WY 
153 
means of aerial rootlets. If intermediate forms are found they are rare. The 
variety is growing both in the woods and on the prairies. Common near the rivers: 
Natick, June 20 (No. 1416). 
LEGUMINOS2. 
Melilotus alba Desr. in Lam. Encyl. iv, 63 (1797). 
Escaped: Banks of Middle Loup River, Thedford, August 26 (No. 1726). 
Medicago sativa L. Sp. PI. ii, 778 (1753). 
Escaped: Thedford, June 16 (No, 1328), 
Lotus americanus (Nutt.) Bisch, Linniwa, xiv, Suppl. 182 (1840); Trigonella 
americana Nutt. Gen. ii, 120 (1818), 
The oldest name is Lotus sericeus Pursh,' but this name is preoccupied by L. sericeus 
DC.’ Railroad embankment, near Mullen, July 24; Forks of Middle Loup, July 26 
(No. 1592). 
Psoralea argophylla Pursh, FI. ii, 475 (1814). 
The oldest name, P. incana Nutt.,’ is a nomen nudum, Prairies: Thedford, June 21; 
Plummer Ford, July 8 (No. 1390). 
Psoralea digitata Nutt.; Torr. & Gr. FI. i, 300 (1838). 
This ineludes also P. campestris Nutt..4 which should have narrower bracts and 
obtuse leaves. It can, however, scarcely be separated from P. digitata, even as a 
variety. Thedford, June 17, 20; Norway, June 22; Dismal River, June 27 (No. 1341). 
Psoralea lanceolata Pursh, Fl. ii, 1475 (1814). 
Common in the sand hills. It spreads by long, slender rootstocks, sending up 
shoots here and there. At Seneca J found in a blowout a specimen, which had such 
a rootstock about 10m, long. My specimens belong to the form which Miss A. M. 
Vail® calls P. micrantha Gray. I can not find any character that will separate the 
two even as varieties. They grow together and grade into each other as shown very 
well in the case of my No, 53 (1891) from Kearney. Thedford, June 17, 20; Norway, 
June 22; Dismal River, June 27 (No. 1327). 
Amorpha fruticosa L. Sp. Pl. ii, 718 (1753). 
Common along the streams. It was collected at Thedford, in flower, June 15; in 
fruit, September & (No. 1514), 
Amorpha canescens Pursh, FI. ii, 467 (1814), 
Common all over the sand hills: Norway, June 22; Dismal River, June 29; Plum- 
mer Ford, July 8; Thedford, September 8 (No. 1417), 
Kuhnistera villosa (Nutt. ) Kuntze, Rev. Gen, Pl. i, 192 (1891) ; Petalostemon villo- 
sus, Nutt. Gen. ii, 85 (1818). 
Common on the sand hills: Mullen, July 24; North of Whitman, July 31 (No. 1589). 
Kuhnistera purpurea (Vent.) MacMillan, Metasp. Minn. Val. 329 (1892); Dalea 
purpurea Vent, Hort. Cels. t. 40 (1800), 
Plummer Ford, July 3 (No. 1472).. 
Kuhnistera candida occidentalis Rydberg.® 
Plummer Ford, July 3 to 8; Mullen, July 24 (No. 1480), 
IFL. ii, 489 (1814). 
?Cat. Hort. Monsp. (1813). 
3 Fraser’s Cat. (1815). 
4Torr. & Gr. Fl. i, 301. 
® Bull. Torr. Club xxi, 94 (1894). 
‘In order to make A. candida better understood the following descriptions and 
localities are given: 
KUHNISTERA CANDIDA (Willd.) Kuntze, Rev. Gen. Pl. i, 192 (1891); Dalea candida 
Willd. Sp. PI. iii, 1837 (1803). 
Flowers white, calyx angularly 10-striate, nearly glabrous, pubescent only on the 
