AND GENERA OF PLANTS. 379 
Actinella scaposa. (3. * linearis; slenderly villous; leaves narrow-linear, sub- 
lanceolate, much attenuated below, all entire, with dark punctures; scape very 
long and slender, with one capitulum; sepals linear-oblong, obtuse, twenty or 
more in two series. , 
Has. Texas. (Professor Riddell.) Rays about twelve, twice as long as the disk; pappus five- 
_ leaved, white and thinly membranaceous, nerveless, oblong, abruptly apiculate ; achenium slenderly 
villous. Receptacle convex. Probably a distinct species, as the leaves are never apparently pin- 
natifid, as in the true 42. scaposa. fee 
Actinella * glabra; leaves narrow-linear, sublanceolate, attenuated below, 
broadly sheathing and ciliate at base, covered with dark, impressed punctures; 
Scape one-leaved, one-flowered; involucrum campanulate, biserial, lanuginous, 
sepals about twelve, ovate, obtuse; receptacle conic. 
Has. Missouri, (near the Shawnee villages.) Ihave only seen a single specimen, after flowering. 
It appears to be much allied to the preceding species, but with a different involucrum and recep- 
tacle. Root perennial, with persistent vestiges of leaves, growing probably in tufts. Scape with a 
slender linear leaf about half way up to the flower. 
Actinella * Torreyana; densely cespitose; leaves linear, punctate, sparsely 
pilose, but green, and darkly punctate, with a callous, rather obtuse point; 
axills, scape and involucrum very loosely lanuginous; sepals oblong-ovate, ob- 
tuse, with membranaceous margins; pappus five-leaved, hyaline, and slenderly 
apiculate; receptacle conic. Actinea integrifolia; Torrey, in Annals Lyceum 
Hist. Nat. N. York., Vol. IL., p. 213, non Kuwru. 
Has. On the lofty hills or mountains, called the «* Three Butes ”’ of the upper Platte, on shelving 
rocks. Flowering in June. An alpine species of very dwarf stature, two to three inches high. 
Rays ten or twelve deeply three-toothed, strongly veined, rather wide and large. 
Actinella * lanata; densely cespitose; leaves linear, subacute, softly and co- 
piously pilose, as well as the axills; scape and involucrum nearly impunctate; 
the primary leaves oblong-spathulate, coriaceous; outer sepals lanceolate, or 
lanceolate-ovate, without membranaceous margins; pappus five-leaved, scales 
lanceolate, with long and distinct awns; receptacle conic. ‘ 
Has. With the above, which it very closely resembles, but is much more pubescent, with longer 
awns to the pappus and.a different involucrum. 
+ + Caulescent; leaves pinnatifid, filiform. 
Actinella Richardsoni; caulescent, nearly smooth; leaves alternate, petiolate, 
pinnatifid ; segments few, filiform-linear, rigid, punctate; branches mostly one- 
