NOVITATES OCCIDENTALES. 47 
shorter than the narrowly linear acute leaves; stipules thin, 
very short, broadly ovate and acutish, varying to obtuse and 
truncate: flowers mostly solitary, one to each pair of leaves, 
on slender pedicels shorter than the leaves: petals small, 
lilac: capsule ovate, obtusish, exceeding the sepals: seeds 
minute, red-brown, broadly semi-obcordate, smooth, the very 
thick margin as broad as the small body or nucleus. 
Seven Mile Lake, Wyoming, 15 Oct., 1894, Prof. Aven 
Nelson. This is very interesting as being the first Tissa 
to appear from the interior of our continent, all the others 
being of maritime districts. The species is very well marked, 
but the specimens are defective in not showing the root; so 
that one cannot say whether the plant is annual or perennial. 
It is not small, the branches, though very slender, measur- 
ing nearly a foot in length, and seeming equally floriferous 
throughout, the pedicels not forming a distinct cyme even at 
the ends of the branches. 
Trifolium Morleyanum. Stems slender but rather 
rigid, apparently quite erect, 6 inches high or more, from 
perennial horizontal rootstocks: herbage glabrous or nearly 
so: internodes short: petioles less than 4 inch long: leaflets 
of lower leaves obcordate, only 2 or 3 lines long, of the upper, 
mostly linear or narrowly lanceolate, 4 inch long or more, 
all rather strongly lacerate-serrulate, the teeth spinulose- 
tipped, the apex of all bearing a conspicuous subulate-aristi- 
form cusp: peduncles mostly subterminal, more than twice 
the length of the leaves: heads hemispherical, 4 inch broad; 
involucre deeply cleft into subulate-aristiform segments: 
calyx-tube campanulate, about 15-nerved, much shorter than 
the triangular-subulate aristate-pointed teeth, these with 
more or less reticulate venation near the base: pods well 
exserted from the calyx-tube but not equalling the teeth, 2- 
or 3-seeded. 
A small but very distinct perennial species of the involu- 
crate group, collected in fruit only, at Morley’s Station, 
Modoc Co., Calif., 1894, by Baker & Nutting. 
