NOVITATES OCCIDENTALES. 7 
toothed: flowering branches repeatedly dichotomous, with 
heads (pedicellate) in all the forks: involucels small, of very 
unequal foliaceous entire or toothed bractlets: petals salmon- 
color; anthers yellow; sterile flowers on long pedicels: fruit 
strongly tuberculate, the tubercles of the upper part ending 
in a broadly subulate incurved point. 
Deeply imbedded, as to the root and main stem, in loose 
rocks, at the summit of Mt. Diablo; only a single plant 
found; allied to S. tuberosa, but root and foliage altogether 
different, as also the whole habit. 
Senecio Blochmane. Tufted perennial; stems erect, 3 
or 4 feet high, simple and leafy up to the fastigiate-corym- 
bose summit; herbage glabrous, heavy-scented: leaves 
linear-filiform, entire, 2 to 4 inches long, recurved or deflexed: 
heads cylindrical, 4 inch high or more; rays 5 to 8, light 
yellow: achenes hoary with a short strigulose pubescence; 
pappus copious, very white and soft. 
Plentiful along the Santa Maria River, San Luis Obispo 
Co., Calif, Mrs. Blochman; flowering in October and 
November. 
Microseris indivisa. Stoutish, the many scapes 1 to 14 
feet high: leaves ascending, 6 inches long, mostly oblan- 
ceolate and entire, some of the earlier coarsely and saliently 
toothed: heads very large (the flowers and achenes more 
than 100): outer row of achenes silvery-silky, the others 
glabrous, chestnut-brown, all about 2 lines long, bearing 
& pappus 5 lines long, the bristles 5, whitish, barbellulate and 
persistent, the base dilated into a small triangular-lanceolate 
palea. 
Plains of the Sacramento, about Elmira, Vacaville, etc.; 
nearest M. aphantocarpha, a species of the seaboard, with 
more slender, shorter, scarcely even scabrous, fragile and 
deciduous pappus of mostly 2 or 3 bristles, (these with broadly 
ovate paleaceous base), and leaves always deeply pinnatifid. 
