ORD. _Alangiaceæ_. Very showy stove evergreen trees, with alternate,
exstipulate, entire leaves. Flowers few, sessile, in axillary
fascicles; calyx campanulate; petals linear, spreadingly reflexed.
They thrive well in a mixture of loam and peat, or any light rich soil.
Cuttings root readily if planted in a pot of sand, with a hand glass
placed over them, in heat.
=A. decapetalum= (ten-petaled).* _fl._ pale purple, with a
grateful scent, solitary, or two to three together in the axils
of the leaves; petals ten or twelve. June. _l._ alternate,
oblong-lanceolate, quite entire; branches glabrous, spinescent.
_h._ 30ft. Malabar, 1779.
=A. hexapetalum= (six-petaled). _fl._ purple, six-petaled. _l._
ovate-lanceolate, acuminated, velvety beneath. _h._ 30ft. Malabar,
1823.
=ALATUS.= Furnished with a membranous or thin wing or expansion.
=ALBESCENT.= Growing white.
=ALBICANT.= Growing whitish.
=ALBINISM.= A pale condition due to the absence of chlorophyl.
=ALBIZZIA= (named after an Italian). ORD. _Leguminosæ_. Ornamental
greenhouse or hardy trees or shrubs. For culture, _see_ =Acacia=, to
which they are often referred.
=A. Julibrissin= (Julibrissin). _fl._ white; heads pedunculate,
forming a terminal somewhat corymbose panicle. August. _l._ with
eight to twelve pairs of pinnæ, each pinna bearing about thirty
pairs of dimidiate-oblong, acute, rather ciliated leaflets. _h._
30ft. to 40ft. Hardy. Levant, 1745. SYN. _A. Nemu_.
=A. lophantha= (crest-flowered).* _fl._ yellow; racemes
ovate-oblong, axillary, twin. May. _l._ with eight to ten pairs of
pinnæ, each pinna bearing twenty-five to thirty pairs of linear,
bluntish leaflets; petioles and calyces clothed with velvety down.
_h._ 6ft. to 10ft. New Holland, 1803. A very distinct unarmed
greenhouse species, and one of the best for window gardening.
=A. Nemu.= A synonym of _A. Julibrissin_.
=ALBUCA= (from _albicans_, or _albus_, white; the colour of the earlier
species). ORD. _Liliaceæ_. A rather extensive genus of Cape of Good
Hope bulbs, requiring ordinary greenhouse culture. Closely allied to
_Ornithogalum_. Perianth six-cleft, three outer segments spreading;
three inner ones closed over the stamens. They, however, succeed
admirably when grown in a warm sunny position out of doors, if covered
with a hand glass, or litter, during winter. A light loamy soil, with
leaf mould and sand, suits them well. Propagated by offsets from the
old bulb, or seeds. There are but few species worthy of cultivation.
=A. angolensis= (Angolan). _fl._ yellowish, large, in cylindrical
racemes 1ft. to 1-1/2ft. long. _l._ linear-lorate, sub-erect,
fleshy, pale green, 1-1/2ft. to 2ft. long. _h._ 3ft. Angola.
=A. aurea= (yellow).* _fl._ pale yellow, upright; peduncle very
long, erect, spreading. June. _l._ linear-lanceolate, flat. _h._
2ft. 1818.
=A. fastigiata= (peaked).* _fl._ white; peduncle very long,
spreading. May. _l._ linear, flattish, longer than the scape. _h._
1-1/2ft. 1774.
=A. flaccida= (weak). _fl._ pale yellow, with a green keel,
drooping, six to eight in a loose raceme; peduncles spreading at
right angles. July. _l._ lanceolate-linear, obliquely bent. _h._
2ft. 1791.
=A. Nelsoni= (Nelson's).* _fl._, perianth, 1-1/2in. long,
ascending, white, with a dull red stripe down the back of each
segment; scape stout, 4ft. to 5ft. high. Summer. _l._ bright green,
very concave at the basal part, nearly flat in the upper part, 3ft.
to 3-1/2ft. long, l-1/4in. to 2-1/4in. broad, at about one-third
the way up, whence they are gradually narrowed to an acute point.
Natal, 1880. This very handsome species is the best of the genus.
=ALBUMEN.= The substance under the inner coat of the testa of seeds,
surrounding the embryo. It is sometimes absent.
=ALBUMINOUS.= Furnished with albumen.
