212 
IOWA ACADEMY OF SCIENCES. 
Pulsatilla. 
270. P. hirsutissima (Pursh.) Brit. {Anemone patens 
nuttalliana A Still frequent on dry prairies 
but becoming scarcer each year. 
Clematis. 
271. C. virginiana L. Frequent in thickets and along 
roads. 
272. C. viorna L. Borders of fields; scarce.' 
Ranunculus. 
273. P. delpliinifolius Torr. {R, multifidiis Pursh.) 
Frequent in swamps and slow streams. The 
variety terrestris Gr. is also found. 
274. R. ovalis Raf. {R. ydiomhoideus Gold.) Dry 
prairies; frequent. 
275. R . ahortiviis \j. Dry or moist ground; abundant . 
276. R. septentrionalis Poir. Abundant in damp ground. 
277. R. fasicularis Muhl. Abundant in dry open 
ground . 
Thalictrum. 
278. T . purpurascens h . Dry open woods; scarce . 
279. T. polygamu7n Muhl. Damp meadows; abundant. 
BERBERIDACE^. 
Berberis. 
280. B. vulgaris h. Open ground; scarce. 
Caulophyllum. 
281. C, thalictroides (L.) Michx. Rich woods; common . 
Podophyllum . 
282. P.peltatumL. Rich woods; common . 
MENISPEKMACE^. 
Menispermum. 
283. M. canadense h. Prairies and borders of woods; 
common. 
PAPAVERaCE^. 
Sanguinaria. 
284. S. canadensis L. Abundant in rich woods. 
