PONTEDEREiE. 251 



linear, long, coriaceous, scabrous along the niaagins. Plovers in racemose 

 panicles, small. 



White. % April— May. Sand hills. Middle Car. & Ga. 



Gvivs V VERATRUM. 



Perianth G-parteii, cxpandinir (lie sc«j;mcnts sessile, without 

 glum'.s. Stiinu'tis 0, inserted on the rccepticle. ^V^e 3, 

 short. Ciipsu/t^ oblong, 2-vaivecl, many seeded. 



1 V ViRiDE. Stem erect. Leaves large, sheathing at the hase, plaited, 

 oval. Flowers in paniculate racemes. Bracts of the branches oblong-lance- 

 olate, partial one." longer than the sub-pubescent peduncles. Segments of the 

 perianth obl<»ng-oval, acute. 



Greenish yellow. Ij. July .Mountains. 3-6 ft. 



2 V Parviflorcm. i>aiy*5 oval-lanceolate, flat, Habrous. FZotoer* in slen- 

 der, expanding panicles. Segments of the perianth acute at each end, bear- 

 ing the stamens. 



Green. % July. Mountains. 2-3 ft. 



3 V AxGL'STi FOLIUM. F/ofrer« dioEcious, in simple panicles. Segments of 

 ihe perianth linear. Leaves very long, linear, ke«'led. 



Greenish yellow. % Jane. Mountains. 3-4 ft. 



Genits VI ZIGADENUS. 



Perianth 6-leaved, expanding, with 2 glands at the base of 

 each. Stamens 6, inserted into the petals. Styles 3. shorter 

 than the stamens. Capsule membranaceous 3-celled, many 

 seeded. 



1 Z Glaberrimcs. Stem erect, leafy, terete. leaves sessile, linear-lance- 

 olate, glabrous, channeled, long and wide. Flowers in a terminal panicle. 

 Leaves of the perianth equal, persistent. Capsule 3-sided, furrowed, 3-celled, 

 pointed with the persistent styles. Seed numerous, angled. 

 While. '2\. June. In wet soils. 2-4 feet. 



Order CX. PONTEDERE.E. 



Perianth tubular, colored, G-parted, more or loss irregular, 

 aestivation circinate. Stamens 3 or 6, unequal, perigynous. 

 Ovary superior. 8-cellcd, many seeded. Style 1. Stigma sim- 

 ple. Capsule 3-celled, 3-valved, dehiscence loculicidal. Seeds 

 numerous, orlhotropous. Placenta central. Aquatic plants, 

 with leaves sheathing at the base. /Vower^ spathaceous. 



Gexus I PONTEDERIA. 



Perianth inferior, 6-par(ed, bilabiate, the under side of the 

 tube perforated with 3 longitudinal foramina, lower part per- 

 sistent. i>7<zmen5 6, unequally inserted. Cfl/>5u/e 3-celled. 



1. P CoRDATA. Stem none. Leaves cordate, obtuse, entire, membrana- 

 ceous, glabrous; petioles very long, succulent. Floirers in crowded spikes. 

 Corolla niloufl on the outer surface, ihe upper lip 3-parted, the lower iclefr, 



