260 PITTONIA. 
shortly branched from all the axils and of strict habit; ter- 
ete stems of a quite dark red-purple, seabrous below, glab- 
rous toward the summit: rather broadly lanceolate leaves 
ascending, sessile by an auriculate base, the auricles over- 
lapping the pair thus appearing as if connate-perfoliate 
though actually quite distinct, the margins closely but 
somewhat irregularly serrate-toothed: heads large, short-pe- 
duncled, nodding even in flower, nearly hemispherical; 
outer involucre inconspicuous, the bracts hardly equalling 
those of the inner set: rays neither numerous nor large, 
though perhaps always present: disk-corollas with short and 
subglobose limb about a third as long as the tube, the an- 
thers conspicuously exserted: achenes elongated and of lin- 
ear-cuneiform outline, 4-angled and 4-awned, the retrorse 
aculeole, or rather hairs, all slender, about equally so upon 
the awns and down the four angles of the nevertheless much 
compressed chestnut-brown and striate achene; the not very 
unequal and rather slender yellow awns of one-third the 
length of the achene. 
A species of quite peculiar aspect among the others, in 
some ways suggestive of true B. cernua, but the pairs of as- 
cending leaves with broad overlapping auricles, and the 
ascending or suberect short monocephalous branches bring 
it also into strong contrast with that species. It is known 
to me only in n. 457 of the Herb. Canad. Surv., and was col- 
lected by Mr. John Macoun, near New Westminster, B. C., 
28 Aug. 1893. Mr. Wiegand i included it in his B. cernua 
elliptica. 
“B. Lepropopa. Stems widely and dichotomously branch- 
ing, probably at least 3 or 4 feet high, scabrous throughout 
though sparsely so: leaves lanceolate, serrate with remote 
short rather salient teeth, acute or acuminate, 3 to 4 inches 
