170 THE FLORA. 



17 H. adpres'sum. Closed S. Lvs. lialf-erect. Petals obovnte, longer tlian sep. 



18 H. dolabrifor'me. Hatchet S. Lvs, spreading. Pet. dolabriform^ long as sep. 



19 H. angulo'sum. Angled S. Lvs. ovate, acute. Style thrice longer than ovary. 



20 H ellip'ticum. Elliptic S. Lvs. elliptic, obtuse. Style as long as ovary. N. M. 



21 H. grave'olens. Strong-scented S. Smooth. Lvs. oblong-ovate, clasping. S. 



22 H. pilo'sum. IlairT/ S. Hairy. Lvs. lance-ovate, appressed. S. 



23 H. mu'ticum. Dwarf S. Lvs. ovate, clasping, 5-veined. Cymes leafy, c. 



24 H. Canaden'se. Canada S. Lvs. linear, black-dotted. Cymes leafless, c. 



25 H. Saro'thra. Fine-weed S. Lvs. awl-shapcd, minute. FIs. sessile. 



26 H. Drummon'dii. Drummond'' s S. Lvs. linear. FIs. stalked. W. 



Order XIX. DROSERACEJS. The Sundews. 



Herhs growing in bogs, often covered with glands, with 

 leaves alternate, circinate (rolled from top to base) in the bud ; 

 Jioicers regular, of 5 persistent sepals and 5 withering j9e^aZ«; 

 stamens 5, distinct, and a single, compound ovary ; 

 styles 1-5, and fruit a 1-3-celled many-seeded capsule, and with 

 seeds having a small embryo at the base of the albumen. 



Analysis of the Genera. 



I Stamens 5. Dkos'era. 1 



j coiled (circinate) in the bud. j Stamens 10-15. Dion.e'a. 2 



Leaves j not coiled in tlie bud. Sterile stamens many. Parnas'sia. 3 



1. DROS'ERA. Sundew. 



Sepals 5, united at base, persistent. Petals 5. Stamens 5. Styles 3-5, 

 each deeply 2-parted, so that there seems to be 6-10. Capsule 3-5-valved, 

 1-celled, many-seeded. — U Small aquatic herbs. Leaves (all radical in 

 the American species) clothed with long, reddish, gland-bearing hairs, 

 exuding a clear, sticky fluid. Flowers in a raceme on a slender scape, 

 which is at first coiled downward, but uncoils as the flowers open. 



* Scape 4-6 times longer than the spreading leaves 1-3 



* Scape 1-2 times longer than the ascending leaves 4-6 



1 D. rotundifo'lia. Round-leaved S. Leaves round, on long hairy stalks. F.'s white, 



small (about 2," broad). Scapes 5-8'' high. c. 



2 D. minor. Lesser S. Lvs. wedge-obovate, on suT)oth stalks. Scape 3-6'. p. S. 

 8 D. brevifo'lia. Tiny S. Lvs. spatulate, on short, hairy stalks. Scape 2-3'. p. S. 



