AN ENCYCLOP/ZEDIA 
/ 
/ WV E E. 
OF HORTICULTURE. 
489 
Draba— continued. 
they become very effective. They should be placed in 
the sunniest aspect on a rockery; the more effectually 
the plants are matured by the autumn sun, the more 
freely will they return these favours by an abundant 
bloom in early spring.” 
The perennials may be propagated by dividing at 
the roots ; the annuals or biennials by seeds, which should 
be sown in ordinary garden soil, in the open border, in 
spring. Many of the strictly annual species may be 
made biennial by sowing seeds too late to allow the 
plants to flower the first season. Perennials, except 
where otherwise stated. 
D. aizoides (Aizoon-like).* Л. yellow ; scapes naked, smooth ; 
stamens about the length of the petals. March. J, lanceolate- 
linear, keeled, ciliated. А. 2in. to 3in. Europe (South Wales). 
(Sy. En. B. 138.) ` 
D. Aizoon (Aizoon)* f. bright yellow; scapes naked, villous. 
April. /. linear, acutish, keeled, stiff, ciliated. л. 3in. Moun- 
tains of Western Europe, 1819. SYN. D. ciliaris. 
D. ріне (alpine).* jl. golden-yellow, a little smaller than those 
of D. aizoides; scapes naked, pubescent. April 1. lanceolate, 
flat, pilose, with branched hairs. h. 3in. М orthern Europe, 1816. 
D. aurea (golden). Л. yellow; petals obovate, blunt, clawed. 
May. l oblon -linear, acute, entire, pubescent. Stem leafy, 
somewhat branched, velvety. A, біп. Greenland, 1824. Biennial. 
(B. M. 2934.) 
. bruniifolia (Brunia-leaved). fi. yellow; petals twice the 
length of the calyx and stamens ; scapes naked, pubescent. 
June, 7. linear, somewhat keeled, ciliated, acute, loosely rosulate. 
^. Ain. Caucasus, 1825. Plant loosely tufted. (R. G. 780.) 
D. ciliaris (hair-fringed) A synonym of D. Aizoon. 
D. cinerea у). Л. white. ` Early spring. 1. oblong-linear 
entire ; re 146 "4 ог six, entire, sca Stem leafy, 
somewhat pubescent. A. 3in. to6in. Siberia, 1820. Biennial. 
D. ata (cuspidate yellow; sca; naked, villous. 
line «лл deer ER Sin. Tauria, 1821. 
* alis (їсу).* fi bright golden-yellow; sca) naked, 
eovered with " pubescence. May. l in 47s 
entire, hispid with te hairs. A.2in. Si 
allied to Р. aizoides, but differing from it in 
flowered stem, and pedicels which are shorter than the pod. 
.D. lapponica (Lapland). fi. white; scapes naked, v smooth, 
Cet 1. рн эз atte entire, ihe RANA. in. or 3in. 
Alps of Lapland, 1824. - * z р 
Ped у ZUR. 
ч te, with rigi 
Under surface with Rin 
cellent тоок | plant, i ge m bright - green 
Fig. ( 
! nivalis (snowy).* jl. white; scapes naked or one-leaved, 
smooth. ME a Lead ciliated, and somewhat pilose. 
^. lin. or 2in. “Arctic Europe, 1820. Habit more compact than 
ты. 
a yrenalca a (Pyrenean). Rock Beauty. at tirst wmte, 
form vards c ing to = ө scapes naked. May. l. cunei- 
j ^. дїп. to a of South 
palmate, lobed. 
Europe. Syn. Petrocallis 
pyrenaica. (В. 
Draba—continued. 
D. Sauteri (Sauter's) fl. yellow; scapes smooth. ri i, 
spathulate, stiff, Ciliated h. йїп. Switecrland, Tw 
D. tridentata (three-toothed), fi. yellow ; scapes naked, smooth. 
August. l. obovate, narrowed at the base into the petiole, three- 
toothed at theapex, hairy: A. Зіп. Caucasus, 1838. 
D. violacea (violet).* Л. deep violet-purple. 1. opposite, ovate, 
downy. Stem suffruticose, branched: diffuse. A. біп. to l2in. 
Quito Andes, 1867. 
.DRACZENA (from drakaina, a female dragon; the 
inspissated juice becomes a powder, like dragon’s blood). 
SYN. Pleomele. ORD. Liliacem. A genus of about thirty- 
five species of ornamental stove foliage plants, which are 
widely dispersed over the tropies. Flowers generally 
fascicled in panicles, in a few species in dense sessile heads 
or oblong spikes. The differences between Cordyline and 
Dracena (the two genera having been much confused in 
gardens) reside principally in the fruits, &c. The flowers 
of Dracena are generally larger than those of Cordyline, 
and the cells of the ovary in the latter genus contain 
many ovules, whilst іп Dracena they generally contain 
but one. 
Propagation. Dracewnas, and the large group of plants 
grown as such, but which properly belong to the genus 
Cordyline, are easily and rapidly increased by cutting 
up the stems of old plants, in pieces lin. or 2in. long, 
and placing them, at any season, in cocoa-nut fibre, or 
light soil, in the bottom heat of a propagating house. 
The tops of the plants will strike as cuttings, and the 
fleshy base of the stem may also i 
moved, and utilised for propagation. 
soon obtained from the latter, and 
if 
i 
up „ ў 
ү Л 
Young plants are ——— 
from almost every; — 
——— 
Ex 
 FiG. 680. DRACÆNA CONCINNA. - 
be occasionally re- ie. e 
