SCHOLLERA. TRIANDRIA. MONOGYNIA. 41 



S. graminifolia W ill d. I.e. Mil hi. Cat, I.e. S. 

 gramineus Bart. Fl. Am. Sept. t. 54. Leptanthus gra-- 

 mineus M i c h. Fl. I. p. 25. t. 5. f. 2. Per s. Syn. I. p. 56. 

 Heteranthera graminta V a hi Enum. II. p. 45. P ur sh 

 Fl. I. p. 32. CoMMELiNA duhia J acq. Obs. hot. III. p. 9. 

 t. 59. Anonymos aquatica graminifolia. Clayt. Firg-. n.814. 

 RooC perennial. Stem floating, slender, dichotomous, rooting at 

 the base of the lower leaves. Leaves sessile, narrow-linear, 

 3 — 6 inches long, slightly sheathing at the base. Sfiath short, 

 lanceolate, terminating in a long sharp point. Tube of the 

 corolla very long and slender, a little curved ; border yellow, 

 deeply divided, appearing as if 6-petalled ; segments lanceo- 

 late, acute. Stamens 4 ; filaments broad and flat, inserted into 

 the orifice of the corolla ; 3 of the anthers linear, longer than 

 the style ; the other abortive, shorter than the style. Style 

 thick; stigma obtuse, 3-lobed ? 

 Hab. In flowing water ; not uncommon, July — August. 



31. HETERANTHERA. Ruiz ^ Pavon. 



Calyx a spath. Corolla^ tube long and slender; 

 border 6-parted, equal. Anthers of 2 forms. Capsule 

 3-celled, many-seeded, opening at the angles ; dissepi- 

 ment contrary. Ruiz £i? Pav. FL Peruv. I. p. 43. 

 tyi.f.a. Roem.^J Schult. Gen.14.1. Heter- 

 ANDRA P.de Beauvois Trans. Amer. Pkil. Soc. IV. 

 p. 173. Leptanthus il/ic//. i^/. I. p. 24. Nutt, 

 Gen. I. p. 28. Nat. Ord. Narcissi Juss. 



H. reniformis /?. c^- P.: leaves orbicular-reniform ; spath 



oblong, acuminate, 2 — 3-flowered.- Ruiz ^ Pav on. I.e. 



Roem. <^- Schult. I. p. 487. H. acuta Va h I Enum. II. 



p. 42. P ur sh FL I. p. 32. Heterandra reniformis P. 



de Beauv. 1. c. cum icone. Leptanthus reniformis Mich. 



1. c. p. 25. L. peruviana et xirginica P ers. Syn. I. p. 5Q. 

 Root perennial, creeping. Stem prostrate or partly floating, 

 branched at the base, about 3 inches long. Leaves on foot- 

 stalks about 2 inches long, broad-reniform or cordate, with a 

 short point, marked with semicircular nerves meeting at the 

 apex. S/iath closely enveloping the flowers, terminating in a 

 cusp. Corolla white, very evanescent and only partly expand- 

 ing; tube cylindrical; segments oblong. Stamens very un- 

 equal ; filaments inserted into the limb of the corolla at the 

 throat ; anthers, 2 small and nearly round ; the other oblong. 

 Style as long as the tube of the corolla; stigma simple, obtuse. 

 Cafisule oblong, subtriangular, crowned with the persistent style. 

 Seeds oval, marked with about 8 elevated longitudinal lines, 

 and minutely striated transversely. 



