T R E 



T R I 



Female, Calyx of three leaves. Corolla none. Style one. 

 Stigmas feveral, feathery. Capfule of three cells, and fix 

 valves. Seeds folitary. 



Obf. We believe the feveral genera, cited above, are here 

 very properly united ; fee Mallotus and Tetragastbis. 

 The natural number in every part of the female fruftification 

 is probably three, though varying to four in the original 

 fpecies. Linnxus was but ill acquainted vrith this genus, 

 nor does it appear that he ever examined a fpecimen. 



1. H . nudiflora. Smooth-leaved Trevpia. Linn. Sp. PI. 

 1 66 1. Willd. n. 1. Ait. n. I. ' ( Rottlera indica ; Willd. 

 as above t. 3. Canfchi ; Rheede Hort. Malab. v. i. 76. 

 t. 42.)-— Leaves ovate, undivided, entire, fmooth on both 

 fides. — Native of the Eaft Indies, in fandy ground. It has 

 been introduced into the ftoves at Kew, but has never yet 

 flowered. This is a tall tree, whofe trunk is two or three 

 feet in diameter ; its branches numerous, round, fmooth, 

 with a filamentous bark. Leaves alternate, on long fmooth 

 ftalks, broadly ovate, taper-pointed, three or four inches long, 

 with three principal nerves, and many fmaller ones, connefted 

 by fine tranfverfe parallel veins, and numerous minute reti- 

 culations. Mah Jlo-wers i.umerous, in axillary aggregate 

 clufters, three or four inches long, greenifti-white ; fome- 

 times, according to Rheede, four-cleft. Calyx externally 

 downy, about two lines long. Female Jloiuers on a feparate 

 tree, likewi<e axillary, but rarely more than two together, 

 on a Icng ftalk. Their calyx is either very fmall, or foon 

 deciduous. Germen not fo large as a pepper-corn, hoary. 

 Style about as long as the gennen, thick, hoary. Stigmas 

 three or four, fpreading, an inch long, denfely covered along 

 their upper fide with feathery glands. Capfule rather de- 

 preffed, flightly lobed, fmootlufh, of three or four cells. 



2. m. tricufpidata. Three-pointed Trewia. Willd. n. 2. 

 (Mallotus cochinchinenfis ; Loureir. Cochinch. 635.) — 

 Leaves ovate, dovrny and toothed ; generally three-pointed. 

 — For the hiftory of this fpecies we refer the reader to 

 Mallotus. 



3. T. pubefcens. Downy Trewia. — Leaves ovate, undi- 

 vided, entire, downy on both fides. Female flowers fome- 

 what capitate, with ovate pointed brafteas. — A female fpe- 

 cimen of this was fent us by the late Dr. Roxburgh, as an 

 unknown tree from Amboyna. The (hape and reticulations 

 of the leaves, with the general habit of the plant, are fo like 

 the firll fpecies, that we feel confident of their being of the 

 fame genus. The branches and footJlaHs however, and the 

 under fide of the leaves, are denfely clothed with foft velvet- 

 like pubefcence ; the upper fide of the latter is lefs downy. 

 Near the bafe of ezch footjlali is a pair of awl-fhaped, very 

 downy, decidaoas Jlipulas. Female Jloiuers on fimple, ax- 

 illary, folitary, downy ftalks, rather longer than the foot- 

 ftalks, compofing fmall roundifli heads, accompanied by four 

 or five fomevvhat alternate, ovate, pointed, flightly toothed, 

 downy braSeas, an inch long. Y.'S.ch Jlo'wer appears to have 

 a (hort partial ftalk, which is very hairy, and the germen is 

 no lefs briftly ; infomuch that we can but imperfeftly deve- 

 lope the ftrufture of the flower. T\\e Jligmas however are 

 large and confpicuous, exactly thofe of a Treivia ; but there 

 is fome appearance of their being folitary. PofTibly fome 

 may have fallen off. We are unacquainted with the male of 

 this fpecies. 



