=A. Mutellina= (Mutellina).* _fl.-heads_ yellowish-green; lower

ones stalked, upper ones sessile. July. _l._ all palmate, multifid,

white. Stem quite simple. _h._ 6in. European Alps, 1815.

=A. pontica= (Pontine). _fl.-heads_ yellow, roundish, stalked,

nodding. September. _l._ downy beneath; cauline ones bipinnate;

leaflets linear. _h._ 3ft. Austria, 1570.

=A. rupestris= (rock). _fl.-heads_ brown, globose, stalked,

nodding. August. _l._ sub-pubescent; cauline ones pinnatifid;

leaflets linear, acute. _h._ 6in. Norway, &c., 1748.

=A. scoparia= (twiggy-branched). _fl.-heads_ small, whitish;

panicle broad, densely packed, about 1-1/2ft. long. Autumn. _l._

much divided; segments hair-like; lower branches very slender. _h._

3ft. to 5ft. East Europe.

=A. spicata= (spicate). _fl.-heads_ brown, spicate. June and

July. _l._ hoary; radical ones palmate multifid; cauline ones

pinnatifid; upper linear, entire, blunt. Stem quite simple. _h._

1ft. Switzerland, 1790.

=A. Stelleriana= (Steller's).* _fl.-heads_ yellow, uninteresting,

round, somewhat erect. Summer. _l._, lower ones spathulate-incised;

upper ones obtusely lobed; end lobes often confluent, about 2in.

long, silvery white. _h._ 1ft. to 2ft. Siberia.

=A. tanacetifolia= (Tanacetum-leaved). _fl.-heads_ brownish;

racemes simple, terminal. Summer. _l._ bipinnate; lobes linear

sub-lanceolate, entire, acuminated, rather downy. Stem sometimes

branching at the base, herbaceous. _h._ 1-1/2ft. Siberia, 1768.

=A. vulgaris= (common).* Mugwort. _fl.-heads_ yellow, somewhat

racemed, ovate. August. _l._ pinnatifid; segments white, and downy

beneath. Stems 3ft. to 4ft. high, furrowed. Britain. The variegated

form of this species exhibits a very pleasing contrast. There is

also a pretty variety with golden leaves.

=ARTHROPHYLLUM MADAGASCARIENSE.= _See_ =Phyllarthron Bojeriana=.

=ARTHROPODIUM= (from _arthron_, a joint, and _pous_, a foot; the

footstalks of the flowers being jointed). ORD. _Liliaceæ_. Very pretty

greenhouse herbaceous perennials, allied to _Anthericum_. Flowers

purplish or white, in loose racemes. Leaves grass-like, radical. They

thrive well in a compost of sandy loam and peat, and may be increased

freely by divisions or seeds.

=A. cirratum= (curled). _fl._ white; racemes divided; bracteas

leafy. May. _l._ lanceolate, ensiform, spreading, 1ft. long. _h._

3ft. New Zealand, 1821.

=A. fimbriatum= (fringed). _fl._ white. July. _h._ 1-1/2ft. New

Holland, 1822.

=A. neo-caledonicum= (New Caledonian).* _fl._ small, white,

on a much-branched, many-flowered panicle. May. _l._ tufted,

linear-lanceolate, barred with black linear markings near the base.

_h._ 1-1/2ft. New Caledonia, 1877.

=A. paniculatum= (panicled).* _fl._ white; racemes divided;

pedicels clustered; inner sepals crenulate. May. _l._ narrowly

lanceolate. _h._ 3ft. New South Wales, 1800. _A. minus_ is a small

form of this species.

=A. pendulum= (pendulous).* _fl._ white, clustered in threes,

pendulous. June to August. _l._ linear, keeled, shorter than the

branched scape. _h._ 1-1/2ft. New Holland, 1822.

=ARTHROPTERIS.= _See_ =Nephrodium= and =Nephrolepis=.

=ARTHROSTEMMA= (from _arthron_, a joint, and _stemon_, a stamen;

in reference to the stamens or connectives being jointed). ORD.

