TREVORIA 



TRICHOCEXTRUM 



3373 



petioled: spike pendulous, few-fld., common!}' 3: fls. 

 fleshy, greenish; dorsal sepals, oblong-lanceolate, 

 acuminate, revolute, lateral ovate, obliquely acuminate; 

 petals ligulate-falcate, cuspidate; lip with the lateral 

 lobes axe-shaped and the midlobe linear-hastate. 

 Colombia. G.C. IU. 21, suppl. May 29. 



Lehmannii, Rolfe. Pseudobulbs fascicled, cylindri- 

 cal or elongate-pyrifonn, 1-lvd., not ribbed, covered 

 by brown lanceolate sheaths below the middle: Ifts. 

 subsessile, oblong-lanceolate, ph'cate: spike pendulous, 

 few-fld., rachis stout: fls. up to 2J- in. across, green; 

 sepals broad-ovate, subacute, concave, fleshy; petals 

 much narrower than the sepals, oblong-lanceolate, 

 spreading-recurved, paler; lip fleshy, lateral lobes ear- 

 shaped, erect, midlobe 5-grooved, stipitate, swollen, 

 2-callused. Colombia. B.M. 7805 (as T. Chloris'). 



F. TRACY HCBBARD. 



TREWIA (from C. J. Trew, a German physician, 

 1395-1769). Also spelled Trevia. Euphorbiaceje. Small 

 tropical softwood trees rarely cult, in greenhouses, 

 but little known to gardeners and apparently not in 

 the American trade: branching from the base: Ivs. 

 opposite, entire, 3-5-nerved: fls. dioecious, in lateral 

 racemes or the pistillate singly, apetalous; stamens 

 simple, 50 or more; styles free above the base. About 

 5 species, mostly in Trop. Asia. Related to Mallotus. 

 T. nudiflbra, Linn., with broadly ovate, acute or 

 acuminate, cordate to subcuneate Ivs., has been in cult, 

 in Eu. from S. Asia. It is prop, by cuttings in sand. 



J. B. S. NORTON. 



TR1ANEA: Limnobium. 

 TRDBROMA: Theobroma, p, 333L 



TRICALYSIA (Greek, triple calyx; true of some spe- 

 . Including Kraussia. Rubidcex. Erect or climb- 

 ing shrubs, used as ornamentals in extreme South. 



Branches opposite, terete or obtusely quadrangular: 

 Ivs. opposite, short-pet ioled; stipules short, broad, 

 apiculate and intra-petiolar: fls. rather small, subsessile, 

 shortly pedicelled, axillary; calyx-tube turbinate or 

 campanulate, 4-6-lobed or shortly dentate; corolla 

 funnel-shaped or shortly salver-shaped, lobes 4-8, oval, 

 ovate, or lanceolate; stamens 4-8; disk annular, fleshy, 

 glabrous; ovary 2- rarely 3-celled: fr. pisiform, berry- 

 like, leathery, 1-2-celled, few-seeded. About 65 species, 

 Trop. and S. Afr., Madagascar; two intro. in Flk. and 

 S.Calif. 



A. Lvs. lanceolate, acuminate. 



lanceolate, Hiern (Kraussia lanceolata, Sond.). 

 Shrub: Ivs. lanceolate, acuminate: cymes many-fld.: 

 calyx 5-toothed; throat of corolla densely bearded; 

 stigma deeply 2-lobed, lobes revolute: fr. globose, the 

 size of a pea. Natal. 



AA. Lrs. elliptic, obtu-se. 



Sonderiana, Hiern (Kraussia coriacea, Sond.). 

 Shrub: Ivs. elliptical, obtuse or minutely apiculate, 

 wedge-shaped at the base, coriaceous, IJ^SJ-i in. long: 

 cymes about 4-fld.: fls. pentamerous; pedicels J^-j^in. 

 long; throat densely bearded; stigmas deeply 2-lobed, 

 lobes revolute. Natal. 



T. Kraussi-ana, Schinz (Coffea Kraussiana, Hochst. Kraussia 

 flonbunda, Harv. ). Shrub with reddish brown branches: Ivs. ovate- 

 oblong or lanceolate-subacute: cymes axillary, paniculate: corolla 



F. TRACY HuBBARD.f 



TRICHILIA (Greek, by threes; the fls. are trimerous). 

 Meliace^e. Trees or shrubs, suitable for the warmhouse 

 or outdoors in the extreme S. as ornamentals. Lvs. with 

 3 Ifts. or uneven-pinnate; Ifts. opposite or alternate, usu- 

 ally many-paired, rarely 2-paired: panicles many-fld., 

 axillary: fls. large for the order; calj-x short, 4-5-toothed 

 or cleft; petals 4-5, erect or spreading; staminal tube 

 8-10-cleft or -parted; disk annular, free; ovary sunken 

 in the disk, 2-3-celled: caps subglobose, leathery, 2-3- 

 celled. About 120 species, Trop. Amer. and Trop. Afr. 



spondioides, Jacq. Tree, 15-20 ft. high: Ivs. pin- 

 nately compound; Ifts. 7-10-paired, ovate-oblong, 

 oblique and round at base, glabrous: panicles puberu- 

 lent, divisions 3-11-fld.: fls. greenish yellow; staminal 

 tube cohering one-third its length, anthers 10, hairy: 

 caps, tomentose, rugulose, 5-6 lines diam. Trop. Amer. 

 and intro. into S. Fla. 