4. T. Jifcolor. White-leaved Trewia. — Leaves ovate, 

 entire ; denfely downy and white beneath — Communicated 

 by Lamarck to the younger Linnsus, along with feveral 

 other plants from the Eaft Indies, but without any name, or 

 indication of its native country. We prefume it to be the 

 male of a nondefcript ipecics of Trewia. The form and 

 veins of the ka-ues ftrongly indicate this ; but their under 



fide differs from that of the reft, in being covered with the 

 fineft deprefled, mealy or fcaly, fnow-white pubefcence ; 

 while the upper is very fmooth to the touch, appearing 

 minutely granulated under a magnifier only. The branches 

 and all the Jlalis are finely hoary, and, in the dried fpecimen 

 at leaft, have a rufty hue. Panicle terminal, compofed of 

 numerous, alternate, racemofe, many-flowered branches. 

 Unexpanded male jloiuers about the fize of a muftaid- 

 feed, downy, on ftiort partial ftalks. — It is evident we can 

 have no certainty at prefent of the genus of this plant, but 

 there is the greateft probability of its being rightly placed 

 here. 



TREYA, in Geography, a town of Denmark, in the 

 duchy of Slefwick ; 9 miles W. of Slefwick, 



TREYSA, a town of Weftphdlia, in the principality of 

 Helfe. In the year 1646, this town was burned down by the 

 Imperialifts ; 26 miles S. of Caffel. N. lat. 50°54'. E. 

 long. 9° lo'. 



TRIA Prima, among Chemifts, the three hypoftatical 

 principles, viz. fait, fulphur, and mercury ; of which they 

 hold all bodies to be primarily made, and into which they are 

 all held refolvable by fire. 



TRIAD, Trias, TfMc, See Ternary, Trias, and 

 Trinity. 



TRIADICA, ia Botany, from rpia ■, Tfix^o,-, ternary, si' 

 luding to the prevalence of the number three in the fruftifica- 

 tion ; which however is not very remarkable. — Loureir. 

 Cochinch. 610. — Clafs and order, Dioecia Diandria. Nat. 

 Ord. Amentacee, Linn. Jufl^. 



Gen. Ch. Male, Cal. Catkin elongated, thread-fhaped, 

 naked, feparated into many-flowered tubercles. Perianth 

 minute, bell-ftiaped, three-cleft. Cor. none. Stam. Fila- 

 ments two, flat, very fiiort ; anthers flattifli, of two lobes, 

 which burft laterally. 



Female, on a feparate plant, Cal. Catkin and Perianth as 

 in the male. Cor. none. P'Jl. Germen fuperior, roundifli ; 

 ftyle ftiort and thick ; ftigmas three, oblong, ereft. Peric, 

 Berry roundifh, dry, three-lobed, three-celled. Seeds foli- 

 tary, roundifli. 



Eft". Ch. Male, Calyx three-cleft. Corolla none. 



Female, Calyx three-cleft. Corolla none. Stigmas three. 

 Berry fuperior, of three cells. Seeds folitary. 



1. T. cochinchinenfis. Cay Soi tiii, or Cay Cha dam, of the 

 Cochinchinefc. — Leaves ovate, obtufe. — Found in the woods 

 of Cocliinchina. A large tree, with fpreading branches. 

 Leaves alternate, ovate, entire, fmooth, on long red foot- 



Jialhs. Flowers nearly terminal. Berries fmall, of a brown- 

 ifti green. 



2. T. fmenfis. U Khau mo of the Chinefe Leaves 



roundifli, pointed. — Wild about Canton in China. A large 

 tree, with fpreading branches. Leaves alternate, ftalked, 

 fmooth, entire. Calyx, of the male as well as female flowers, 

 four-cleft. Se:ds tunicatcd. Of this laft circumftance no- 

 thing is faid in the genenc charafter. — We are not acquainted 

 with any plants anfvvering to the above defcription. An- 

 TiDESMA perhaps (fee that article and Stilago) comes 

 the neareft, efpeciaily when we contemplate the Stilago di- 

 andra of Roxburgh. If allowance be made for fome occa- 

 fional abortion in the cells of the fruit, or if we ourfelves 

 haveniifconceived Loureiro's ambiguous defcription, " hacca 

 irilocularis, monofpenna," Triadlca may be no other than 

 Antidefma. 



TRIjENA, Tjixivx, a trident, alluding to the very pecB- 

 liar three-pointed awn. — Kunth Nov. Gen. et Sp. Plant. 

 V. I. 178. — Clafs and order, TVv'an^WiZ Z)/gyn/a. Nat. Ord. 



Oramina. 

 Gen. Ch. 



Cid. a glume of two unequal, lanceolate, 



keeled, 