_Melastomaceæ_. Beautiful stove or greenhouse evergreen shrubs. Tube of

calyx turbinate or campanulate, usually clothed with bristles, pili,

or scales; lobes four, lanceolate, permanent, without any appendages

between them; petals four. A mixture of loam, peat, and sand, suits

them best; and cuttings of small firm side shoots will root, in April

or August, under a hand glass in sandy soil. Only three or four out

of the half-dozen species belonging to this genus have been as yet

introduced.

=A. fragile= (brittle). _fl._ rosy; cymes loose, terminal,

few-flowered; calyx glandular. July. _l._ ovate-cordate, acute,

five-nerved, serrated; branches tetragonal, beset with glandular

hairs. _h._ 3ft. Mexico, 1846. Stove species.

=A. nitida= (glossy-leaved). _fl._ lilac; peduncles axillary

towards the top of the branches, three-flowered, longer than the

petioles. June. _l._ ovate, acute, serrulated, glabrous on both

surfaces, shining above, but glandularly hispid on the nerves

beneath. Stems shrubby, erect, and are, as well as the branches,

tetragonally winged, beset with coloured hairs. _h._ 2ft. to 3ft.

Buenos Ayres, 1829 greenhouse species.

=A. versicolor= (changeable-flowered). _fl._, petals obovate,

ciliated, at first white, but at length becoming reddish,

terminal, solitary. September. _l._ petiolate, ovate, serrulated,

five-nerved, discoloured beneath. Plant shrubby; hairy. _h._ 1ft.

Brazil (on the sea shore), 1825. Stove species.

=ARTHROTAXIS.= _See_ =Athrotaxis=.

=ARTICHOKE, GLOBE.= (_Cynara Scolymus_, a cultivated form of _C.

Cardunculus_). As a vegetable, the Globe Artichoke is cultivated for

the use of the immature flower-heads, and is highly esteemed. A good

open position, free from overhanging trees, is best suited for its

culture generally, but, by planting successional suckers in different

aspects, the season may be considerably prolonged. The soil must be

of good depth, rich, and not too heavy. It may be greatly improved

for Artichoke culture by the addition of sea-weeds or salt applied as

manure.

[Illustration: FIG. 151. GLOBE ARTICHOKE.]

_Preparation of Soil._ Trench the ground two spits deep if possible,

mixing a liberal dressing of well-rotted manure in autumn, and ridge

up for the winter, to sweeten. Crude manure full of straw, leaves,

and sticks, often induce fungoid growths, and are most injurious to

the crowns of the plants. Clay or stiff loam is about the worst soil

on which to attempt the culture of this vegetable; this drawback may,

however, to some extent be alleviated by the addition and thorough

amalgamation of a light free soil or liberal dressings of sandy road

drifts, or similar materials. An ill-drained soil is also fatal to good

results. During hot, dry weather, the plants are greatly benefited by

copious applications of clear water and dilute liquid manure; and this

must be especially attended to on such soils as are liable to burn or

dry up in summer.

_Cultivation._ When the beds have been properly prepared, the plants

should be put in them in April or May. Place three together in rows

between 3ft. and 4ft. apart, and about 3ft. from plant to plant.

Water-in carefully to settle the soil around the roots, and apply a

mulching of half-decayed manure, to prevent an undue evaporation of

moisture. During hot, dry weather, give liberal supplies of water, and

the plants will become established as fine stools the first season.

A few heads will probably be produced the first year; but there will

not be much of a crop until the second season, when five or six good

heads will be got from each plant, and for three or four years the

produce will be large if the beds are properly attended to; after

which time it will become desirable to make up new plantations. In

October or November, it will be necessary to apply a good mulching

of straw or fern to the beds, to protect the plants from frost. In

April, all this litter should be cleaned off, a dressing of rotten

manure applied, and the beds forked over and kept clean for the rest

of the season, treating as before described. Great care must be taken

to remove the heads as soon as they are in a fit state; and, when the

whole of them are removed from the stems, cut the latter out as low

as possible. Globe Artichokes will keep for some considerable time if

laid in a cool place, although they will deteriorate in quality. These

plants may be used in the background of flower borders in the kitchen

garden, their handsome foliage being peculiarly well adapted for such

purposes, whilst their economical value is also secured. See Fig. 151.

