354 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
MINNESOTA: Battle Lake, £. P, Sheldon; Hennepin County, 1890, Sand- 
berg; Minneapolis, 1892, Sandberg; Ulen, 1891, Bh. P. Sheldon; Cannon 
River, 1861, 7. J. Hale, 
WYOMING: Cheyenne, 1901, A, Nelson 8592, 
Intinors: Hyde Park, Chicago, 1899, 4. Chase 1173. 
Iowa: Armstrong, 1897, Cratty & Pammel 614; Harrison County, Hiteh- 
cock 14; Ames, 1892, Geo. Carver, 
Wisconsin: Lake Pepin, 1861, 7. J. Male; St. Croix, 1861, Hale, 
MANITOBA: IS9S, HW. S. Thompson. 
Allionia hirsuta rotundifolia Lunell @ seems to be a form of this species. It 
uppears to be a depauperate state, produced, probably, in the same way 
as A. bushii. 
35. Allionia chersophila Standley, sp. nov. 
Stems erect, tall, 1 meter high or even more at times, stout, simple below or 
sparingly branched, densely soft-pubescent throughout, not glandular above; 
leaves linear-lanceolate, rather thick, sessile, blunt-pointed, tapering to the base, 
more or less soft-puberulent ou both surfaces, especially beneath: inflorescence 
ample, paniculate, branches opposite; involucres on pedicels 10 mm. long or 
less, 15 mm, broad, and 10 mm. high or less, the lobes broadly ovate, obtuse, 
sometimes mucronate, densely soft-pubescent; fruit 5 mm. long, narrow, acute, 
narrowed below, with 5 conspicuous ribs, these almost smooth, the spaces be- 
tween them finely tuberculate, minutely hispidulous. 
This is perhaps as closely related to A. pilosa as to any species, but is readily 
separated by its denser and softer short pubescence and stouter habit. Type 
in the herbarium of the University of Wyoming, cotype in that of Mr. K. K. 
Mackenzie; collected in barrens at Lees Summit, Jackson County, Missouri, Sep- 
tember 9, 1901, Maekenzie 421; also collected in Jackson County, 1891, by Mr. 
BR. I’. Bush, who says that the plant is rare. 
Other specimens eramined: 
Missouri: Barrens west of Lees Summit, 1899, MWackenzie; dry prairie 
along railroad north of Lees Suminit, 1900, Maekenzie; barrens west of 
Lees Sununit, 1899, Mackenzie, 
KANSAS: “In rocky places,” Miami County, 1882, Oyster. 
36. Allionia trichodonta Standley, sp. nov. 
Stems erect or ascending, sparingly branched, the branches alternate, slender, 
rather sparingly puberulent throughout or almost glabrous below: leaf blades 
linear or linear-lanceolate, 45 mm. long and 7 mm. wide or less, of medium 
thickness, attenuate to the apex and to the base, sessile, the margins Wavy and 
ciliolate, with a few long, weak hairs on both surfaces; inflorescence narrowly 
cymose, its branches densely short-villous; involucres almost sessile or some- 
times pediceled in the axils of the lower leaves, 11 mm. in diameter or less, 
densely short-villous, the pubescence having a silky appearance, especially on 
the margins of the lobes, these elliptical or lanceolate, acute or acutish ; 
flowers not seen; fruit 4 mm. long, rather obtuse above, slightly narrowed 
below, with 5 very thick, smooth ribs, so thick that there are scarcely any 
spaces between them, minutely hispidulous. 
Distinguished from A. codhuilensis and A. pseudaggrcgata, its nearest allies, 
hy its narrower leaves and bracts and the thicker ribs of the fruit: from A. 
codhuilensis Dy its alternate branching, and from A. pseudaggregata by its 
more pubescent stems. Type in the herbarium of the University of California 
(no, 101379), collected at Ixmiquilpan, Hidalgo, Mexico, 1905, Purpus. 
“Bull. of the Leeds [N, Dak.] Herb. no. 2, 6, 1908, 
