656 TRA CHYSTEMON 



Trachystemon D. Don. Boraginaceae (iv. 3). 2 Medit. 



Trachystigma C. B. Clarke (Didymocarpus p.p. EP.). Gesneriaceae 

 (i). i trop. Afr. 



Tracyanthus Small (Zygademts p.p.)- Liliaceae (8). i N. Am. 



Tradescantella Small (Tradescantia p.p.). Commelin. 2 N. Am. 



Tradescantia Rupp. ex L. Commelinaceae. 35 trop. and N. Am. 

 T. virginiana L. (spider-wort), &c. Cult. orn. fl. 6 perfect sta. covered 

 with hairs. Protandr. Infl. a cincinnus. 



Tragacanth, Astragalus, esp. gummifer Labill. 



Tragacantha Tourn. ex L. = Astragalus Tourn. (Legum.). 



Traganthes Wallr. (Eupatornnn p.p.). Compositae (2). 5 N. Am. 



Traganum Delile. Chenopodiaceae (B). i Meclit. 



Tragia Plum, ex L. Euphorbiaceae (A. n. 2). 55 trop., subtrop. 



Tragium Sprang. = Pimpinella Riv. p.p. (Umbell.). 



Tragoceros H. B. et K. Compositae (5). 4 Mexico. The C of ? fl. 

 becomes rigid aftei fert., and forms a double hook upon the fr. 



Tragopogon (Tourn.) L. Compositae (13). 35 N. temp. |* (T. pra- 

 tensis L., goat's beard, in Brit.). The fl. -heads of the Brit. sp. close 

 at midday, whence its name of ' John-go-to-bed-at-noon.' T. porri- 

 foluis L. (salsify) sometimes grown as a vegetable. 



Tragopyrum Bieb. = Atraphaxis L. (Polypod.). 



Tragoselinum Tourn. ex Hall. = Pimpinella Riv. p.p. (Umb.). 



Tragus Hall. Gramineae (3). 2 trop. and subtrop. 



Trailing arbutus, Epigaea repens L. ; - azalea, Loisdetiria. 



Trailliaedoxa W. W. Smith et Forrest. Rubi. (inc. sed.). i W. China. 



Tralliana Lour. Inc. sed. i Cochinchina. 



Translator, Asclepiadaceac. 



Transpiration, evaporation of water from plant. 



Trap flowers, fls. which entrap visitors, allowing them to escape 

 by another road, or at another time, past the essential organs, Aristo- 

 lochia. Arum, Asannn, Ceropegia, Coryanthes, Cypnpedium, Mag- 

 nolia. 



Trapa L. Onagraceae (i), sometimes in a special fam. Hydrocaryaceae. 

 3 \$fc (horn-nut), incl. 7'. natans L. Water pi. with floating 1. and 

 submerged adv. roots which contain chlorophyll and assimilate. Fl. 

 5 , 4-merous, perig., with a disc, above the sta. G 2-loc. , with one 

 anatr. pend. ov. in each; raphe ventral. Seed large, exalbum. , in a 

 horned nut; used as food in China, &c. 



Trapella Oliv. Pedaliaceae. 2 China, Japan. 



Trapeziform, of unsymmetrical 4-sided shape. 



Trasus S. F. Gray = Carex Dill. p.p. (Cyper.). 



Trattinickia Willd. Burseraceae. i trop. S. Am. 



Traunia K. Schum. Asclepiadaceae (n. 3). i Kilimandjaro. 



Trautvetteria Fisch. et Mey. Ranunculaceae (3). i Japan, N. Am. 



Traveller's joy, Clematis; -tree, Ravenala. 



Treacle mustard, Erysimum. 



Tread softly (A.m.),Jatropha. 



Trechonaetes Miers. Solanaceae (2). i Chili. 



Treculia Decne. ex Tree. Moraceae (n). 6 W. trop. Afr. The seeds 



of T. africana Decne. (okvva) are ground into meal. 

 Tree, a woody plant usu. with only one =.tem at base, and > 30 feet high ; 