Where there is plenty of room in light, warm sheds, orchard houses, or

other places where frost can be kept out, some stools can be taken up

with the root intact in the early part of November, placed in boxes

of soil, and well watered-in. When drained, the boxes may be put in

any of those positions for their winter quarters, and, if kept moist,

will develop much earlier than the outdoor crops, provided they are

planted out early in April on a warm border, and protected with mats

when the weather is cold. Propagation may be effected by seeds, or by

suckers from the old stools, the latter being the better plan. In the

former case, sow the seeds in March, on a gentle hotbed, and prick

the seedlings off singly, when large enough, into small pots. Harden

off by the last week in May, and plant out in threes as previously

recommended, protecting the plants from late frosts. During the growing

season, give an abundance of water and liquid manure mulching, to

prevent undue evaporation. In November, well cover with dry litter

which will not heat; and, in hard frosts, or heavy snow, throw a few

mats over the beds, uncovering at the same time as recommended above

for the older plants. To propagate by rooted offsets or suckers, take

up and divide the stools, when they have made a fair amount of growth

in April or early in May, separating the suckers with as many roots and

as much soil adhering to them as possible. The old woody portions are

of little use, but they may be replanted to give off a fresh supply of

suckers for the next year, if required. Propagation by suckers, if they

are to be obtained, has many advantages; but care must be taken, in

removing them from old plants, that some roots are attached, or growth

will be uncertain. Seeds generally produce a large percentage of plants

that are useless, and this is not found out until the flower-heads

appear. On the other hand, suckers reproduce the parent plant, and

if these are previously selected, the superior stock is thereby

perpetuated.

_Sorts._ The Green and Purple are the best for ordinary purposes; and

of these preference should be given to the former. _See also_ =Cynara=.

=ARTICHOKE, JERUSALEM= (_Helianthus tuberosus_). A hardy

tuberous-rooted herbaceous perennial, native of Brazil. The roots are

used as a vegetable principally during the winter, sometimes as a dish,

but more generally for flavouring purposes. Plants will grow in almost

any position, but the best results and largest tubers are obtained

where they receive plenty of room and liberal treatment. Their culture

has been recommended as a substitute for the potato, but they are not

likely to take the place of this vegetable, the flavour being disliked

by many persons. A few are, however, generally acceptable.

_Cultivation._ To ensure the most successful results, trench over a

piece of ground in autumn, and give a light dressing of manure. Fork

over in March; at the same time plant good-shaped tubers (see Fig.

152) in rows about 3ft. apart, and allow from 18in. to 2ft. between the

tubers in the rows. Keep clear of weeds; and, as soon as the foliage

is yellow, in the latter part of the autumn, the roots will be fit for

use. The best plan with this crop is to leave it in the ground till

wanted, or till the end of February, and then to take up every tuber,

replanting those which are wanted for stock, and storing the others

away in a cold dry place. When they commence growth, they turn black,

and are of little use for cooking, save for flavouring soups. This

vegetable has of late years grown into favour as a marketable crop, and

the demand seems to be increasing. Considering its very easy culture,

it is fairly remunerative. _See also_ =Helianthus=.

[Illustration: FIG. 152. TUBERS OF JERUSALEM ARTICHOKE.]

=ARTICULATE, ARTICULATED.= Jointed; having joints.

=ARTILLERY PLANT.= _See_ =Pilea microphylla=.

=ARTOCARPEÆ.= A tribe of the large order _Urticaceæ_.

=ARTOCARPUS= (from _artos_, bread, and _carpos_, fruit; the fruit, when

baked, resembling bread). Bread Fruit. SYNS. _Polyphema_, _Rademachia_,

_Rima_. ORD. _Urticaceæ_. TRIBE _Artocarpeæ_. Included in this most

remarkable tribe, in addition to the Bread Fruit Tree, is the virulent

poisonous _Antiaris toxicaria_, and the economic Cow Tree (_Brosimum

Galactodendron_), of Caraccas. A genus of stove evergreen trees,

requiring a high and very moist atmosphere, a copious supply of water,

perfect drainage, and a compost of two parts rich loam and one of leaf

mould, with the addition of a little silver sand. Under all conditions,

this genus is difficult to propagate; the young and slender lateral

growths are adapted for cuttings; and suckers may be utilised when

procurable, which is very rare.

