392 comm elyx ace.-e. 



petlobd leaves, and a 1 to few-flowered tpathe bursting from 

 the sheathing side or base of a petiole, with blue or white 

 Jloiccrs. 



H. RENIFORMIS, Ruiz & Pavon. Mud Plantain. 

 Leaves round kidney-shaped ; spathe pblong-acomiaate, 3 to 5-flowered. 



Muddy margins of streams. July, Aug. Stem prostrate and rooting in the 

 mud. partly iloating. Leaves semieireularly nerred, on petioles 2 to 3 incheb long. 

 Floivers white. 



3- SCHOLLERA, Scbreber. Water Star-grass. 



Dedicated to Frederick A. SchoUcr, a German botani-t. 



Perianth salver-form, with nearly equal lance-linear 

 spreading segments on a very long filiform tube. Stamens 

 3, with similar oblong-arrow-shaped anthers (or rarely an 

 abortive fourth one) : filaments nearly equal, subulate. 

 Capsule oblong, invested by the withered perianth, 1-celled, 

 many-seeded. — ..1 grass-like herb, (/rowing wholly under 

 water, only the small pale yellow flowers 'ng on the 



surface, with slender branching stems, clothed with linear 

 translucent sessile, leaves and Xrflowtred spathe. 



S. GRAMIXEA, TVilld. Common Water Starwort. 



In flowing streams, common in the Susquehanna. July, An-'. &i m 2 to 3 feet 

 lone;. Lpuves 3 t i 6 inches long, very narrow, flowers yellow, with a tube 1;1 

 inch loug, and a thick style. 



Order 129. COSHSELLYTJACEZS:.— Spiderwart Family. 



Herbaceous plants, with jointed often branching leafy stems, and mostly perfect mud 

 t-and he perianth- jree from the 2 to- B-cetled ovary. Perianth in 



2rews; outer row herbaceous, g-le&Ted; inner petal-like, ephemeral. Stahex^ 

 6, hypogynous. Style 1 : bUoma undivided. CAraCLE 2 to 3 ceiled, 2 to 3-valved, 

 locuiicidal, 3 to several-seeded. 



1. COMMELYNA, Dill. Day-flower. 



"Dedicated to the early Dutch botanists, J. <£• G. Commclyn. 



'Periantii in 2 rows; outer one 3-leaved, calveine ; inner 

 S-leavod petal-like. Stamens (3, unequal, 3 of them fertile, 

 one of which is bent inward : 3 of them sterile and smaller, 

 with imperfect cruciform anthers: filaments naked. Cap- 

 sule 3-celled, 2 of the cells 2-seeded, the other 1-seeded or 

 abortive. — Herbaceous plant*, with branching stems, lance- 

 linear leaves contracted at the base into sheathing petioles, the 

 floral one cordate and clasping, folded together or hooded 



