ee 
110 Gray, Characters of some 
cibus (4-5-uncialibus,) sparsim foliatis, monocephalis; foliis 
radicalibus pinnato-partitis demum glabratis, segmentis lineari- 
bus integerrimis vel 2-3-fidis, caulinis supremis linearibus 
fere integris ; squamis involucri valde lanati biseriatis, lineari- 
bus, «qualibus; pappi paleis circ. 6, angusto-lanceolatis, 
acuminatis, corollam disci subszequantibus.— Capitulum ratione 
pl. magnum, eaque Gaillardiz aristatze semulans. 
Besides one or two genuine species of Layia, the collection 
contains a new plant of the same isomorphous group, which, 
with entirely the aspect and floral structure of Callichroa 
(Calliglossa) Douglasii, and with what may be deemed the 
rudimentary representative of the peculiar plumose hairs of 
the pappus of Layia, has a proper pappus paleaceus, that dis- 
tinguishes it from both these genera. I propose, therefore, to 
describe it under a name indicative of its principal characteris- 
tic, and which may be taken as a subgeneric appellation, in 
case that future discoveries should require, as they not very 
impossibly may, the union of Layia, Callichroa, Calliglossa, 
and even Oxyura, into one genus. 
CALLIACHYRIS. Torr. & Gray, ined. 
Composite-Seneeionidee : Subtr Heleniee: Div. Madies. 
Omnia Callichros subgen. Calliglosse, Torr. & Gr.; sed - 
pappus paleaceus; paleis 10-12, subzequalibus, lanceolato- 
ovatis, subulato-aristatis, corolla paulo brevioribus, basi pilis 
2-3 elongatis utrinque instructis. Corolle tubus pilosus - 
Herba annua vel biennis, facie omnino Callichroz = 
glossæ) Douglasii. 
C. Fremontu, Torr. & Gray, ined. — 
Mr. Fremont gathered the plant in the mountains of Cali- 
fornia, in March. 
_ The Cichoraceous plants of this collection apparently belong 
to known genera, and mostly to described species, ' with the 
ing very interesting exception. ieri 
