310 ICOSANDRIA. POLITGYNIA. 



Jioruin. Ph. Obs. Stem mostly 3-floveretl, producing 

 about 2 pair of small Icvt-s, \\ hich are connate at the bas-e, 

 having iarg-e divaricate and adnata stiputes; pedui.cks 

 elongat»-;d, bractcolaie; caiix 5uijCp.mpauulate, smaller seg- 

 ments longest, petals white, subovate; awns of the seed 

 straig-ht, conspiCuousK' villous, twice as long" as the calix. 

 Hae. Around Fort Mandan oa the Missouri. A remark- 

 able specie.*, allied to ii. AnemonoideSi but having pilose 

 leaves and a villous stem and cahx- 



A Noi ill American genus, of which there are also 6 spe- 

 cies in Kurupe, 1 in Japan, 1 ni iUu-Dary, 2 atihe S;; aits of 

 Matre!la;i, aJid 2 equally indigenous vo Kamtschaik^ and 

 lN(jrth America. 



349. POTENTILLA. /.. (Cinquefoil.) 



Calix lO-clcft, inferior, sprcadinc^, 5 of the 

 segments altcrnatelj^ smaller. Fetais 5. Seeds 

 mostly rugose, roundish, naked, attached to a 

 siiiall juiceless receptacle. 



A numerous genus of herbaceous plants (only 2 species, 

 shrubbv.) with" pirumatej digitat-e or ternateb/ riivJdpr? 

 leaves; petioles alated towards the base by the adnate sti- 

 pules; flowers often corymbosely fasciculated and termi- 

 nal, ycUow, rarely white. 



SpiiciES. 1. P. irliientata. 2. emarginata. Ph. 3.iu- 

 vea. 4. viHosa. PalUiS. 5. hirsuta. 6. norwe^ca. 



7. recta? Leaves all in sevens, digitate, villous beneath; 

 leaflets cuneate-oblong, semipinnatifid, obtuse; stipules 

 subovate; stem erect, many-flowered, panicle divaricate; 

 flowers subfastigiate; petals roundis!*, yellow. Hab. In 

 depressed situations, on the plains of the Missouri near 

 Fort Mandan. Fhnvering in May or June. H. pianila. 9. 

 canadends. 10. simplex. \\. opaca. \2. dissecta. 13. ar- 

 geiHea. From Canada to the state of New- York. 



14. * humifnsa. Leaves digitate, quinate, leaflets cune- 

 ate-oblong, obiuse, incisely dentate, beneath white and to- 

 n!eutose;^flower-siems short and filiiorm, procumbent, not 

 creeping. Hab. On high gravelly hills near Foit Man- 

 dan, .Missouri. Flowering about April or May. Obs. 

 Koot subcespitose not creeping; leaves all radical, deep 

 green and pubescent above, white andtomentos.: beneath; 

 flowering stems 4 or 5 inches long, filiform, flagellate, 

 without leaves, producing a few yellow? flowers but no 

 roots. 



iS.fniticosa. 16. Anserina. 17. pen.o^hanica. In Cana- 

 da, arid on the plains of the Missouri. 18. mpina. 



A genus of near 60 species, almost exclusively indige- 

 nous' to the northern regions of Europe, America, and 



