h 



210 TETRANDRIA MONOGYNIA. 



-Roof perennial. Stem 2 feet high, below columuav, above slightlit 

 angled by the decurrent leaves. Leavps alternate, glabrous, 2 incliM 

 long, when magnified slightly serrulate ; with two subulate glands »t 

 base. Cahjx shorter than the germ. Petals obovate, lonjjer than the 

 calyx, yellow. Jnthers. oblong, large, erect, with the margins crenate. 

 Germ oblong, furrowed, tlie angles rounded. 



Grows in shallow water, generally in ditches and swamps. 



Flowers July — September. 



il. ViRGATA. Mich. 



L. caule virgato, pu- f Stem virgate, pubes- 

 bescente; foliis ovato-e- cent; leaves ovate, elon- 

 longatis, obtusis; calyce ( gate, obtuse; calyx re- 

 reflexo; capsulis alatis. flexed; capsules winged. 



E. 



Mich. 1. p. 89,— Pursh, 1. p. 110? 

 J^. alternifolia, Walt p. 89. 



Root perennial. Stem erect 2—3 feet hi^h, slightly angled b/ th*^ 

 decurrent leaves, pubescent, rarelj branched. Leaves closelj sessile, 

 narrow, soft, pubescent, rounded atb&se, the summit obtuse or abropt- 

 ly acute, J*Yozr^r5 rather remote, on peduncles about I inch lon^ 

 Calyjc longer than the capsule, segments lanceolate? acute, reflexed. 

 J^etals obovate, longer than t!)e calyx, caducous. Capsule nearl/ cu- 

 bic, with the angles winged^ opening through a central pore. 



Grows in close soils. Verj common. Less of an aquatic plan^ 

 Hian any other species. 



Flowers May — September, 



12- PiLosA, Walt. 



L. pilosajinterdumhir- I Hairy, sometimes Iiir* 

 suta; caule erecto, ramo- ( sute; stem ei ect, brancli- 

 so;-foliis ovatis, obtusis; ing; leaves ovate, obtuse; 



ealyce erecto ; capsulis I calyx erect ; capsu^e^ 

 alatis. E. I wiilged. 



Walt. p. 89. 



L. hirsuta, La. Marck, Encyc. p. 58T. — Pursh, L p- H^* 



Sp. pi. 1. p. 673. . 



Root perennial. Stem erect, sorretimes virgafe. sometimcs^^ ^^ 

 branched, hairy, columnar, the branches Very slightly marked ^-^ 

 decurrent leaves. Leaves obtuse at each end, 10 — 1^.'^"^? ^^®^Stf' 

 lines wide. Flowers axillary, on peduncles one half *^^'^ v^'^^' ^llaWf 

 vaunts of the calyx longer than the germ. Petals obovate, J^j. j^^. 

 rather longer than the calyx. Capsule somewhat cubica ? 



ly wing«d, opening through a central pore. 