=ALBURNUM.= The white wood of a tree; the younger wood, not choked up
by sedimentary deposit, and therefore permeable to fluids.
=ALCHEMILLA= (from _Alkemelyeh_, the Arabic name of one of the
species). Lady's Mantle. ORD. _Rosaceæ_. Hardy herbaceous perennials,
with corymbose, apetalous flowers; calyx tubular, with the tube rather
contracted at the apex. Leaves palmate or lobed. Of very easy culture,
in common, but well drained soil. They are well adapted for rockwork
and planting near the front of borders. Easily increased by divisions
of the roots, and seeds. All here described are hardy, except _A.
sibbaldiæfolia_.
=A. alpina= (alpine).* _fl._ greenish, small; corymbose. June. _l._
digitate; leaflets five to seven, lanceolate-cuneated, obtuse,
serrated, clothed with white satiny down beneath. _h._ 6in. Britain.
=A. pubescens= (pubescent). _fl._ greenish; corymbs terminal,
crowded, clothed with a coating of long weak hairs. June. _l._
roundish-reniform, seven-lobed, toothed, silky beneath. _h._ 6in.
to 8in. Caucasus (Higher), 1813.
=A. sericea= (silky).* _fl._ greenish, corymbose. June. _l._
digitate; leaflets seven, lanceolate-obovate, obtuse, connected at
the base, serrated at the apex, clothed with satiny down beneath.
_h._ about 6in. Caucasus, 1813. Much larger in every part than _A.
alpina_, to which it is closely allied.
=A. Sibbaldiæfolia= (Sibbaldia-leaved). _fl._ white, conglomerate;
stem corymbosely many-flowered at the apex. July. _l._ deeply
three-parted, clothed with adpressed pubescence beneath; segments
deeply serrated, lateral ones bifid. _h._ 6in. Mexico, 1823. A
greenhouse species, which should be grown in small well-drained
pots, with a mixture of leaf soil and sandy loam.
=ALDEA.= A synonym of =Phacelia= (which _see_).
=ALDER.= _See_ =Alnus=.
=ALETRIS= (from _aletron_, meal; referring to the powdery appearance
of the whole plant). The American Star Grass. SYN. _Tritonia_. ORD.
_Hæmodoraceæ_. Interesting hardy herbaceous perennials, closely allied
to the _Amaryllids_. Perianth half-inferior, tubular; limb spreading or
funnel-shaped; stamens inserted at base of perianth segments, filaments
flat. They delight in a sunny but damp situation, with peat, leaf
mould, and sand, and are slowly increased by division of the roots.
=A. aurea= (golden).* _fl._ yellow, bell-shaped. _h._ 1ft. to 2ft.
North America, 1811. Similar in habit to _A. farinosa_.
=A. capensis= (Cape). _See_ =Veltheimia viridifolia=.
=A. farinosa= (mealy).* _fl._ white, bell-shaped, in a terminal
spiked raceme, upon stems 1-1/2ft. to 2ft. high. _l._ lanceolate,
ribbed. North America, 1768. A pretty species, forming a spreading
tuft, and possessing intensely bitter properties.
=ALEURITES= (from the Greek word signifying floury; all the parts of
the plant seeming to be dusted with a farinaceous substance). ORD.
_Euphorbiaceæ_. A handsome stove evergreen tree, with small, white,
clustered flowers. Leaves alternate, stalked, exstipulate. Of easy
culture in a loamy soil. Ripe cuttings, with their leaves untouched,
root readily in sand, under a hand-glass.
=A. triloba= (three-lobed).* Candleberry Tree. _l._ three-lobed,
4in. to 8in. long. _h._ 30ft. to 40ft. Moluccas and South Pacific
Islands, 1793.
=ALEXANDERS.= _See_ =Smyrnium=.
=ALEXANDRIAN LAUREL.= _See_ =Ruscus racemosus=.
=ALGAROBA BEAN, or CAROB.= _See_ =Ceratonia=.
=ALGAROBIA.= Included under =Prosopis= (which _see_).
=ALHAGI= (its Arabian name). ORD. _Leguminosæ_. Manna Tree. Greenhouse
shrubs or sub-shrubs, with simple leaves, and minute stipulas. Flowers
few, in clusters. They thrive in pots filled with a mixture of sand,
loam, and peat. Young cuttings will root in sand, with a bell glass
placed over them, in heat; but by seeds, if they can be procured, sown
in a hotbed, is a preferable mode of increasing the plants. They may be
placed out of doors during the summer months.
