AN ENCYCLOPADIA 
OF HORTICULTURE. 
Dichorisandra—continued. 
drier, but must not be exposed to cold. Propagated by 
divisions, by cuttings, or by seeds. Besides the species 
described below, about seven or eight others are be- 
lieved to have been introduced. 
D. albo-mar, ta (silvery-margined). /. іп a dense raceme, 
2in. long; sepals white, blue, and puberulous outside ; petals 
larger, rhomboid-ovate, blue, the lower part white. /. lanceolate, 
acuminate, Stem e labrous, simple or branched above. 
2ft. to 3ft. Brazil, 1 (В. ©. 569.) * 
D. leucophthalmus (white-eyed).* fl, often three together, 
each on a branch of uncle, large; peduncle or scape 
emerging from a joint at or near the base of the stem, pros- 
trate, glabrous, flexuous, panicled, here and there sheathed with 
brown scales; bracts from a broad base, subulate, herbaceous; 
sepals oblong, concave, spreading, between herbaceous and 
scariose; pe four times as large as the sepals, broadly 
obovate, ing, blue-purple, white in the lower half; 
anthers bright yellow. June. i. 4in. to біп. Jong, elliptic-lanceo- 
te, sharply acuminated, moderately attenuated below, till they 
form the sheath; striated, patent, and often recurved. Stems 
two or three together, erect, terete, jointed, 9in. or more high, 
glabrous. А. lft. to 12%. Brazil (В. M. 4733.) 
D. musaica (mosaic).* ў. bright azure-blue, disposed in a terminal 
spike or truss. Autumn. Jl. ovate, acute, dark green above, pro- 
fusely pencilled and veined with zigzag transverse lines of pure 
white; under side deep — Stems terete, chequered, 
surrounded at the nodes by close brownish sheaths. A. ljft. 
Maynas, 1866. (Е. d. S. 1711-2.) 
D. oxypetala (sharp-petalled). ., corolla of three reddish- 
purple-veined, ovate, acute, spreading petals, with a white spot 
at the base; pedicels remote, two-flowered, the upper ones very 
short, the lowest one long, deflexed ; pedicels and flowers with 
small brown ovate bracts ; calyx of three ovate, acute, гоно 
reddish-purple veined petals, with a white spot at the base; 
anthers linear-oblong, whitish at the base. August. J. confined 
to the upper part of the stem, alternate, elliptical, attenuated, 
both at the base and at the extremity, entire, striated, the sides 
a little incurved, very glabrous, except a little pubescence at the 
base, on the under side. Stem oblique, simple, or forked. A. 2it. 
1810. (B. M. 2721.) 
D. picta (spotted). Л. purple-blue, with a very distinct white spot 
. at the base, about Jr iod = iode beet terminal de. 
September. J. broad-elliptic, about 43in. long, pe with a broad 
stripe of brown on each side, but € with green. Branches 
short. A. 6in. Brazil, 1830. y o " 
D. Saundersii (Saunders). jf. jin. jameter, crowded ina 
dense ovoid, almost capitate panicle, 2їп. long; pedicel very 
short, glabrous ; sepals oblong, obtuse, concave, glabrous, white, 
tipped with violet; petals more than twice as large as the sepals, 
obovate, concave, rounded at the tip, violet except at the base, 
1. numerous, sub-bifarious, lanceolate, 
; mouth rounded. Stem slender, very sparingly branched. 
Ба slender, cylindrical, terete, pilose. 2ft. Brazil, 187. 
а red)* Л. of a rich dark blue, to which 
ora (thyrse-flowered). . of a ric. ue, to whic! 
EC ht dde anthers form а quesos contrast; thyrse com- 
pact, n 6in. or 7in. in length. mer and autumn. J. broad, 
, extremely dark green. h. 4ft. Brazil, 1822. A 
sheathing, 
d stove plant, of easy culture, now, unfortunately, rarely 
eod of aon eA flowers of the order. (B. R 682.) 
] wa 1. broadly ovate, dark green, with longitudinal 
D. — 75). 5 o! : 
shaded to black, strikingly undulated or waved ; under surface of 
wa ; Amazons, 1879. A very dwarf-growing species. 
(F. d. S. | 
D. vittata (striped). l. purplish-green, with two silvery stripes. 
Brazil, 1871. 
DICHOSMA. See Agathosma. i 
DICHOTOMOUS’ Divided in twos; stems con- 
tinually dividing into double ramifications. 
