74 RYDBERG: Rocky MOUNTAIN FLORA 
The segments resemble those of some species of Cogswellia of the C. 
triternata group, but the leaves are pinnate, not ternate, the plant 
has the densely cespitose, sheath-covered caudex characteristic 
of Cynomarathrum, and the fruit is of that genus, having some of 
the dorsal ribs winged, and the calyx-teeth are prominent. It grows 
on sides of canyons at an altitude of 1,600 m. 
UtaH: Proposed dam site, near Wilson Mesa, Grand County, 
Utah, July 1, 1911, Rydberg & Garrett 8371 (fruit; type, in herb. 
N. Y. Bot. Gard.); also 8414 (withered flowers). 
Cogswellia simplex (Nutt.) Rydb. 
Peucedanum triternatum platycarpum Torr. Stansb. Rep. 389. 1852. 
Peucedanum simplex Nutt.; S. Wats. Bot. King. Exped. 129. 1871. 
Lomatium platycarpum C. & R. Cont. U. S. Nat. Herb. 7: 226. 
1900. 
Cogswellia platycarpa (Torr.) M. E. Jones, Cont. West. Bot. 12: 32. — 
8. 
It was unfortunate that an amendment to the Rochester Code 
ever was passed at Madison, by which a varietal name could 
supersede a specific name, and I am glad that the amendment 
mentioned has been recalled and that we can return to the specific 
name well known by a long usage. 
Cogswellia leptophylla (Hook.) Rydb. sp. nov. 
Peucedanum triternatum leptophyllum Hook. Lond. Journ. Bot. 6: 
235. 1847. 
This species is related to C. simplex, C. triternata, and C. 
robustior. In general habit, it resembles most the second, but 
the leaflets are narrower, the fruit is shorter and relatively broader 
and puberulent. C. simplex has less compound leaves, broader 
leaflets, larger and glabrous fruit; C. robustior has much broader 
and more spreading leaflets, longer fruit with very narrow wing. 
Montana: Helena, June-July, 1891, Kelsey; also May, 1890; 
University campus and hillsides, Missoula, 1901, MacDougal 130; 
Old Sentinel, June 12, 1901, MacDougal; Deer Lodge, June, 1888, 
Traphagen; Mt. Ascension, Helena, 1909, Butler 4057. 
IpaHo: Hills near Boise, June 7, 1892, Isabel Mulford; Weiser, 
April 18, 1900, M. E. Jones 6336. 
New York Botanical GARDEN. 
