114 PITTONIA. 
S.coGNaTUs. Stems 10 to 16 inches high, commonly al- 
most naked and scapiform and bearing a corymb of 3 to 6 
or 7 heads of larger than middle size: herbage green and 
almost glabrous, varying to almost canescently tomentu- 
lose: leaves in the basal tuft erect, slender-petioled, from 
Obovate with cuneate base, to attenuate-spatulate, mostly 
serrate or serrate-toothed, some crenate, a few even subpin- 
natifid, 1 to 13 inches long, on slender petioles often twice 
as long; reduced cauline ones when present oblanceolate 
and mostly pinnate-toothed: heads about j inch high, on 
elongated and minutely subulate-bracted pedicels, these 
and the base of the involucre tomentulose: rays linear- 
oblong, deep-yellow or orange, 4-nerved : achenes with scat- 
tered almost papilliform hairs on the angles. 
In dry lowlands at Piedra, southern Colorado, 11 July, 
1899, C. F. Baker. Species as it were intermediate between 
S. Balsamitz aud S. mutabilis ; very distinct from the last by 
its nearly naked stem and large heads. The stems also seem 
to have been solitary, or nearly so, from stout ascending or 
partly almost horizontal rootstocks. Thesmaller plants are 
monocephalous. The rays vary in intensity of coloring. 
S. CROCATUS, Rydb. Bull. Torr. Club, xxiv. 299. If I were 
revising the genus Senecio, or the North American species 
of it, I do not see how I could avoid rejecting this as a 
nomen nudum. All that could save it, by any possibility, 
would be the line and a half of description, which I infer to 
nave been drawn from the Flodman specimen from Montana 
which Mr. Rydberg cites. The pretended synonym “8S. 
aureus, var. croceus, Gray " avails nothing whatever. No ade- 
quate description of such a variety was ever given. Dr. Gray 
applied the name, after his usual way, to a considerable ag- 
gregate of things belonging to what Mr. Rydberg himself 
would regard as very distinct species. They were desig- 
nated merely as having saffron-colored or copper-colored 
flowers. In some it was conceded that the rays only were 