=A. camelorum= (camels). _fl._ red, few, disposed in racemes along
the peduncles. July. _l._ lanceolate, obtuse, simple; stipulas
minute. Stem herbaceous. _h._ 1ft. to 2ft. Caucasus, 1816.
=A. maurorum= (Moors'). _fl._ purple in the middle, and reddish
about the edges, disposed in racemes along the axillary, spinose
peduncles. July. _l._ obovate-oblong, simple; spines strong, and
longer than those of the above species. _h._ 2ft. to 3ft. Egypt,
&c. The Manna is a natural exudation from the branches and leaves
of this shrub, which takes place only in very hot weather.
=ALIBERTIA= (in honour of M. Alibert, a celebrated French chemist,
author of "Traite des Fievres Attaxiques," wherein he mentions the
effects of Peruvian bark). ORD. _Cinchonaceæ_. A small stove evergreen
tree, very ornamental when in flower. Flowers solitary or fascicled,
diœcious; corolla leathery, tubular. A mixture of loam and peat is the
best soil. Cuttings strike root freely, in a similar kind of soil,
under a hand glass, in a moist heat.
=A. edulis= (edible). _fl._ cream-coloured, solitary or in
fascicles, terminating the branches, almost sessile. June. _fr._
edible. _l._ opposite, leathery, oblong, acuminated, shining above,
and bearded in the axils of the veins beneath. _h._ 12ft. Guiana,
1823.
=ALICANT SODA.= _See_ =Salsola=.
=ALISMA.= (from _alis_, the Celtic word for water). Water Plantain.
SYN. _Actinocarpus_. ORD. _Alismaceæ_. A genus entirely composed of
hardy aquatic species. Flowers three-petalled. Leaves parallel-veined.
Increased by division or seeds. The latter should be sown in a pot
immersed in water, filled with loam, peat, and sand, and the former
root freely in a moist loamy soil. The British species are most easily
grown.
[Illustration: FIG. 56. ALISMA NATANS.]
=A. natans= (floating).* _fl._ white; peduncles simple. July.
_l._ elliptical-obtuse; stem ones floating, on long stalks,
scarcely nerved; those at the base of the plant are long,
linear-lanceolate, membranous scales, or abortive root leaves.
North Wales and Cumberland, but very rare; abundant in other parts
of Europe. See Fig. 56.
=A. Plantago= (plantain).* _fl._ delicate pale rose coloured; scape
branched upwards. July. _l._ ovate, acute, all radical, on long
stalks; branches all whorled, bracteated, compound. _h._ 2ft. to
3ft. Britain. A very handsome aquatic for naturalising. See Fig. 57.
[Illustration: FIG. 57. PORTION OF INFLORESCENCE OF ALISMA PLANTAGO.]
=A. P. lanceolata= (lance-shaped leaves). _fl._ pure white. July.
_l._ lanceolate. Britain.
=A. ranunculoides= (ranunculus-like). In general appearance very
like the last named species, but smaller. Britain.
=ALISMACEÆ.= A small order of aquatic or marsh plants, with
three-petaled flowers, on leafless scapes, and simple radical leaves.
The genera best known are _Alisma_ and _Sagittaria_.
=ALKANET.= _See_ =Anchusa tinctoria=.
=ALLAMANDA= (named in memory of Dr. Allamand, of Leyden, who first
communicated seeds of this genus to Linnæus). ORD. _Apocynaceæ_.
Elegant climbing evergreen stove plants. Peduncles terminal and
many-flowered; corolla funnel-shaped, with a narrow tube, gamopetalous,
large, inflated, five-cleft at the apex. Leaves verticillate. This
genus differs from all others of the same order, in the figure of
the corolla. Of comparatively easy culture. To obtain their beauty
of foliage and flowers, the shoots should be tied to wires placed
within 8in. or 9in. of the glass that forms the roof of the structure
in which the plants are growing. Trained in this way, and the shoots
allowed to ramble in a somewhat natural manner, the effect, when the
plants are in flower, is grander and more pleasing in every respect
than when the shoots are tied to a formal trellis, of whatever shape.