=A. Cannoni= (Cannon's).* _l._ alternate, petiolate; petiole and

midrib bright red; upper surface glossy, of a rich, full bronzy

crimson hue, beautifully tinted with purple; under surface bright

vinous red. The leaves vary much in form; some are simple and

cordate at the base, with the apex irregularly lobate; some have

the apex regularly three-lobed, with short, entire lobes; and

others, again, are deep three-lobed, being divided nearly to the

base, the segments, of which the centre one is largest, being

slightly sinuate-lobed. _h._ 7ft. Society Islands, 1877. This is a

most distinct and handsome ornamental-leaved plant.

=A. incisa= (incised).* True Bread Fruit. _l._ from 2ft. to 3ft.

long, deeply lobed or incised, deep green on the upper side, paler

below. _h._ 50ft. South Sea Islands, 1793. This is a noble tree

when full grown, and forms a most distinct and beautiful stove

plant. The extraordinary fruit is produced from the axils of the

leaves in large globular heads, and is highly valued as an article

of food in its native country.

=A. integrifolia= (entire-leaved). _l._ oblong, undivided,

sinuated, scabrous, downy beneath. _h._ 30ft. India, 1778.

=A. laciniata metallica= (laciniate, metallic). _l._ bronzy above,

reddish purple beneath. Polynesia.

[Illustration: FIG. 153. ARUM MACULATUM.]

=ARUM= (formerly _aron_, and probably of Egyptian extraction). ORD.

_Aroideæ_. A large genus of ornamental or curious, hardy, greenhouse

or stove perennials, with thick rhizomes and pedate or hastate leaves.

Spathe large, convolute; spadix naked and club-shaped at the top. They

are all of easy culture, and the indoor species will thrive with such

treatment as is given to _Alocasias_, _Caladiums_, &c. Rich soil is

one of the first conditions of success. Like most plants grown for the

beauty of their foliage, rapid and free growth is necessary. A compost

of good rich loam, with a third of sweet manure, thoroughly rotted, or

leaf mould, with some sharp sand, is very suitable. Plenty of moisture

is necessary during the growing season, after which the tender kinds

should be kept moderately dry, warm, and at rest during the winter. The

hardy kinds may be left in the ground. Propagated by seeds or division

of the roots--usually the latter. The best time to divide them is just

as they commence their new growth, securing as many roots as possible

to each division. Any rootless pieces should be placed in heat shortly

after removal; this hastens the formation of roots and excites top

growth. Arums are useful in sub-tropical gardening, and are otherwise

interesting plants both for indoors and outside cultivation; and the

hardy kinds are very suitable for naturalising in woodlands, &c. There

are many other species besides those here described, but the following

list comprises the best. Sub-sections of the genus will be found

treated separately, such as =Amorphophallus= (which _see_), &c.

[Illustration: FIG. 154. ARUM DRACUNCULUS.]

=A. bulbosum= (bulbous). Synonymous with _A. ternatum_.

=A. Dracontium= (Green Dragon). _fl._, spadix subulate, longer than

the oblong convolute green spathe. June. _l._ pedate, entire. _h._

2ft. North America, 1759. Hardy.

=A. Dracunculus= (Common Dragon).* _fl._, spadix lanceolate,

shorter than the ovate, flat, smooth, brown spathe. July. _l._

pedate, entire. _h._ 3ft. South Europe, 1548. Hardy. SYN.

_Dracunculus vulgaris_. See Fig. 154.

=A. indicum= (Indian). _See_ =Colocasia indica=.

=A. italicum= (Italian).* _fl._, spathe ventricose below, opening

nearly flat and very broad above; apex often falling over very

shortly after expansion, sometimes greenish yellow, at others

nearly white; spadix yellowish or creamy white, club-shaped, about

one-third as long as the spathe. Spring. _l._ appearing before

winter, radical, triangular-hastate. _h._ 9in. to 2ft. Channel

Islands and Cornwall, &c. Hardy.

