Conyza Less.
C. salicena Kellogg. [[Fig. 6.]]
Fig. 6.
Stem fruticose, erect, three to four feet in height; branches subglabrous or slightly puberulent, angular; leaves lanceolate, short petiolate, cuneate, base entire, triplinerved, apex acute with few remote teeth on the upper third, lamina fleshy, varnished, subglabrous, minute glands scattering, slightly puberulent chiefly beneath (two to three inches in length, about half an inch in breadth), panicle subcorymbose; heads pedicellate, mostly subtended by linear nerved bracts; involucral scales ovate-oblong, sub-acute, scarious, margins irregularly cut-toothed or somewhat erose, cut-ciliate; achenia pubescent; pappus equal, white, scabrous; florets, teeth villous on the tips and back, tube short; anthers not caudate; receptacle convex, naked, punctate.
This plant is closely allied to the South American C. triplinerva, but differs in the shrubby character of the stem—the leaves also are not “ovate-lanceolate,” but lanceolate, and somewhat glandular, and like the branches puberulent—the heads are subtended by bracts, the involucral scales are not “linear lanceolate,” but ovate-oblong and sub-acute, etc. The white pappus is not short, but equal if not longer than the florets—the achenia are not “glabrous,” etc. Found at Clayton, Contra Costa County.
Collinsia Nutt.
C. divaricata Kellogg. [[Fig. 7.]]
Fig. 7.