When thoroughly established, they succeed admirably in a compost of
three parts good fibry loam, and one part wood charcoal or coarse river
sand, with some rotten cow manure added. When potting the plants,
make the fresh compost firm round the old balls of soil, and do not
fill the pots too full; leave room for plenty of water, as, when in
active growth, they require a liberal daily supply. They must be pruned
annually in January or February, cutting the previous year's shoots
back to within a joint or two of the old wood. Allamandas should be
exposed to the light as much as possible at all seasons of the year.
In winter months they require but little water, but the drainage must
always be perfect. They are remarkably free from insect attacks of
any kind. It may be also observed that the temperature should never
fall below 55deg. This genus is easily propagated by cuttings, which
will root at any time of the year in a bottom heat of from 70deg. to
80deg. The usual time is, however, in spring, when the old plants are
pruned back. Choose the tops of the shoots, retaining two or three
joints to each cutting; place these in a compost of sand and peat or
leaf mould in equal proportions, singly, in small pots. Press the soil
firmly around each cutting, and, when all are inserted, give a good
watering, and plunge the pots in the propagating bed. Attend to shading
and watering, and in about three weeks' time they will have emitted
roots, and started to grow at the tops. The pots should now be raised
out of the plunging material, and placed upon the surface thereof, and
there allowed to remain two or three weeks longer; when the young roots
will have, by this time, filled the little pots, and a shift into the
larger ones will be necessary. Return the plants to the propagating
bed, but do not plunge them therein. As soon as it is certain that the
roots have commenced growth in the fresh soil, pinch the point of each
plant that is intended to be grown on a trellis. This will cause the
remaining buds to push out fresh shoots; and these, as soon as they
have made two joints or whorls of leaves each, should have their points
pinched out also. By repotting the plants as often as they fill their
pots with roots during the first season of their growth, and pinching
the points out of the shoots twice or thrice in the same time, a good
foundation will be formed, from which the future specimens will spring.
In the case of plants intended to be trained up rafters or pillars,
they should not have their points pinched out until they attain to the
height where it is desirable they should have more than one shoot, and
be repotted as recommended above, for the first year; but, after that,
they will require to be repotted only once a year, and this should be
done soon after the buds have started to grow afresh in the spring.
=A. Aubletii= (Aublet's).* _fl._ yellow, large. June. _l._ four to
five in a whorl, broad-oblong, acuminated, rather hairy beneath.
Guiana, 1848.
=A. cathartica= (purging).* _fl._ yellow, large. June. _l._ four
in a whorl, obovate, obtuse, acutish, with sub-undulated edges,
glabrous. Guiana, 1785. SYN. _A. Linnæi_.
=A. chelsoni= (Chelsea).* _fl._ yellow, large. Summer. This
splendid plant is least suited of any for trellis training, from
its wood being stiffer and harder, and is therefore best for the
roof of a house; it is one of the best kinds for cutting. Garden
hybrid.
=A. grandiflora= (large-flowered).* _fl._ distinct pale yellow,
rather large, very free bloomer. June. Brazil, 1844.
=A. Linnæi= (Linnæus's). Synonymous with _A. cathartica_.
=A. neriifolia= (oleander-leaved).* _fl._ deep golden yellow,
elegantly streaked with orange, between funnel and bell shaped,
the tube being wide, 1in. long; panicle many-flowered. June. _l._
oblong, on short petioles, acuminate. _h._ 3ft. South America,
1847. Shrub erect, glabrous.
=A. nobilis= (noble).* _fl._ bright yellow, rather deeper tinted in
the throat, large, full circular form, but without streaks or any
other markings. July. _l._ in whorls of four or of three, tapered
to the base, sessile, oblong, abruptly acuminate, membranaceous,
hairy on both surfaces, especially beneath and on the midrib.
Brazil, 1867. One of the best species.
=A. Schottii= (Schott's).* _fl._ yellow, large, throat beautifully
striped with rich brown. September. _l._ oblong, acuminated, four
in a whorl, quite glabrous, on both surfaces. _h._ 10ft. Brazil,
1847. This species is a very strong grower, and suits the roof
system best; it is also a very free bloomer.
=A. verticillata= (whorl-leaved). _fl._ yellow, large. June. _l._
usually six in a whorl, ovate-oblong, obtuse, quite glabrous. South
America, 1812.
=A. violacea= (violet). _fl._ purple. Brazil, 1859.
=ALLANTODIA= (from _allantos_, a sausage; in reference to the
cylindrical form of the indusium). ORD. _Filices_. A greenhouse
monotypic genus, differing from _Asplenium_ in the dehiscence of the
involucre, and it may receive similar treatment to the Spleenworts.