T. undulatifdlia, Hort., is offered in the foreign trade. 



F. TRACY HUBBARD. 



TRICHmiUM (Greek, hairy, alluding either to the 

 plant in general or to the fl.-heads). Amarantac?&. 

 Herbs, subshrubs or rarely shrubs glabrous or pubes- 

 cent, adapted to greenhouse cult.: Ivs. alternate, nar- 

 row, rarely obovate or spatulate, entire: fls. in dense 

 spikes or globose or oblong heads, white, straw-colored 

 or rose, hermaphrodite; perianth narrow or elongate, 

 5-parted, segms. equal, linear, rigid, usually plumose; 

 stamens 5; ovary sessile or stipitate, glabrous or lanu- 

 ginous, ovule 1: fr. an indehiscent utricle. About 60 

 species, natives of Austral. 



exaltatum, Benth. (Ptildtus exaMtus, Nees). A ten- 

 der perennial, 23 ft. high, erect, usually branching 

 above: lower Ivs. 2-5 in. long, oblong-lanceolate, rather 

 thick, contracted into a long petiole; upper Ivs. smaller: 

 spikes erect, long-peduncled, at first ovoid-conical, 

 becoming longer: perianth %in. or less long, yellowish, 

 with dull red tips. B.R. 25:28 (as T. alopecuroideum). 

 Intro, in this country as a greenhouse subject. 



T. Mdnglesii, LindL, is perhaps the choicest species. It has violet- 

 purple fls. in large pyramidal heads 3 in. long and 2 in. wide at base. 

 It could probably be grown as a summer annual. B.M. 5448. F.S. 

 23:2396. R.H. 1866:291. F. 1864:217. I.H. 13:464. G.C. 1864: 

 655;IIL32:18L G. 25:20. Gn. 68, p. 225. 



F. W. BARCLAY. 



TRICHLORIS (Greek, for three, and Chloris, a genus 

 of grasses, referring to the 3 awns which differentiate 

 the two genera). Grarmneae. Perennial grasses that 

 resemble Chloris but differ in having 3-awned lemmas. 

 Species 5, Mex. and S. S. Amer. 



mendocina, Kurtz. (T. Blancho.rdid.na, Hack.). 

 Spikes several, erect, slender, approximate at top of the 

 culms, feathery with the delicate awns. Argentina. 

 An ornamental grass, readily grown from seed. 



A. S. HITCHCOCK. 



TRICHOCAULON (Greek, hair and stem; said to 

 allude to the bristles that tip each tubercle on the st.). 

 Asdepiadacex. Perennial herbs, suitable probably for 

 the warmhouse. Sts. low, thick, fleshy, many-angled, 

 angles tuberculate; tubercles aculeate: fls. small, 

 between the angles, usually solitary, very short-pedi- 

 celled; calyx 5-parted, segms. acute; corolla disk- 

 shaped, deeply 5-cleft, lobes broadly ovate; disk double, 

 short-stipitate, outer deeply 5-lobed, inner 5 ligulate 

 lobes. About 15 species, Trop. and S. Afr. T. pictum, 

 N. E. Br. St. subglobose or cylindrical, oblong, very 

 obtuse, 2-3 by about 2 in., irregularly tessellate-tuber- 

 culate, glabrous: fls. fascicled, erectj fascicles 2-4-fld.; 

 sepals broad ovate ; corolla not J^in. diam., white marked 

 with purple spots and numerous short lines, lobes broad 

 deltoid-ovate, acute. S. Afr. B.M. 8579. T. Pillausii, 

 N. E. Br. Plant 5-9 in. high, branching at base: sts. 

 1 34-2 J in. diam., cylindrical, with many tuberculate 

 angles, glaucous-green, glabrous, tubercles ending in 

 stiff bristles: fls. in small clusters, between the angles, 

 toward the top of the sts.; sepals ovate, very acumi- 

 nate; corolla bright creamy yellow, glabrous and smooth 

 outside, densely papillate on the inner face of lobes. S. 

 Afr. Var. major, N. E. Br. Plant and fls. larger than 

 the type. S. Afr. p TRACY HUBBARD. 



TRICHOCENTRUM (Greek, hair and spur, allud- 

 ing to the long slender spur). Orchidacex . A small 

 group allied to Rodriguezia (Burlingtonia) ; the plants 

 grow in dense matted tufts. 



Pseudobulbs very small, each bearing a broad fleshy 



