AN ENCYCLOPADIA OF HORTICULTURE. 3 79 
Trichocentrum—continued. 
species thrive best in an intermediate temperature, in a 
moist, shady position, attached to blocks of soft wood or 
pieces of tree-fern stem. Water must be given all the 
year round, but care must be taken to prevent the roots 
being in contact with stagnant moisture. Propagation 
may be effected by division. 
T, Sibo pany (white-and-purple).*' f. large, freely pro- 
duced ; sepals and petals bright cinnamon-brown ig Py ii 
yellow inside; lip white, with two large, purple spots near the 
base, the disk veined with rosy-purple, passing to yellow, and 
having z crest of toni O pe keels. ei ee 
acute, shining green, 4in. in. long. Brazil, 1866. (B. M. $ 
G. C. 1866, 219; W. O. A. 204.) à f 
T. capistratum (haltered). fl. one to a peduncle; sepals and 
petals yellow; lip white, dotted and blotched with purple, re- 
markable for having its base extended into five short spurs. 
l. oblong-lanceolate, purplish. Costa Rica, 1871. 
T. cornucopiæ (cornucopia). A small plant, with yellowish- 
white flowers, having more botanical than horticultural interest. 
Rio Negro (?), 1866. (Ref. B. 77; R. X. O. 177.) 
T. fuscum (tuscous), /l. on short peduncles; sepals and petals 
purplish-green, spreading ; lip much longer than the petals, 
cuneate, waved, with a slender spur at base, two-lobed at apex, 
lower down blotched with rose-colour and tted with red. 
l. oblong, acute, spreading, somewhat twisted, ae 
minutely dotted. Mexico, 1841. (B. M. 3969; B. R. 1951.) 
T. f. Krameri (Kramer's). A large-flowered ger with a 
longer and thinner spur than in the type. Brazil, 1885. 
T. Hoe (Hoege’s). fl. very large, borne on a zigzag peduncle ; 
Bec etals greenish-yellow, with a purple middle area: 
lip white, with brilliant purple lines and blotches, and two blunt, 
yellow calli at the base, pandurate, undulated, notched at the 
tip ; spur with a clavate, notched apex. J. robust, horny, cuneate- 
oblong, acute. Mexico, 1882. A small but distinct plant. 
T. ionophthalmum (violet-eyed). f., upper sepal and petals 
very light yellowish-maroon-brown, with brown dots at top, un- 
guiculate, blunt; lateral sepals wholly brown; lip whitish, with 
a large, violet blotch on each basilar angle, pandurate. /. broader 
and shorter than those of T. albo-purpureum (which this plant 
resembles). Amazons, 1876. 
. maculatum (spotted). jf. large; petals white, spotted with 
purple, oblong, obtuse ; lip with a yellow crest, obovate, bilobed, 
very obtuse; spur very long. February. J. very thick, fleshy, 
linear-oblong, obtuse, spotted with red. Sierra Nevada, 1844. 
y i Paced ag ponies (straight-spurred).* fi. large; sepals and 
tals light cinnamon-brown, tipped with yellow, cuneate-oblong ; 
ip white, with a crimson-lake blotch on each side of the base, 
and five bars or semi-abortive keels of the same colour between 
the blotches, the disk in front of the crest being yellow; spur 
tapering to an acute point. October. Brazil. A curious and 
beautiful epiphyte. (W. O. A. 272.) 
T, Pfavii (Pfau’s).* fi. in pairs on a raceme, as large as those of 
T 
Oncidium Gardneri ; sepals and petals half brown, half white, | 
spathulate, obtuse; lip white, with a red blotch in the middle 
of its stalk, cuneate-flabellate, bilobed, crisped. Central 
America, 1881. (G. ©: m: s., xvii. 117; £ H. ser. iii. 587; 
R. G. 1103.) 
T, P. zonale (zonal). fl., sepals and petals entirely brown at 
their base, or the brown broken up into blotches, obtuse or 
acute; lip having one large, purple blotch or two darker ones 
before its base. 1883. An interesting and variable form. 
T. hyrio (porphyry-like). f. solitary, about 2in. in 
n Betari sepals and petals brown, unequally margined and 
tipped with yellow, cuneate-oblong, acute; lip rich magenta- 
purple, faintly margined with white towards the point and 
having a rectangular, sulphur-yellow blotch on the disk in front 
of the three purple lines of the crest. Z. cuneate-oblong. South 
America, . A very handsome species. (I. H. ser. iii. 508.) 
T, pulchrum (pretty). fl. yellow and white; sepals much 
spreading, oval-elliptic; lip erect, obovate, cuneate at base, 
emarginate at apex. July. l. two or three, thickened at base, 
oblong, obtuse or acute, sometimes mucronate. Peru. 
T, purpureum (purple). /., sepals and petals of a dull olive- 
green; lip purple, a hoveba ching: meg ong spur thick, 
curved ; scapes small, radical, one or two-flowered. Demerara. 