Sori dorsal, linear-oblong, attached to the primary veins. Involucre
the same shape as the sorus and quite inclosing it, bursting in an
irregular line down to the centre.
=A. Brunoniana= (Brown's).* _fronds_ often 1ft. to 2ft. long,
1/2ft. to 1ft. broad; pinnæ 3in. to 6in. long, 1in. broad, entire.
_sori_ confined to the anterior vein of the first fork. Himalayas,
up to 6000ft., &c. SYN. _Asplenium javanicum_.
=ALLARDTIA.= _See_ =Tillandsia=.
=ALLEYS.= Small walks of various widths, but generally 1-1/2ft. or
2ft. wide, and formed in right lines, parallel to the main walks, or
borders, sometimes covered with a thin coat of sand, gravel, or shells,
or paved with flints, pebbles, &c. Spaces left between beds of seedling
plants are generally meant when alleys are referred to.
=ALL-HEAL.= _See_ =Prunella vulgaris=.
=ALLIACEOUS.= Pertaining to the _Garlic_ family.
=ALLIARIA.= _See_ =Sisymbrium=.
=ALLIGATOR APPLE.= _See_ =Anona palustris=.
=ALLIGATOR PEAR.= _See_ =Persea gratissima=.
=ALLIUM= (from _all_, meaning hot or burning; in allusion to the
well-known properties of the Onion tribe). Including _Porrum_,
_Schœnoprasum_. ORD. _Liliaceæ_. Hardy bulbous plants, with flat or
terete radical leaves, and capitate or umbellate flowers, enclosed in
a membranous spathe at the summit of a slender, naked, or leafy scape;
perianth spreading or campanulate. They are of very easy culture,
increasing rapidly by offsets. The little bulbs, which are produced in
clusters, may be separated and replanted, in autumn or early spring,
about 4in. deep. Seeds are also easily obtainable. These may be sown
thinly in light soil, in February or March, where they should remain
until the autumn or following spring, when they may be transplanted
to their flowering situations. During the growing season, all the
attention required will be to keep the plants free of weeds, and place
stakes to the tall-growing kinds.
=A. acuminatum= (taper-pointed).* _fl._ deep rose, 1/2in. to 1in.
across, in many-flowered umbels. July and August. _l._ rather
shorter than the stems, very narrow, only about a line wide. _h._
6in. to 10in. North-West America, 1840.
=A. a. rubrum= (red). _fl._ deep red-purple; in other respects like
the type. California.
=A. ascalonicum= (Eschallot). _fl._ purple; umbels globose; scape
rounded. Summer. _l._ subulate. _h._ 9in. Palestine, 1546. For
culture, _see_ =Eschallot=.
=A. azureum= (sky-blue).* _fl._ deep sky-blue, with a dark line
through the middle of each division; umbels dense, globular, longer
than the spathes which envelop them before expanding. Summer. _l._
triangular, from 6in. to 12in. long. _h._ 1ft. to 2ft. Siberia,
1830. One of the handsomest species grown.
=A. Bidwelliæ= (Mrs. Bidwell's).* _fl._ bright rose, about 1/2in.
across, in few-flowered umbels. July. _l._ narrow, rather longer
than the stem. _h._ 2in. to 3in. Sierra Nevada, 1880. A very
charming little species for the rockery.
=A. Breweri= (Brewer's).* _fl._ deep rose, nearly or quite 1in.
across, in few-flowered umbels. July. _l._ much longer than the
flower-stem, 1/4in. or more broad. _h._ 1in. to 3in. California,
1882.
=A. Cepa= (common Onion). _fl._ white; scape ventricose, longer
than the leaves. June, July. _l._ fistular, rounded. _h._ 3ft. For
culture, _see_ =Onion=.
=A. C. aggregatum.= Aggregated, Tree, or Potato Onion. _See_
=Onion=.
=A. cœruleum= (blue-flowered).* _fl._ blue, in large compact
globular heads. June. _h._ 8in. Russia, 1840. Very distinct.
=A. Douglasii= (Douglas'). Synonymous with _A. unifolium_.
=A. Erdelii= (Erdel's). _fl._ white, keeled with green, in compact
umbels. _h._ 6in. Palestine, 1879. A rare but pretty species, and
should be planted in a warm position on the rockery.
