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‘ ICOSANDRIA, POLYGYNIA, - 809 
»  minate; petals oblong-ovate, white. Has: On the island 
of Michilimackinak, lake Huron. 14. sacxatilis. 15. obovalis. 
16. arcticus. 17. ‘pistillatus, 18. pedatus. 19. Chamemorus. - 
A widely dispersed genus of about 50 species, extend- 
ing from the arctic circle, throughout Europe to the West 
indies, and passing the equator, species are also found 
in Peru, Chili, Japan, China, the islands of the Pacific, 
and on the continent of | India. 
546. DALIBARDA. ZL, 
Calix inferior 5-cleft, spreading. Petals 5. 
_ Styles 5 to 8, long and deciduous. Seeds dry. 
Small herbaceous plants with creeping perennial roots; 
scapes 1 or few flowered, flowers white or yellow; leaves 
entire or wemrag divided. 
Srrcses. 1. D. repens. 2. Fragaricides. Flowers 
yellow. This species is also found in Siberia—Of 
this genus there is. but another species indigenous to the 
Straits of Magellan: scene Pa 
347, DRYAS. LZ. (Mountain Avens.) . 
Calix inferior, simple, 8-cleft. Petals 8. = 
- Seeds many, caudate, plumose. Receptacle de- 
pressed. Se 
Low and suffruticose alpine plants, partly cespitoses = 
Z leaves alternate undivided, margin entire or rq 
~ der side white and tomentose; stipules adnate to ae pe- e 
tiole; peduncles solitary, 1- fowenege flowers i RR 
Spectres. 1. D. octopetala. 2. integrifolia. ( Pee eee 
Ph.) On the White Hills of New Hampshire. _ = eri 
A genus of 2 species, common to the ¢ norther napa 
Europe and America. 
348, GEUM. L. (Avens.) ae = 
Calix 10-cleft, inferior, segments aitersiately : 
smaller. Petals 5. Seeds awned, awn naked _ 
or bearded, mostly geniculate. . a = 
Herba Jants mostly producing | silty iid : 
Siete onek: with the terminal segment usually larger, 
“stipules adnate to the petiole; ste gpsne hae 2 
illary few-flowered. = 
Srectes. 1. G, strictum. 2. agri 
