428 MONOECIA TRIANDRIA. 



MONOECIA. 



MONANDRIA 

 specie^. 365. CAULINIA. 



C. Jlexilis . leaves verticillate by sixes, linear, denticulate at the extrem- 

 ity, spreading. 



HAB. Flowing water. Aug. Sept. 1\. ; stem submerg., branch. ; 

 fl. axill. sess. 



C. fragilis: leaves by threes, or opposite, linear-subulate, recurved, 

 with aculeate dentures, rigid. 



HAB. Ditches, &c. Aug. Stem long, brittle, submer. 



366. EUPHORBIA. Spurge. 



E. hypericifolia : smooth, branched, erect-spreading ; branches divari- 

 cate ; leaves opposite, serrate, oval-oblong, subfalcate, on very short 

 petioles ; corymbs terminal and axillary. 



HAB. Fields and dry soils. July Aug. <v> ; very smooth, 12 18 

 in. high ; leaves spot, 



E. maculata : stem procumbent ; spreading flat on the ground, much 

 branched, hairy ; leaves opposite, oval or oblong, serrulate, oblique at 

 the base, on short petioles, smooth above, hairy and pale beneath , 

 flowers solitary, axillary, much shorter than the leaves. 



HAB. Sandy fields. July Oct. <v> ; stem 612 in. long ; flowers 

 appearing fascic. 



E. poly goni folia : procumbent, divaricate, very smooth, succulent ; leaves 

 oblong and linear-lanceolate, entire, obtuse at the base, sometimes sub- 

 cordate ; flowers solitary in the forks of the stem ; stipules simple. 



HAB. Sea-shore. June July, 7J. ; stem 8 in. long ; stip. subul. ; Jl. 

 minute. 



E. dentata : hairy ; leaves opposite, oval, dentate ; flowers crowded at 

 the summit of the stem. 



HAB. Shady rocks. July Aug. <D ; upper leaves spotted. 



TRIANDRIA. 

 367. TYPHA. Reed mace. 



T. latifolia : leaves linear ; sterile and fertile spikes approximate on 



the same rachis, both cylindrical. 

 HAB. Water. June July, 7|.; culm 2 feet high; spikes dense-, 



leaves 1 inch broad. 



368. SPARGANIUM. Burr reed. 



S. ramosum : leaves triangular at the base, their sides concave ; com 

 mon flower -stalk branched ; stigma linear. 



