157 
Rubus occidentalis L. Sp. Pl. i, 493 (1753). 
In my specimens the ffuit was very dark purple, rather than black, and hemi- 
spherical. On the wooded banks of Dismal River, near Plummer Ford, July 3 (No. 
1465). 
Fragaria vesca americana Porter, Bull. Torr. Club, xvii, 15 (1890). 
Our American form has thinner and smoother leaves than the European, and as 
a rule also shorter peduncles and oftener elongated berries. Dr. Britton! makes it a 
distinct species and points out as a d’stinctive character that the achenes are super- 
ficial in the American species. But this is also the case in the European. In fact, 
De Candolle in his Prodromus uses just this character to separate J’, vesca from F, 
elatior and IF’. virginiana. Plummer Ford, July 6 (No, 1481). 
Potentilla arguta Pursh, F 1]. ii, 736 (1814), 
Plummer Ford, July 5 (No. 1474). 
Potentilla pennsylvanica strigosa Pursh, I'l. i, 356 (1814). 
Comparatively rare in the region: Forks of Middle Loup River, July 27; South 
Dismal, August 14 (No, 1611). 
Potentilla pentandra Engelm.; Torr. & Gr. FI. i, 447 (1840). 
Very much branched and nearly as stout as the next. Perhaps this is a good 
species. Meadow, Haney’s ranch, August 5 (No. 1819). 
Potentilla monspeliensis L. Sp. Pl. i, 499 (1753). 
Common: Plummer Ford, July 3; Haney’s ranch, Grant County, August 4; Cody’s 
Lakes, August 10 (No, 1469), 
Geum canadense Jacq. Hort. Vind. ii, 82 (1772), not Murr. (1783). 
This is an older name for Geum album Gmelin.? Plummer Ford, July 3 (No. 1456). 
East of Mullen, July 19, two specimens were found with larger, light-yellow petals, 
and more incised leaves (No. 1608), perhaps a hybrid with Geum strictum. 
Geum ‘strictum Ait. Hort. Kew. ii, 217 (1789). 
Common in the meadows along the rivers: Thedford, June 21; Dismal River, June, 
27; Natick, June 20 (No, 1364). 
Some forms collected at Thedford, June 21, and Natick, June 20 (No. 1851), connect 
this with the next. They may be hybrids, but I incline to believe that Geum strictum 
and the next are varieties of the same species. 
Geum macrophyllum Willd. Enum. i, 557 (1809). 
This has been regarded as the same as Geum japonicum Thunberg. There is a 
specimen from Japan in the National Herbarium, labeled G. japonicum, but our 
plant is of another species. Natick, June 20; Plummer Ford, July 3 (No, 1458), 
Agrimonia striata Mx. Fl. i, 287 (1803). 
Thad long been in doubt whether this was Agrimonia eupatoria L.° or not. To me 
it seemed different from the European form, Dr. N. L. Britton+ shows that the Amer- 
ican plant usually referred to 4. eupatoria is distinct. Plummer Ford, July 4; Forks 
of Dismal River, July 11; Mullen, July 27 (No. 1495). 
Rosa arkansana Porter, Port. & Coult. Fl. Col. 38 (1874). 
Common throughout the State, but inthe sand-hill region confined to the hills 
nearest to the streams. Thedford, June 21; Dismal River, June 28; Plummer Ford, 
July 5 (No, 1392). 
Rosa fendleri Crepin, Bull. Soc. Bot. Belg. xv, 91 (1876). 
I include under this all the forms collected on the lowlands and banks of the rivers. 
If all belong to Rosa fendleri, this species is a variable one, and yet I can not make 
out any constant characters that will warrant a distinction even of varieties. The 
‘Bull. Torr. Club, xix, 222 (1892). 3Sp. Pl. i, 448. 
» Syst. ii, 861 (1796). 4Bull. Torr. Club, xviii, 366, (1891). 