T, tenuiflorum (slender-fiowered). fl. dingy brown and white, 
small; sepals and petals narrow, the former acute, the latter 
obtuse; lip linear-obovate, with a pair of plates occupying the 
whole of the base. Bahia. Sc a 
T. tigrinum (tiger-striped).* fl. one or two to a peduncle ; sep: 
and petals Pas ari 2a transversely barred and distinctly 
spotted with purplish-brown; lip pure white, lłin. a 
an, across the dilated apex, with a yellow crest on the disk, 
and on each side at the base a wedge-shaped blotch of gas? 5 
l. oblong, more or less dotted with deep red. Ecuador, 
A remarkably handsome and desirable species, producing its 
blossoms while in a very small state. (I. H. ser. iii. 282.) 
T. t. splendens (splendid). A fine variety, having the base of 
the large, obcordate lip of a rich purple colour. ; 
TRICHOCEPHALUS. Included under Phylica 
(which see). 
TRICHOCEROS (from thriz, trichos, a hair, and 
keras, a horn; alluding to the two hairy, antenna-like 
processes from the column). ORD. Orchidew. A small 
genus (six or seven species, which may be reduced to 
three or four) of stove, epiphytal Orchids, natives of 
Peru and Columbia. Flowers loosely racemose at the 
apices of the peduncles, mediocre or small, rather long- 
pedicellate; sepals sub-equal, free, and spreading, larger 
than the petals; lip sessile at the base of the column, 
spreading; pollen masses four; bracts shorter than the 
pedicels. Leaves few, distichous, coriaceous or fleshy. 
T. parviflorus, the only species yet introduced, thrives in 
small pans or baskets of peat and sphagnum. 
T. parvifi small-flowe 
and ieowe abe aoe peepee SS seus wee 
ciliolate ; ped e i pany terete, axillary. Pseudo- 
bulbs small, bearing a single, fleshy leaf. Columbia, 1870. 
TRICHODESMA (from thriæ, trichos, a hair, and 
desmos, a bond; the anthers are bound to each other by 
hairs). Syns. Borraginoides, Friedrichsthalia, Leiocarya, 
Pollichia, Spiroconus, Streblanthera. Orv. Boraginee. 
A genus comprising nine or ten species of coarse, hardy 
or half-hardy herbs, inhabiting Africa, tropical and Central 
Asia, and Australia. Flowers in terminal racemes; calyx 
deeply five-cleft; corolla of five often long-acuminate 
lobes; stamens five; anthers connivent by means of 
hairs. Leaves opposite or alternate, entire. T.zeylanicum, 
the only species known to cultivation, is a coarse, hardy 
annual, thriving under ordinary treatment. 
T. zeylanicum (Cingalese). Ceylon Borage. 
simple racemes; calyx segments jin. to din. long; corolla lobes 
broad, longer than the calyx. l. linear to oblong-lanceolate 
often Jin. to 4in, long, the margins usually recurved. h. several 
fl. pale blue, in 
feet. Southern India, Ceylon, Mascarene Islands, and Australia. 
(B. M. 4820.) 
TRICHODIUM. This genus is now included under 
Agrostis. 
TRICHOGLOTTIS (from thrix, trichos, hair, and 
glottis, a tongue; alluding to the fine hairs on the 
labellum). Orp. Orchidew. A small genus (four or five 
species) of inconspicuous, stove Orchids, mostly natives of 
the Malayan Archipelago. Flowers small or mediocre, — 
one or a few on very short, lateral peduncles; sepals 
spreading, the lateral ones very broad, adnate to the 
foot of the column, the dorsal one and petals oblong; 
lateral lobes of lip short, erect, the middle one rather 
broad; column short, wingless. Leaves  distichous, 
scattered at the sides of the stem, narrow. Stem leafy, 
elongated, not pseudo-bulbous. The species mentioned 
below thrive in small pans of peat and sphagnum, in the 
East India house, and require an abundant supply of 
moisture when growing. 
T, cochlearis (spoon-like). f/i. white, with purple bars on both 
sides of the sepals and petals, smaller than those of Saccolabium 
violaceum ; spur conical; lip spoon-like, very thick, with a few 
urple blotches ; inflorescence very short, , four-flowered. 
p like those of Sarcanthus rostratus, but thicker, and with a 
uite unequal point on one side prone much farther than 
the other one. A. 8in. Sumatra, Š 
, fasciata (banded).* fi., sepals and petals cuneate-oblong 
gen the lateral sepals falcate ; sepals closely cross-ban 
with pale chestnut-brown ; lip whitish, with yellow tips to the 
side plates of the anterior tand a few purplish spots on the 
keel of the under side. J. distichous, oblong, bilobed. Eastern 
tropical Asia, 1872. (W. O. A. 208.) 
TRICHOLZANA. Included under Panicum. 
TRICHOMANES (the old Greek name used by 
Theophrastus, from thrix, trichos, a hair, and manos, soft ; 
alluding to the delicate nature of the fronds). Bristle 
Fern. Including Feea, Hymenostachys, Involucraria, 
Lacostea, Lecanium, Microgonium, Phlebiophyllwm. ORD. 
Filices. A genus comprising about 100 species of mostly 
stove Ferns, inhabiting tropical and temperate climates. 
Fronds varying from simple to decompound-multifid, 
