IOWA ACADEMY OF SCIENCES 
129 
Specimens in the writer's collection are from Winneshiek, Allamakee, 
Jones, Johnson, Decatur and Emmet counties. Professor Fink reported 
the species from Fayette county; rrofessor Bessey from Story county; 
Barnes, Reppert and Miller from Scott and Muscatine counties; and Peck 
from Hardin county.' 
Be,sse.y, E. Fourth Biennial Tteport of the Iowa State Agricultural (Vh- 
iege, p. 123, 1872. 
Arthur, J. C. Contributions to the Flora of Iowa, p. 32, 187G. 
T'pham, Warren. Catalogue of the Flora of Minnesota, p. 147, 1884. 
Hitchcock, A. S. Transact! Oils of the Academj’ of Science of St. Louis, VoT. 
n. p. 520, 1892. 
I’ammel, L. H. I’roceedings of the Iowa Academy of Sciences, 1892, Vol. 1, 
part 3, p. GO, 1893. 
Fink. BrucC; Froceedings of the low'a Academy of Sciences, 1S9G, Vbl. 4, p. 
103. 1897. 
Fitzpatrick, .7. I'roceedings of the Iowa Academy of Sciences, 1897. V'ol. 
5, p. 129, 1898. 
Fitzpatrick, T. ,7. and M. F. I.,. I^roceedings of the Iowa Academy of Sciences, 
7 897, Vol. 5, p. 165, 1898. 
Barnes, W. D. ; Reppert. Fred ; and IMiller. A. A. Proceedings of the D’aven- 
port Academy of Sciences, Vol. 8, p. 2G1, 1900. 
Crafty, R. I. I'roceedings of the Iowa Academy of Sciences, 1903, Vol. 11, 
p. 27 5, 1904. 
l‘eck, Morton E. Proceedings of the Iowa Academy of Sciences, , 7 904. Vol. 
12. p. 203, 1905. 
2. Allium cernum Roth; Roem. Arch. 1: Part 3, 40. 1798. Nod- 
ding Wild Onion. 
Bulbs narrowly ovoid, tapering above into a neck 1 — 2 inches long, 
usually clustered on a short rootstock, with membranous coats; scapes 
1 — 2 feet high, slender, faintly ridged; leaves linear, flat or channeled, 
1 — 2 lines wide, nearly or quite as long as the scape, bluntish; umbel 
nodding, 15 — SO-flotvered, subtended by two short deciduous bracts; 
pedicels filiform, 8 — 15 lines long; flowers white or rose, sometimes pur- 
plish; perianth segments ovate.-oblong, acute or obtusish, 2 — 3 lines long; 
stamens exserted; filaments slender; ovary 3-celled, with two ovules in 
each cell; capsule 3-lobed, included in the perianth, each valve with two 
processes near the summit. 
This species is said to range from New York to Minnesota, South 
Dakota, south in the mountains to South Carclina and New Mexico. The 
habitat is banks and hillsides. The flowers appear in July and August. 
In Iowa the species seems limited to the northern half of the state. In 
Emmet county the writer found the species common on the prairies. 
Professor Arthur reported the species from Plymouth and Winneshiek 
counties and the State ' University herbarium has specimens from Dickin- 
son and Lyon counties. The writer also has a specimen collected in 
Winneshiek county. , 
Arthur, J. C. Proceedings of the Davenport Academy of Natural Sciences. 
Vol. 3, p. 170, 1882. 
Crafty, R. I. Proceedings of the Iowa Academy of Sciences, 7 903, Vol. 11, 
p. 215, 1904. 
