494 TRANS. ST. LOUIS ACAD. SCIEN'CE. 



P. KiVALis, Nutt., var. pentandba, (Eng-el.) Watson, Proc. Amer. 



Acad. 1S73 (Revision Poten.) — P. poiiandra. Engel. in Torr. & Gray, 



Y\. i. p 447. 



Sandy soil ; infrequent. 



Along the railroad near lower gate; near first bridge on wagon road south of 

 Ames; bottom-land in ''the forks." 



Resembles P. Norvegica. and often grows with it, but always in sandy soil. Usu- 

 ally much branched at the very base, but sometimes simple; branches ascending; 

 lower leaves 3.foliolate, but lateral leaflets parted almost to the base, thus appear- 

 ing as if palmiitely 5-foliolate; petals minute; stamens usually 6, sometimes more; 

 flowers smaller and pedicels more slender than in the last. The same was collected 

 at Davenport, Sioux City, and Hamburg. The descriptions of this read, "stamens 

 5, opposite the sepals," but all the flowers examined showed usually 6, or sometimes 

 7 or S. In the Engelmann herbarium is a specimen from Neoshe river bottom, 

 labelled "/*. pentandra, Engel.," accompanied by a sketch showing j stamens. 

 Another specimen from Humboldt county, Iowa, collected by Dr. J. C. Arthur, is 

 accompanied by a note, "stamens 6-S (10?)." etc. 



P. Anserina, L. Spec. 



Abundant along the railroad embankment at Jewell Junction. 

 P. Canadensis, L. Spec. 



Dry banks; abundant. 

 Agrimonia Eupatoria, L. Spec. 



Woods; abundant. 

 Rosa blanda, Ait., var. Arkansana, (Porter) Best, Torr. Bull, 

 xvii. 1890. — R. Arhansana^ Porter, Syn. Fl. Col. 1S74. 



Prairie; abundant. 



This is the common wild rose of central Iowa. It has passed for JJ. hlanda, Ait. 

 PiRUS CORONARIA, L. SpeC. 



Copses ; frequent. 

 €ratjegus coccinea, L,, var. mollis, Torr. & Gray, Fl. i. p. 465. 



Woods ; frequent. 

 C;. TOMENTOSA, L. SpeC. 



Woods, chiefly lowland; frequent. 

 C PUNCTATA, Jacq. Hort. \'ind. i. 1770. 



Thickets; frequent. 

 Amelanchier Canadensis, (L.) Torr. & Gray, Fl. i. p. 473. 

 Mespilus Canadensis, L. Spec. 



Clay bluffs; not uncommon. Hoggatt's woods; more abundant on Skunk river. 



SAXIFRA GA CEM. 



Heuchera hispid a, Pursli, Fl. 



Prairie ; frequent. 

 Parnassia Caroliniana, Micbx. Fl. 



Swamps; scarce. 



Bog near pump-house, and elsewhere. 



RiBES Cynosbati, L. Spec. 

 Woods; not uncommon. 

 R. GBACILE, Michx, Fl. 



Woods; abundant. 



