L1NE.E. 55 



9. C. connatum Beck : very hairy, diffuse ; leaves somewhat obo- 

 vate, connate ; flowers in dense clusters ; petals 2-cleft, a little longer 

 than the acute calyx ; capsule cylindrical, straight, twice as long as the 

 calyx. C. hirsutum Muhl. Ell. Torr. C. semidecandrum Walt. 



HAB. N. Y. Del. S. to Car. May, June. ^.Stem procumbent. 

 Flowers white, in terminal clusters. I have changed the name 

 given to this plant by the authors above quoted, in consequence 

 of finding a foreign C. hirsutum, in De Candolle's Prodromus, 

 which appears to be quite distinct from this species. 



ORDER XIX. ELATINE^E. Lind. 



Sepals 3 5, distinct, or slightly conpate at the base. Pe- 

 tals hypogynous, alternate with the sepals. Stamens equal 

 in number to or twice as many as the petals. Ovary 3 5- 

 celled ; styles 3 5 ; stigmas capitate. Capsule 3 5 celled, 

 3 5 valved. Seeds numerous, with a straight embryo, whose 

 radicle is next the hilum ; albumen none. 



Annuals, found in marshes. Stems fistulous, rooting. 

 Leaves opposite. 



1. CRYPT A. Nutt. 



Calyx Sheaved, inferior. Carol 2 3 petalled, closed. 

 Style almost wanting. Stigma obtuse. Capsule 2 3 cell- 

 ed, 2 3 valved ; cells 45 seeded. 



Diandria. Monygynia. 



C. minima Nutt : stems prostrate, creeping and rooting ; leaves cu- 

 neate-obovate, opposite, entire, obtuse, 1-nerved; flowers very minute, 

 axillary, sessile, alternate. Pcplls americana Pursh. 



HAB. Banks of streams. Throughout the U. S. Aug. 0.? 

 Stems prostrate, with assurgent branches. Leaves opposite, obo- 

 yate or oval. Floicers sessile, with 23 stamens. Petals round- 

 ish, white. For a very minute description of this little plant by 

 Mr. Nuttall, see Jour. Phil. Acad. i. 117. According to Mr, 

 Arnott, it belongs to the genus Elatine, and is a congener, and 

 indeed very closely allied, to E. triandra. Edin. Jour. Nat. # 

 Geog. Science, i. 430. 



ORDER XX. LINE^E. De Cand. Land. 



Sepals 3 4 5, persistent, with an imbricated aestivation. 

 Petals equal in number to the sepals, hypogynous, unguicu- 

 late, with a twisted aestivation. Stamens as many as the pe- 

 tals, and alternate with them (with intermediate teeth or abor- 

 tive stamens) arising from an annular torus ; anthers ovate, 

 erect. Ovary with as many (rarely fewer) cells and styles as 



