304 DESCRIPTIONS OF NEW SPECIES 
which the achenium differs; also to Calotheca, but wholly different in the 
involucrum and pappus. Of the true Galatella we have no species. In our 
section the flowers are larger, fewer, and scarcely corymbose. 
Galatella nemoralis, Nees. Ast. 173. Decanp. Prod., Vol. V., p. 257.8. 
rubella, smoother, with narrower leaves, a pink red flower, and a white pappus. 
Has. In sphagnose swamps, from New England-to Canada. 3. Quaker Bridge, New Jersey. 
_ Flowering in September. 
Galatella graminifolia. Hoox. Flor. Bor. Am., Vol. II., p. 15. Aster gra- 
minifolius, Pursu, Flor. Bor. Am., Vol. IL, p. 545. I have not had an op- 
portunity of examining this plant, but, from its near affinity to the preceding, 
believe it to belong to the present section. 
DIPLOPAPPUS. 
_ Diplopappus alpinus; cespitose and low; stems simple, one-flowered, villous, 
many from the same root; leaves sessile, erect, crowded, entire, oblong, apicu- 
late, scabrous, with a cartilaginous margin; upper part of the stem terminating 
in a naked peduncle; involucrum villous; scales very acute; rays numerous, 
longer than the disk. Chrysopsis alpina, Nurr. in Journ. Acad. Nat. Sci. 
Philad., Vol. VIL, p. 34. 
Has. In dry prairies along the borders of Flat-Head River, in the Rocky Mountains. Flower- 
ing in June. A very elegant and distinct alpine species, still proximately allied to D. linarizfo- 
lius, of which it has'the purple flower. Stems three to four inches high. Flowers large. Leaves 
oblong and linear-oblong, smooth, but very scabrous, rigid. Involucrum rather short and loose, of 
about three series of linear-lanceolate, appressed scales, membranaceous on the margin. Pappus 
scabrous, copious, the external crown white. Achenia silky villous, 
TOWNSENDIA. (Hooker.) 
Townsendia sericea; cespitose; leaves narrow linear, acute, scarcely half a 
line wide, canescently sericeous; capituli sessile on the caudex; scales of the 
involucrum numerous, very narrow and acuminate. —Achenium as in the rest 
of the genus, obovate, margined, and flatly compressed, sericeous, with a nu- 
merous connate series of white, silky pappus, almost plumosely barbellate, and 
remarkably attenuated above. 