CHROSTACHYS (from dichros, two-coloured, and ` 
EM a spike; in allusion to the lower flowers of each 
spike differing in colour from those above) ORD. Legu- 
minose. А small genus of four ог five species of rigid 
stove shrubs, extending over tropical Africa and Asia, 
one being confined to Australia. Flowers, upper ones 
yellow, hermaphrodite; lower ones either white, pink, 
or purple, neuter. Leaves bipinnate ; leaflets usually 
small. The under-mentioned is probably the only one 
yet in cultivation. For culture, see eso MR is 
- . fi., the u [o e brig 
merde deu produ / in pendulous spikes 
. 1. glaucous-green, bipinnate, with fourteen 
phi orig pinnz ; leaflets from twenty-six to thirty pairs. 
. Angola, 
DICHROTRICHUM (from dichroos, having two 
colours, and thriz, hair; in reference to the tufts of huir 
at the end of each seed, in the original species, being 
differently coloured). ORD. Gesneracee. A small genus of 
showy stove perennials, with habit of, and requiring treat- 
ment similar to, ZBschynanthus (which see). Probably 
the only one in cultivation is that here described. 
D. ternateum (Ternate)* fi. crimson-red, tubular, sub-umbel- 
late, in loose cymes, July.” J. unequal, o ite; the large on 
cordate. Moluccas, 1872. (B. H. 181,22) ^ e large one 
DICKSONIA (named after James Dickson, a famons 
British cryptogamic botanist), Including Balantiwm, 
Cibotium, Dennstedtia, Patania, Sitolobium. Orp. Filices. 
A genus of about forty species of stove and greenhouse 
ferns, the majority being natives of tropical America and 
Polynesia. Fronds mostly large, decompound, coriaceous. 
Involuere inferior, sub-globose, coriaceous or membrana- 
ceous, cup-shaped, and entire or more or less distinctly 
two-valved. Sori placed at the apex of a vein, intra- 
marginal. A compost of light, fibrous loam and peat, in 
equal parts, with about one-third sand, is most suitable. 
For general culture, see Ferns, 
D. adiantoides (Adiantum-like) rhiz, peer ы fronds dipin- 
nate; lower pinnz 1ft. to 2ft. long, біп. to 12in. broad; pinnules 
linear, cut down nearly to the rachis ; segments oblong-rhom- 
boidal, blunt, with two to four bluntish lobes in pre” side. 
sori two to eight to a segment, West Indies, 1828. Stove. 
(H. S. F. i. 26 B.) 
D. antarctica (Antarctic).* cau. 30ft. to 35ft. high. sti. under 
lft. long, scaly. fronds rhomboid, tripinnate, 5ft. to 6ft. long, 
2ft. to Sft. broad in centre; central pinne 1%. to ^ ig long, 4in. 
to bin. broad; pinnules sessile, linear, lin. b ; segments 
oblong. sori six to ten to lowest segment. 1786. Arborescent. 
Greenhouse. 
D. arborescens (tree-like). cau. 10%. hi te; 
lower pinn:e lft. to 15ít. long, біп. to 9in. i emm linear, 
deeply cut; segments Jin. long, oblong. sori two to six to а lobe, 
large, тте St. Helena, 1824, ^ Arborescent. Greenhouse. 
(H. S. F. i. 224.) 
D. assamicum (Assam) А synonym of D. Barometz. 
D. Barometz (Barometz) fronds tripinnate ; lower pinnze ovate- RG 
lanceolate, lft. to 2ft. broad; Качи linear -acumi cut, 
nearly to the rachis; segments linear-oblong, acute, sub- ; 
sort two to twelve to a lobe., Assam, China, 1824. Arborescent. 
Greenhouse. SYN. D.assamicum. (Н. S. Е. і. 29 в.) 
D. Berteroana (Bertero's)* cau. 6ft. to 15%. fronds 
rhomboid, tripinnate; pinnz oblong - lanceolate, to lift. 
long, Sin. to 6m. broad; pinnules sessile, lanceolate, about 
broad; segments close, lanceolate, sterile sub-entire, fertile deeply 
innatifid. Juan Fernandez, 1880. Arborescent. Greenhouse. 
previous page, Fig. 656, for which we аге indebted to 
Messrs, Veitch and Sons, (Н. S. Е. i. 23 А.) 
Chamissoi (Chamisso's) fronds tripinnate ; lower 
ovate-lanceolate, lft. to ljft. long, біп, to 9in. broad; 
linear-acuminate, cut down to the rachis below ; 
bluntish. sori two to twelve to a lobe. 
1876. Stove. 
ve. 
D. cicutaria (Сены, 
lower pinnz ift. to lift. 1 
acuminate, deeply cut; 
pinnatifid. sori two 
D. Culcita (Culcit). 
fronds lft. to ljft. 1 
deltoid, their divisions 
ual-sided, deeply-toothed 
dense woolly cov 
commerce; it is 
See Fig. 
