16 1 HEPTANDRIA.— MONOGYNIA. 



HEPTANDRIA. 



MONOGYNIA. 



206. TRIENTALIS. Cal. 7-leaved. Cor. 7-parted, 

 equal, flat. Berry dry, 1-celled, many-seeded. 



267. iESCULUS. Cal. 1-leaved, 4— 5-toothed, ven- 



tricose. Cor. 4 — 5-petalled. Pet. unequal, pu- 

 bescent, inserted upon the calyx. Caps. 3- 

 cellecl. Seeds large, solitary. 



MONOGYNIA. 



266. TRIENTALIS. Chick-weed winter-green. 

 Primulaceai. 



T. americana : leaves narrow-lanceolate, acuminate, 



serrulate ; petals acuminate.* 

 IIAB. Woods and swamps. U . May — June. Leav. 



nhorled ; fl. sol., rvh. 



067. yESCULUS. Horse-chesnut. Aceracece. 



JEt. glabra: leaves quinate, very smooth, corolla 4- 

 petalled, spreading, with the claws as long as the 

 calyx ; stamens longer than the corolla ; fruit spi- 

 nous. 



IIAB. Woods. May. Tj. A large shrub ; fl. large, 

 yel. uh.,panicul. 



OCTANDRIA. 

 MONOGYNIA. 



* Flowers superior. 



268. RI1EXIA. Cal. urceolate, 4— 5-cleft. Pet. 4. 



inserted upon the calyx. Anth. incumbent, at- 

 tached to the filaments behind, naked at the 

 base. Caps, setigerous, 4-celled, free in the ven- 



* These characters, pointed out by Dr. Bigelow, I am now satis- 

 fied, will distinguish the N. American Trientalis from the European. 



