DBCANDRIA PENTAGYNIA. 291 



3ir. CERASTIUM. L. (Mouseear-Chickweed.) 

 Calix 5-leaved. Petals 5, bifid or emargin- 

 ate. Capsule 1 -celled, bursting at the summit, 

 lO-toothed. 



Flowers terminal; stamina sometimes 5, and 3 styles; 

 capsule subcylindric, or roundish. Stems with an elastic 

 centre. 



Species. \. C vulgaUm. ^ viscosvm. 3. semidecan- 

 dmm. 4. * gliitino^um. Sofily pubescent and viscid, 

 erect; leaves elong-aied, dislant, linear-oblong, acute; pe- 

 tals oblon.^, bifid at t!ie point, longei- than the calix; pe- 

 duncles at length much longer than t!ie flowers, at first 

 snorter. Hab. Oil the banks of the Schuylkill near Phi- 

 ladelphia. .\ very distinct and truly indigenous sjiecies. 

 Obs. Annual. Stems nearly sinnple and erect, several 

 ■from the same root, often a foot high, remarkably viscid 

 above. Radical leaves spathulate, all rather acute, can- 

 line subamplexicaule, linear-oblong, sublanceolate, plaited 

 at the point, often 2 inches long, and only ." lines broad. 

 Flowers terminal, subpaniculate; petals linear-oblong. 

 Stamina 10, 5 alternately longer, btyles 5, short. Cap- 

 sule double the length of the calix, iOtoothed, oblong- 

 cylindric, teeth acuminate. 



5. arvense. 6. tenuifolium. 7- eloiigatum. Pu. 



An European genus. 



318 AGROSTEMxMA. X. (Corn Cockle.) 



Calix l-leaved, tubulous, coriaceous, summit 

 5-cleft. Petals 5, unguiculatc; limb obtuse, and 

 undivided. Capsule 1 -celled, with a 5-toothed 

 opening. 



Flowers terminal. Petals in A. Githng^o entire and na- 

 ked; the rest have emarginate petals and an appendicu- 

 late orifice. 



Species. 1. A. Githago. Naturalized in corn-fields 

 as in Europe. 



319. LYCHNIS. X. 



Calix tubulous, 5-toothed. Petals 5, iingui- 

 culate; limb subbifid. Capsule 1 to 5-ceiled, 

 with a 5-toothed opening. 



A genus of various habit and scarcely natural; flowers 

 fastigiate, dichotomously paniculate, or solitary. 