=A. i. marmorata= (marbled).* _l._ marbled with yellow. A very

pretty and effective hardy border plant.

=A. maculatum= (spotted). Lords and Ladies; Cuckoo Pint. _fl._,

spathe ventricose below and above, constricted in the middle, with

inflexed edges when open, spotted with dull purple; spadix usually

purple, shorter than the spathe. Spring. _l._ vernal radical,

hastate-sagittate, with deflexed lobes. _h._ 9in. Britain, &c. This

species is admirably adapted for a corner in the wild garden. See

Fig. 153.

=A. Malyi= (Maly's). _fl._ whitish. Montenegro, 1860.

=A. Nickelli= (Nickel's). Levant, 1859. A form of _A. italicum_.

=A. orientale= (eastern). _fl._ resembling those of _A. maculatum_.

June. _l._ brownish, simple, ovate, slightly sagittate. _h._ 1ft.

Tauria, 1820. Hardy.

=A. palæstinum= (Palestine).* _fl._, spathe 7in. to 11in. long,

purplish blotched or spotted outside, rich velvety black inside and

yellowish white at the base of the tube; spadix much shorter than

the spathe; petiole usually rising 8in. or 9in. above the leaves.

May. _l._ four or five, triangular-hastate, acute, from 6in. to

14in. long, and from 3-1/2in. to 7-1/2in. broad; petioles 12in. to

18in. long. Jerusalem, 1864. Tender.

=A. pictum= (painted). _h._ 2ft. Corsica, 1801. Hardy.

=A. proboscideum= (proboscis-like).* _fl._, spathe greenish purple,

navicular, horizontal, terminated by a straight tail; scapes

arising from among the petioles. May. _l._ radical, about four,

cordate-elliptic, entire. _h._ 6in. South Europe, 1823. Hardy.

=A. spectabile= (showy). _fl._, spathe ovate-oblong, acuminate,

dark purplish inside, longer than the purplish spadix. _l._ broadly

hastate-sagittate. _h._ 1ft. Asia Minor. Half-hardy.

=A. spirale= (spiral). _fl._, spadix lanceolate, shorter than

the oblong-lanceolate spirally twisted brown spathe. May. _l._

linear-lanceolate. Plant stemless. _h._ 1ft. China, 1816. Tender.

=A. tenuifolium= (narrow-leaved).* _fl._, spadix subulate, longer

than the white lanceolate spathe. April. _l._ linear-lanceolate.

Plant stemless. _h._ 1ft. South Europe, 1570. Hardy.

=A. ternatum= (three-leafleted). A synonym of _Pinellia tuberifera_.

=A. variolatum= (variegated). Dalmatia, 1859. Hardy.

=A. venosum= (veined). A synonym of _Sauromatum guttatum_.

=A. Zelebori= (Zelebor's). A form of _A. maculatum_.

=ARUM LILY.= _See_ =Richardia æthiopica=.

=ARUNDINARIA= (altered from _arundo_, a reed). ORD. _Gramineæ_. A small

genus of hardy or nearly hardy shrubby grasses, having strong jointed

stems, and frequently included under _Bambusa_. For sub-tropical

gardening purposes more particularly it is exceedingly ornamental as

an isolated tuft. It thrives best in a deep, rich soil, and requires

plenty of water when in a growing state. Increased by division of the

roots.

[Illustration: FIG. 155. ARUNDINARIA FALCATA.]

=A. falcata= (sickle-shaped).* _l._ linear-lanceolate, very acute,

shortly stalked, very light green. Stems freely branched, deep

green, and very slender. _h._ 3ft. to 6ft. India. An extremely

handsome species for greenhouse decoration; also for outdoor work,

particularly in the South of England, &c. SYN. _Bambusa gracilis_,

of gardens.

=A. Maximowiczii= (Maximowicz's). This Japanese species is believed

to be allied to, if not identical with, _Bambusa Simonii_. Quite

hardy.

