a point; in reference to the acute,

spear-pointed anthers). SYN. _Pyrgus_. ORD. _Myrsineæ_. An extensive

genus of greenhouse or stove, mostly ornamental, evergreen trees and

shrubs. Flowers white or rose-coloured, more or less panicled; panicles

sometimes many-flowered at the extremities of the branches, and longer

than the leaves, sometimes few-flowered and in the axils of the leaves.

Leaves alternate, rarely almost opposite, or three in a whorl, dotted.

Propagated by cuttings of the half-ripened wood taken from the side

shoots of the plant any time from March to September; but, as the

points of these side shoots bear the blossoms and fruit, they are

not well adapted for making good plants. To obtain the best plants,

the largest, ripest, and best-coloured berries should be sown early

in spring, as soon as gathered, in a wide-mouthed pot or seed pan,

well drained and filled with loam and peat in equal parts, with the

addition of some sand, and plunged in bottom heat, the soil being kept

moderately moist. The seeds will germinate in a few weeks after sowing,

and when about 2in. high, the strongest seedlings should be selected

and placed in 3in. pots, the same mixture of soil being used, with

the addition of a fourth part well decomposed manure. After potting,

the plants must be moistened overhead twice a day with a fine rose or

syringe, and be kept in a close atmosphere until the roots have taken

to the fresh soil. When the plants begin to grow again, they should be

removed to a light situation in the house; and when the pots are well

filled with roots, a shift into 6in. pots may be effected, water being

given judiciously until well established, and here they may remain to

fruit. Until the berries are coloured, clear manure water, given once

or twice a week, will be found beneficial. The plants arrive at their

best when about 18in. or 2ft. high; after that, they begin to get naked

at the bottom. It will then be wise to cut the worst plants down to

within 2in. of the pots, in early spring, allowing them to become dry

at the roots before this operation is performed. By giving moisture

to the roots when the cut has become dry, the plants will soon break

into growth again, when some of the worst placed shoots should be

rubbed off, leaving only one or two of the strongest and best placed,

calculated to develop into a well formed plant. When the shoots have

grown 2in. or 3in., the plants should be turned out of their pots,

the soil shaken out from the roots, and the long ends of the roots

trimmed in a little with a knife; they must then be placed in a pot

sufficiently large to hold the roots without squeezing. The plants

should now occupy the warmest end of the house in which they are grown,

care being taken in watering until new roots are formed, when they may

have more air and somewhat liberal supplies of water. As soon as they

are sufficiently advanced in growth, they should be transferred to a

larger-sized pot. With proper treatment, they will flower and fruit the

same season as they are cut down, and form handsome plants. Although

most species of this genus are classed as stove plants, they will

succeed very well in a temperature that does not fall below 45deg. in

winter; and, when so grown, they are not so liable to become infested

with large brown scale and other insect pests. This is particularly the

case with _A. crenulata_, and cool treatment is also favourable to the

ripe berries hanging on the plants for a much longer time than when

grown in a stove. Moreover, they do not suffer so much when removed for

decorative purposes.

=A. acuminata= (taper-pointed). _fl._ nearly white; petals small,

acute, dotted; panicles terminal and axillary, many-flowered. July.

_l._ entire, glabrous, oblong, acuminated, attenuated at the base.

_h._ 6ft. to 8ft. Guiana, 1803.

[Illustration: FIG. 146. FLOWERING BRANCH OF ARDISIA CRENULATA.]

=A. crenulata= (round-notched-leaved).* _fl._ reddish violet;

panicles terminal; pedicels umbellate. June. Berries numerous,

bright coral-like. _l._ lanceolate-ovate, tapering at both ends,

repandly crenulated, pilose. _h._ 3ft. to 6ft. Mexico, 1809.

When grown in a cool atmosphere, as previously alluded to, it is

quite common for one crop of berries to hang on the plants until

another crop is ripe. This is a splendid plant, superior even to

the red-berried Solanums for decorative purposes, for which it is

largely grown. See Fig. 146.

=A. crispa= (curled). _fl._ small, drooping, red; cymes terminal,

usually solitary, often compound; pedicels smooth, finely veined,

umbellate, drooping. July. Berries red, size of peas. _l._

bluntish, oblong-lanceolate, attenuated at both ends, with repandly

crenulated glandular edges, glabrous. _h._ 4ft. India, 1809.

=A. humilis= (humble). _fl._ rose-coloured; peduncles solitary,

bearing each a simple racemose umbel of many pretty, large,

drooping flowers; petals lanceolate, first recurved, afterwards

revolute. June. Berries size of peas, shining, black, juicy. _l._

oblong-lanceolate, acuminated at both ends, glabrous, veined,

shining. _h._ 4ft. India, 1820.

=A. japonica= (Japanese).* _fl._ white; pedicels red,

sub-umbellate, secund, drooping; racemes simple, axillary. June.

_l._ nearly opposite, or three to five in a whorl, on short

petioles, cuneate-oblong, acute, glabrous, serrated; 4in. long.

_h._ 1ft. Japan. Perhaps the hardiest of all the species.

=A. macrocarpa= (large-fruited).* _fl._ flesh-coloured, dotted;

petals ovate, obtuse; racemes terminal, corymbose, almost

sessile, slightly hairy. Berries vermilion coloured, as large as

gooseberries. _l._ oblong, acute, tapering downwards, glandularly

crenated, dotted, close together, leathery, 6in. to 8in. long,

paler beneath, veinless. _h._ 5ft. to 6ft. Nepaul, 1824. A

beautiful shrub.

=A. Oliveri= (Oliver's).* _fl._ rose pink, white eye: corolla

rotate, 1/2in. across; lobes obtuse; heads terminal, consisting of

a number of stalked, many-flowered corymbs; pedicels about twice as

long as the flower. July. _l._ nearly sessile, entire, glabrous,

6in. to 8in. long, by 2in. in the broadest portion; oblanceolate,

acuminate, tapering towards the base. Costa Rica, 1876.

=A. paniculata= (panicled).* _fl._ rose-coloured; panicles

terminal, composed of many alternate compound branches, large and

elegant; petals and sepals ovate. July. Berries red, smooth, size

of a pea, juicy. _l._ glabrous, cuneate-oblong, almost sessile,

reflexed, 6in. to 20in. long, and from 3in. to 5in. broad, crowded

at the ends of the branches. _h._ 8ft. to 10ft. India, 1818.

=A. punctata= (dotted). _fl._ greyish white, sub-campanulate,

secund, beset with dark dots, and the pedicels with dark lines;

peduncles umbellate, terminal, and axillary; umbels involucrated

by deciduous bracts. June. _l._ glabrous, lanceolate, leathery,

repandly crenated, tapering to the base. _h._ 6ft. to 10ft. China,

1822.

=A. serrulata= (finely serrated).* _fl._ deep red; petals ciliated;

calyces and pedicels coloured; panicles terminal; pedicels

umbellate. July. _l._ glabrous, lanceolate, acuminated, wrinkled,

serrulated, beset with rusty dots beneath; branches downy. _h._

2ft. to 3ft. China, 1820.

The Illustrated Dictionary of Gardening, Division 1; A to Car. A Practical and Scientific Encyclopædia of Horticulture · 第 30 / 72 段