AN ENCYCLOPADIA 
OF HORTICULTURE. 
Trisetum—continued. 
ovate or oblong, sometimes lax and effuse.. Leaves flat. 
T. flavescens, the British representative of the genus, is 
particularly useful for agricultural purposes, and forms a 
portion of all productive meadows. None of the species 
possess any horticultural interest. 
TRISMERIA. Included under Gymnogramme. 
_ TRISTAGMA (from treis, three, and stagma,a drop; 
in reference to the three honey-glands). Syns. Stemma- 
tium, Stephania (of Willdenow), Stephanolirion. ORD. 
Liliaceœ. A genus comprising only three species of 
greenhouse, bulbous plants, natives of Chili. Flowers not 
numerous, in terminal umbels, pedicellate; perianth 
salver-shaped, with a cylindrical tube, and six sub-equal, 
spreading lobes; corona of three to six sub-connate or 
free scales, or wholly deficient; stamens six; involucral 
bracts two; scape simple, leafless. Leaves radical, few, 
narrow-linear. Corm sub-globose, tunicated. T. narcis- 
soide, the only species introduced, is a pretty and in- 
teresting plant, somewhat resembling a Narcissus. It 
thrives in a compost of rich, sandy loam, and does not 
require much water. Propagation may be effected by 
seeds, or by offsets. 
o soide (Narcissus-like). fl., perianth tube dirty white, 
‘scarcely żin. long, with six green bands; segments pure white on 
the face, with a slender, two-nerved, greenish keel; corona 
bright orange, erect; umbel five or six-flowered ; ae S slender, 
terete, purple, above lft. long. September. Zl. about four, 
erect, bin. high, narrow-linear, glabrous, acuminate. Bulb 
globose, less than lin. thick, with several brown, membranous 
tunics. 1875. Syns. Stemmatium narcissoides, Stephanolirion 
narcissoides. 
TRISTANIA (named in honour of Jules M. C. Tristan, 
1776-1861, a French botanist). ORD. Myrtacee. This 
genus embraces about a dozen species of stove or green- 
house trees or tall shrubs: four inhabit the Indian 
Archipelago, two are natives of New Caledonia, and the 
rest are Australian. Flowers yellow or white, often 
rather small, disposed in axillary, pedunculate cymes; 
calyx five-parted; petals five, spreading; .stamens in- 
definite. Leaves alternate, or approximate at the tips 
of the branches, somewhat whorled, rarely opposite. 
The following species are known to cultivation. They 
are very pretty, greenhouse, Australian plants, thriving 
in a compost of loam, peat, and sand. MHalf-ripened cut- 
tings will root freely in sand, under a glass. 
T., conferta (clustered). Australian Turpentine-tree. fi. yellow, 
in cymes of three to seven, usually on the young wood below 
the cluster of leaves; peduncle jin. to šin. long, or rarely 
elongated. July to September. l alternate, crowded at the 
ends of the branches so as to appear whorled, ovate-lanceolate, 
acuminate or rarely almost obtuse, 3in. to 6in. tony, 1805. 
tall tree. (R. G. 1188.) SYN. T. macrophylla (B. R. 1839). 
T. depressa (flattened). A synonym of T. suaveolens, 
T. macrophylla (large-leaved). A synonym of T. conferta. 
T, neriifolia (Oleander-leaved) Water Gum-tree. fi. yellow, 
in opposite, axillary cymes, but forming usually a terminal 
corymb, the central shoots not growing out till after flowering. 
June to September. l. opposite, lanceolate, acute, narrowed 
into a short peor lšin. to 3in. long, nerveless except the 
prominent midrib, . A tall, slender shrub, or small tree, 
(L. B. C. 157.) Syns. Melaleuca neriifolia (B. M. 1058), M. salici- 
Jolia (A. B. R. 485). ; 
T, suaveolens (sweet-scented). fl. yellow, usually small, in 
axillary cymes ; common peduncles łin. to żin. long, more or less 
flattened. August. J, alternate, petiolate, ovate-elliptic, ovate- 
lanceolate, or elliptic-oblong, obtuse or acuminate, more or less 
distinctly penniveined and reticulated, l}in. to 6in. long. 1820. 
Shrub or tree. Syn. 7. depressa. 
TRISTICHOUS. In three rows or ranks. 
TRITELEIA (from treis, three, and teleios, com- 
plete; alluding to the perfect ternary arrangements of 
the parts of the flower). Triplet Lily. Orp. Liliacee. 
A genus consisting of about nine species of half-hardy, 
American, bulbous plants, 
Hooker, under Brodiva. Stamens affixed in the tube or 
throat, biseriate; filaments filiform, all bearing anthers. 
The species best-known to gardeners are. here described ; 
now included, by Bentham and 
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Triteleia—continued. ; 
they are often confused with Milla. All thrive in a 
rich, well-drained soil, in sunny positions. Propagated 
by offsets, and by seeds. T. uniflora is now and then 
planted amongst short grass; but, although very pretty 
‘for a season or two, it does not permanently hold its 
own under such conditions. It forms a good bulbous 
plant for pots, flowering profusely in early spring. The 
flowers open in bright, and remain nearly or quite closed 
in dull, weather. 
T., aurea (golden). /l., perianth yellow, five to six lines long, the 
segments green-striped, oblong-spathulate, slightly sprcecing 
spathe valves two, connate at base ; umbels two to six flower 4 
weeps one to three, erect, 2in. to 4in. long. Fr l. six to 
eight, filiform, din. to 4in, long. Bulb whitish, tunicated. Monte 
Video, 1838. (Ref. B. 42.) 
T. conspicua (conspicuous). A variety of 7, uniflora. 
T. laxa (loose).* Ithuriel’s Spear. f., perianth blue, funnel- 
shaped, lin. to L4in. long, the ents lanceolate, acute, erecto- 
patent ; spathe valves many; um eight to twenty-flowered ; 
scapes fragile, erect, lft. to 1}ft. high. July. Z. nearly flat, lft. 
to 14ft. long, two to four lines broad. Bulb globose, jin. to jin. 
thick. California, 1832. (B. R. 1685.) 
T. Leichtlinii (Leichtlin’s). 4. slightly fragrant ; perianth 1}in. 
to 1fin. long, the tube greenish, cylindrical, twice as long as the 
oblong, spreading segments, which are pure white on the face, 
but marked with a distinct, green keel down the back ; umbels 
two or three,.each one to three-flowered. January. J. about six 
to a cluster, overtopping the flowers, erect, rapis obtuse, din. 
to un. long. Chilian Andes, 1873. SYN. Milla Leichtlinii (B. M. 
T. porrifolia (Leek-leaved).* fl., perianth whitish-violet, funnel- 
shaped, nine to ten lines long, the segments la late-spathulate, 
nearly thrice the length of the tube; spathe valves two, connate 
at base ; umbels four to six-flowered ; scape oe the leaves. 
July. l. four or five, 6in. to 8in. long, one to two lines broad. 
Bulb ovoid, eight to twelve lines thick. Chili, 1868. Syn. Milla 
porrifolia (B. M. 5977; G. C. 1868, p. 990.) 
Fic. 106. TRITELEIA UNIFLORA. 
>, ong gh ac ol Spring Starfiower. P els 
lilac, Zin. to ljin. long, the segmen anal 
ue ara er te lin. to 2in. long; spathe valves 