=A. falcifolium= (sickle-leaved).* _fl._ pale rose, 1/2in. to
3/4in. across, in few-flowered umbels. August. _l._ two in number,
thick, broadly linear, falcate. _h._ 2in. to 3in. North-West
America, 1880.
=A. falciforme= (sickle-formed). Probably a variety of _A.
unifolium_, with pure white flowers, in several-flowered umbels.
_h._ 6in. California, 1882.
=A. flavum= (golden). _fl._ yellow, bell-shaped, and somewhat
drooping, in pretty umbels; scape leafy at the base. _l._ round,
not hollow, flattish above the base. _h._ about 1ft. Italy, 1759.
A slender species.
=A. fragrans.= _See_ =Nothoscordum=.
=A. karataviense= (Karatavian). _fl._ white, in dense globose
heads. May. _l._ very broad, flat, glaucous, sometimes variegated.
_h._ 6in. Turkestan, 1878.
=A. Macnabianum= (MacNab's).* _fl._ deep magenta, a colour quite
unique in this family, in large umbels. _l._ nearly as long as the
stem, channelled, about 1/4in. broad. _h._ 1ft. North America.
=A. magicum= (enchanting). Synonymous with _A. nigrum_.
[Illustration: FIG. 58. ALLIUM MOLY.]
=A. Moly= (Moly).* _fl._ bright yellow, numerous, in compact
umbels. Spring. _l._ few, broadly lanceolate. Stem sub-cylindrical.
_h._ 10in. to 15in. South Europe, 1604. A very old favourite;
bright-flowered and very fine in masses. See Fig. 58.
=A. Murrayanum= (Murray's).* _fl._ rosy purple, in large heads.
_l._ narrow, longer than the stem. _h._ 1ft. North America. A good
variety of _A. acuminatum_.
=A. mutabile= (changeable). _fl._ white, changing to rose, in
many-flowered umbels. July. _l._ shorter than the stem, narrow,
channelled. _h._ 12in. to 24in. North America, 1824.
=A. neapolitanum= (Neapolitan).* _fl._ white, with green stamens,
numerous, in a loose umbel, on stems exceeding the leaves in
length; pedicels much longer than the flowers. Early summer. _l._
two or three, sheathing the flower stem, strap-shaped, about 1in.
across. _h._ 15in. to 18in. South Europe, 1823. Probably the most
ornamental white-flowered species.
=A. nevadense= (Sierra Nevada). _fl._ white, or pale rose, about
1/2in. across, in several-flowered umbels. July. _l._ flat, rather
longer than the stem, about 1/4in. wide. _h._ 3in. to 6in. Sierra
Nevada and Utah, 1882.
=A. nigrum= (blackish).* _fl._ dull violet, or whitish, with a
green vein, very numerous, in a large umbel. Summer. _l._ thick,
broadly lanceolate, acute, ciliated, toothed at the edges, at first
erect and glaucescent, afterwards green and spreading, much shorter
than the stem. _h._ 2-1/2ft. to 3-1/4ft. South of Europe. Very
vigorous and free flowering. SYN. _A. magicum_.
=A. paradoxum= (wonderful). _fl._ white, gracefully pendulous,
borne on long footstalks springing from little nests of yellow
bulbils. Spring. _l._ one or two, as long as the scape,
linear-lanceolate, acute, keeled, striated, smooth, 1/4in. broad,
drooping and recurved. _h._ 9in. to 14in. Siberia, 1823.
=A. pedemontanum= (Piedmont).* _fl._ rosy-purple, large,
bell-shaped, in large, graceful drooping clusters. July. _l._
lanceolate, shorter than the stem. Piedmont, 1817. A neat little
plant for rockwork, or warm border. One of the handsomest species
grown.
=A. reticulatum= (netted). _fl._ varying from pink to white.
Summer. _l._ narrow, or almost filiform, shorter than the stem.
_h._ 9in. to 15in. North-West America, 1882. A rare species.
=A. r. attenuifolium= (attenuate-leaved).* This may be regarded as
an extremely handsome white-flowered variety. North-West America.
=A. roseum= (rose-coloured).* _fl._ pale lilac-rose, large, in
umbels of ten or twelve; stems round, rather longer than the
leaves. Summer. _l._ strap-shaped, channelled, rolled inwards at
the top, not hairy. _h._ 12in. to 16in. South Europe, 1752.