Delphinium—continued. 
D. formosum (beautiful).* jt. sky-blue, shaded with indigo ; spur 
rather long, two-cleft, of a violet hue; sepals longer than the 
petals; spikes long. Summer. i. alternate, greyish-green, un- 
.equally palmate, lower segments stalked, p ones sessile and 
tripartite. A. 126. to 3ft. Orient, (F. d. S. 1185.) 
D. grandiflorum (large-flowered).* fl. blue, and the intermediate 
shades to white, either double or single, large; petals shorter 
than the calyx, two lower ones somewhat orbicular, with obliquely 
inflexed entire ; racemes spreading, few-flowered, di- 
verging. June. ù many. into distant linear 
lobes, A. lft. to 2ft. Siberia, 1816. M. regen A very hand- 
lant, with several varieties, the best of which is perhaps 
chinensis, in which the racemes are many-flowered, lateral ones 
diverging. Other forms are : album (white), album-pleno (double- 
white), Jlore-pleno (donble-blue-flowered), pallidum, and rubrum. 
D. hybridum brid - blue, with the two lower petals 
bearded with white $ Midi crowded; spur straight, longer than 
the flowers. June to August. l. many-parted, with linear lobes ; 
les dilated and sheathing at the base. A. 38. to 4ft. 
auria, 1794. Lower part of the plant smooth, upper part vel- 
vety-pubescent. 
D. h. ochroleucum (yellowish-white) Л. white, smooth on the 
outside ; racemes elongated, crowded ; bracts membranaceous, 
broad-lanceolate ; spur straight, blunt, rather pom than the 
pedicel. July and August. 7. many-parted, with linear lobes ; 
Females dilated and sheathing at the base. A. 3ft. Armenia, 
823. SYN. D. albijlorum. 
D. laxiflorum (loose-fiowered). Л. blue; racemes loose, branched. 
June. č. three to seven-lobed, with the lobes oblong, acute, 
deeply pinnatifid; upper ones somewhat three-parted, with 
narrow, entire lobes ; gu not dilated at the base. h. 4ft. to 
6ft. Siberia. (B. R. 24, 30.) 
D. mesoleucum (white-centred), Л. blue, with pale yellow or 
whitish petals. June. Z rather dilated at the base, with wedge- 
shaped segments, which are deeply serrated at the top. е 
part of the stem, as well as the peduncles, pubescent. А. 3ft. 
Native country unknown. 1822. 
Fic. 633. DELPHINIUM NUDICAULE, showing Habit 
D. nudicaule (naked-stemmed).* / red: petals clear yellow, 
lower ones rode with a tro dett fringed limb А ones 
elonga; prominent, hairy at the enc ; spur nearly twice the 
1 h of the calyx; raceme loose, Summer. 1. fleshy, somewhat 
te, tripartite ; sub-divisions of lower leaves obcordate with 
notched lobes, which, in the Bai ones, are oblong and entire, 
Л. 10їп. to 18in. California, 1869. See Fig. 633. (B. M. 5819,) 
D. pictum (spotted) A synonym of D. Rtequienii, 
D. uienii (Requien’s). jl. bluish, hispid ; bracts inserted on 
the middle of the pedicels; spur almost as long as the calyx. 
June. Z, on long stalks, lower ones cleft into five broad euneated 
to five-toothed lobes, upper ones divided into five-linear 
lobes. А. lift. Lower part of herb smooth, or scarcely 
| ent, part hispid with long crowded spreading hairs, ` 
ее r ? 
urope, 1824. Biennial SYN. D. pictum, 
1з; bracteoles inserted at the base of the pedicels ; spur very 
у pedicels twice as lo 
2ft. to 3ft. South 
MPLA) 
LOPÆDIA OF HORTICULTURE. 
45l 
Delphinium— continued. 
D. tricorne (three-horned), Л. very beautiful blue; petals 
shorter than the calyx. May. l. five-parted, with three to five. 
cleft lobes, and linear lobules; petioles smooth, hardly dilated 
at the base. A. 9in. North America, 1806. (L. B. C. $06.) 
D. triste (sad). t dark-brown, suffused with a little red at the 
edges of the sepals, and with a somewhat viol: spur ; га 
loose. July to September. / three to five-parted ; lobes narrow, 
somewhat pinnatifid, acute; u per leaves three-parted, with 
entire lobes ; petioles not dilated at base. А. 2ft. Siberia, 1819, 
DELTOID. Shaped like the Greek A- 
DEMIDOVIA. A synonym of Tetragonia. 
DEMOCRITEA. A synonym of Serissa, ` 
DENDROBIUM (from dendron, a tree, and bios life ; 
the species are epiphytal in their native habitats). Syn. 
Pedilonum. ORD. Orchideæ. A large and elegant genus 
of stove and greenhonse orchids. A few species are very 
fragrant; but the scent of some is objectionable. Lip 
more or less contracted at base into а claw, lying upon, 
or adnate to, the foot of the column; pollinia four. “ The F 
genus,” says Dr. Lindley, “ varies extremely in the habit 
of its species, some being little larger than the mosses 
among which they grow, while others are surpassed in 
stature by few of their order. .... There are some 
species of which the foliage is ancipitous, others having 
it terete, while, in the majority, it is in the usual flat 
condition. A few have no other stems than a wiry creep- 
ing rhizome; others have small conical pseudo-bulbs ; 
many form clavate horny stems, leafy only at the sum- 
mit; but the greater part produce long leafy branches.” 
Cultivation. With but few exceptions, Dendrobiums 
are very easily managed; but it should be borne in mind 
by those ;who undertake their culture, that they require 
the habit and style of growth of the various membersof —— 
this genus; and, as many of the kinds not only thrive best, - 
but display their beauties to a greater advantage, when _ 
suspended from the roof either in baskets or upon blocks - 
of wood, it will at once be obvious that by this means a — 
large saving of space may be effected. When pla 
baskets, they should be surrounded with a little rongi 
peat and sphagnum; but, when grown upon blocks, sphag- 
num only should be used, and this must be fastened with 
some fine copper wire, which will also serve to fix the —— 
In putting orchids upon blocks, it is of 
the highest importance that they shonld be firmly fixed 
if this is not done, they are apt to get their first r 
damaged; but, as a rule,.after they are once m" 
the roots wil hold them tightly enough. Plants cul- 
tivated upon blocks require greater attention in the 
matter of water than those grown in pots. 
growing season, Dendrobiums should J 
the syringe twice each day, morning and e! 
the best times to perform the operation; in a 
will also be necessary to lift them down tw 
times a week, and give them & dippi 
water.. This requires care, in 
roots and young immature Ww 
чет aio both roots and shoots are very tendei 
ritte. It must be remembered, im syringing, dippi 
or otherwise, that cold water is highly injurious ; there- 
fore, it should be warmed to the same temperature ав i 
that of the house. As the gr ths reach maturity — 
withhold the water supply, and remove the plants into diee 
а cooler and drier atmosphere, with full exposure to light ix 
and sunshine, to thoronghl тіреп them. Water must ts 
be very cautiously applied during the resting period, — 
as it is liable to start the plan ктеу. Бойс 
only must be given to pr 
Dendrobiums in pots sl 
