108 - Gray, Characters of some 
gustum, subalveolatum. Ligula brevis, obovata, discum vix 
excedens: corolla fl. disci e tubo gracili ibiishdibnl in 
limbo profunde 5-fido; laciniis lineari-oblongis revoluti 
Styli rami breves Linosyridis; appendiculo ovato-deltoideo 
superati. Achenium radii oblongo-obconicum vel obcompres- 
sum, villosum, pappo uniseriali paleaceo (e squamellis pluri- 
bus setaceis nunc basi, nunc fere ad apicem sæpius in pha- 
langes vario modo concretis,) achenio dimidio breviore supera- 
tum. Achenia disci, ut videtur infertilia, turbinata, glabra, 
pappo piloso uniseriali elongato instructa ; setis rigid 
denticulatis, valde inequalibus; majoribus imo sepe sub- 
complanatis et ramosis, seu potius cum minoribus nonnullis 
pl. m. concretis. — Frutex ramosissimus 1-2-pedalis, glabrius- 
culus. Folia alterna, brevia, spathulata, mucronata, vix punc- 
ticulata, integerrima, sessilia, vel in petiolum brevem attenuata. 
Capitula numerosissima, in corymbis fasciculisve aggregata 
more Solidaginis $ Euthamiz, vel Gutierreziz, sed squamte 
involucri nec ad apicem herbacez, nec forsan glutinose. 
Flores aurei. 
A. FagwowTu, Torr. & Gray. 
—. Mr. Fremont collected this plant at several places along 
"the Mohave River, &c., somewhere between California and 
the Rocky Mountains, in April. 
We must here mention a fine addition to the Oregon genus 
Pyrrocoma, which, although perfectly distinct both from 
P. carthamoides and P. radiata, belongs to the typical section 
of that genus, which it therefore helps to strengthen. It may 
be thus characterized. 
Pyrrocoma roLiosa, (Torr. & Gray, ined.): humilis, € 
radice crassa perpendiculari multicaulis, glabrata ; caulibus 
confertim foliosis ; foliis oblongo-lanceolatis (1-2-uncialibus,) 
integerrimis, mucronato-cuspidatis ; summis in squamas invo- 
lucri lanceolatas acuminatas mucronato-setigeras sensim 
transeuntibus; ligulis numerosis exsertis; corolla fl. disci- 
pappo sequilonga. 
