MONOECIA. TETRANDHIxV. 207 



738. PACHYSANDRA. Mchanx, 



Calix about 4-leaved. Corolla none. Fila- 

 ments subrlavate. Styles 3. Capsules 3-horned, 

 3-celIed; cells 2-seccU'(l. 



Root creeping-; stem very low and simple; leaves alter- 

 nate, pubescent, without st-puie:; spikes nearly radical, 

 the lower part feminine; fiiAVt-rs bracieute. 



Species. V. procnmbens The only species of the ge- 

 nus indigenous to the Alleghany niouiitains. Scarcely dis- 

 tinct from Tricera. 



-39. D I OTIS. Schreber, 



Masc. Calix 4-leaved, Corolla none. Fem. 

 calix 1 -leaved, 2-lioi'ned. Style biparted. See^ 

 \, villous, covered by the 2-liorned calix. 



SufFrulicose, leaves alternate, entire; flowers axillary. 



Species. 1. D. hmata. Ph. Obs. Stem suffruticose^ 

 12 to 18 inclies hif^h, par.ly erect and !anu£^inous; leaves 

 crowded, linear-sublnnceoiaie, at first revolute on the 

 jDargin, canescendy laimgiuous; fiowers conglomerated, 

 glomeruli axillary, masculine flowers superior. Hab. 0.\ 

 the ban'ks of the xVIis-,our;, in arid situations near the 

 "Grand Detour." Flowering in June. 



Of this genus there is a secotul species- Irvdigenoas to 

 Tartary and Arabia. 



r40. BCEHMERIA. WUld. 



Mas. CaZia?4-parted. Corolla uone^ Mciaru 

 none. Fem^ Calix and corolla nonCo Seed 1^. 

 compressed.. 



Shrubby or herbaceous; leaves opposite oi* alternate,, 

 often oblique; fiowers capitate. Nearly allied to Urtica, 



Speciis. 1. B. cylindrica. 2. latenfiora. 



A genus of 21 species, principally indigenous to tropi- 

 c-al America and India. 



741. URTICA. L. (Nettle.) 



Masc. Cato 4-leaved, CWo^^a none, JV^c- 

 tury central, mostly cyathiforin, Fem» Caitoo 

 .^'Valved. Corolla none, Sctd 1, shininero. 