=A. Metake= (Metake). _l._ lanceolate, with very sharp points,

dark green, persistent, narrowed into a short leafstalk, 6in. to

12in. long; sheath ample. _h._ 4ft. to 6ft. Japan. A handsome,

hardy, dwarf, much-branched species, forming grand specimens, and

producing flowers very freely. SYN. _Bambusa japonica_.

=ARUNDO= (origin of word doubtful; stated by some authorities to be

from _arundo_, a reed; and others as from the Celtic _arn_, signifying

water). Reed. ORD. _Gramineæ_. A very ornamental group of half or

quite hardy plants, of very easy culture in ordinary garden soil,

preferring damp situations. Panicle loose; calyx two-valved, unequal,

many-flowered; corolla of two very unequal valves; all, except

the lower and imperfect one, surrounded by a tuft of hairs. Fruit

free, covered by the corolla. Arundos are very valuable either for

conservatory decoration, sub*-tropical gardening, or cultivation in

clumps on the turf of the flower-garden or pleasure ground, and the

margins of lakes. Although well worth growing, all are inferior to

their ally, the Pampas Grass. Propagated by seeds or divisions, the

spring being the best time to adopt either method of increase.

=A. conspicua= (conspicuous).* _fl._ silky-white, on large drooping

racemes, and lasting in beauty for several months. _h._ 3ft. to

8ft., but in a good deep and sandy loam it sometimes attains the

height of 12ft. New Zealand, 1843. This fine species grows in dense

tufts, from which arise numerous leathery, narrow, smooth (or

slightly rough), long curving leaves, and erect, slender culms. The

plant is not sufficiently hardy to withstand a severe winter, and

should, therefore, be protected with mats, or be grown in tubs, so

that it can be removed under shelter before the approach of winter.

These precautions are unnecessary in the more southern counties of

England.

=A. Donax= (Donax).* Great Reed. _fl._ reddish, ultimately whitish,

in numerous spikelets, forming a large compact panicle 12in. to

16in. long. Autumn. _l._ alternate, lanceolate-acute, large, and

ornamental, glaucous green, arching. _h._ about 12ft. South Europe,

1648. This also requires protection during winter in the colder

counties. See Fig. 156.

=A. D. versicolor= (various-coloured).* _h._ 3ft. South Europe.

Although much smaller, this variety is far superior to the type

for gardening purposes, and has its leaves ribboned with white. It

requires a deep, well drained, sandy loam to thrive well, and a

thorough winter protection of cocoa-fibre refuse or coal ashes. For

isolated tufts or groups, few plants can equal it. It is propagated

by placing a stem in water, which induces little rooted plants to

start from the joints; these should be separated, potted off, and

kept in frames until thoroughly established.

=A. mauritanica= (Mediterranean Reed). This is a rare greenhouse

species, closely allied to _A. Donax_, but inferior to it.

[Illustration: FIG. 156. ARUNDO DONAX.]

=ARYTERA.= A synonym of =Ratonia= (which _see_).

=ASAFœTIDA.= _See_ =Narthex Asafœtida=.

=ASARABACCA.= _See_ =Asarum europæum=.

=ASARUM= (from _a_, not, and _saron_, feminine; derivation doubtful).

ORD. _Aristolochiaceæ_. Curious hardy herbaceous perennials, with

bell-shaped, three-cleft perianths. They should be planted at the

foot of the rockery, or in borders or woodlands, as they are not very

showy, but are, nevertheless, worth growing, and easily propagated by

divisions, in spring.

=A. canadense= (Canadian).* _fl._ brown, campanulate, on a short

peduncle, sometimes nearly buried. May and June. _l._ in pairs,

broadly reniform. _h._ 1ft. Canada, &c., 1713.

[Illustration: FIG. 157. ASARUM CAUDATUM.]

=A. caudatum= (tailed).* _fl._ brownish-red, with attenuated

or caudate calyx lobes. July. _l_. cordate-reniform, hooded,

sub-acute, or bluntish, slightly pubescent. California, 1880. A

rare and pretty species. See Fig. 157.

The Illustrated Dictionary of Gardening, Division 1; A to Car. A Practical and Scientific Encyclopædia of Horticulture · 第 33 / 72 段