382 COMPOSITE. Actinella. 



pappus 5-7, broadly ovate, lipped with slender awns. — Nutt. ! gen. 2. p. 

 173, cy in trans. Amer. 2)Ml. soc. I. c. Actinea acaulis, Spreng. syst. 3. p. 

 574; Torr. ! in ann. lye. NewYork, 2. ]). 213. Galardia acaulis, Pursli! 

 fl. 2. p. 743. Cephalophora (Actinella) acaulis, DC. prodr. 5. jj. 663. 



Dry chalky soil, along the ujjper part of the Missouri & Platte Rivers, 

 Bradhury, Nullall ! Dr. James ! — Plant growing in very dense tufts. Leaves 

 1-2 inches long, the silky pubescence dense and appressed. Scapes 3-6 

 inches long. Heads three-fourths of an inch in diameter, including the 10-12 

 cuneate-oblong yellow rays. Proper tube of the disk-corolla almost none. 

 Receptacle hemispherical. Achenia very villous. Pappus nearly equal- 

 ling the corolla of the disk. 



3. A. Torrcyana (Nutt.) : densely csespitose ; scapes, involucre, and axils 

 of the leaves very tomentose -, leaves clustered, narrowly linear, obtuse, 

 sparsely hairy, strongly punctate with blackish dots, usually as long as the 

 scape; scales of the involucre oblong-ovate, with scarious margins, in aboirt 

 2 series ; scales of the pappus 5-7, ovate, nearly awnless. — Null. ! in trans. 

 Amer. phil. soc. I. c., excl. syn. 



Shelving rocks on the lofty hills or mountains of the Upper Platte called 

 the "Three Butes," Nuttall ! June. — Plant 2-3 inches high. Leaves a 

 line wide, rigid. Heads rather smaller than iu the preceding. Rays rather 

 large, 8-10. Receptacle conical. 



4. A. lanata (Nutt.! 1. c.) : densely cacspitose, very woolly throughout; 

 leaves clustered, linear-oblanceolate, the primary oblong-spatulate and some- 

 what glabrous when old, nearly impunctate ; scales of the involucre oblong- 

 lanceolate, in about 3 series ; the inner with scarious margins ; scales of the 

 paj)pus 5-6, ovate, tipped with short awns. — Actinea integrifolia, Torr. in 

 ann. lye. New York, I. c. ? not of Kunth ! 



With the preceding, which it closely resembles, Nuttall! (Rocky Moun- 

 tains in about lat. 41°, Dr. Jai>ies !) June. — The specimen of A. integrifo- 

 lia ? Torr. I. c. is so imperfect that we cannot very confidently refer it to 

 the present species ; but it certainly is not the same with the foregoing. 



5. A. glabra (Nutt. I 1. c.) : densely ca?sphose ; leaves narrowly linear or 

 linear-spatulate, nearly glabrous when old, impressed punctate ; the dilated 

 scarious bases imbricated on the slender branches of the caudex ; scape 

 naked or with a single leaf; scales of the involucre ovate, obtuse, woolly, in 

 about 2 series ; scales of the pappus 5, oblong-ovate, lacerate-loothed, nearly 

 awnless, scarcely more than half the length of the corolla. 



Near the Shawnee villages on the Missouri, Nuttall! On the Platte? 

 Dr. James! — Plant 3-5 inches high. Heads smaller than in A. acaulis. 

 Pappus shorter than in any of the preceding species. 



6. A. scaposa (Nutt. ! 1. c.) : villous ; stems leafless, strict, simple, bear- 

 ing a single head; leaves radical, linear-lanceolate, attenuate at the base, 

 entire, or some of them pinnatifid with a few acute lobes ; exterior scales of 

 the involucre obtuse, appressed, shorter than the disk ; scales of the pappus 

 oval, abruptly awned, a little shorter than the corolla. DC. — Cephalophora 

 (Actinella) scaposa, DC. prodr. 5. p. 663. 



13. linearis (Nutt.! 1. c.) : cinereous-pubescent, scarcely villous; scapes 

 several from a slender branching caudex, on which the narrowly linear en- 

 tire and punctate leaves are closely imbricated ; scales of the involucre line- 

 ar-oblong, in about 2 series, silky-villous ; achenia sparsely villous. 



Texas, in the eastern districts, Berlandier. (3. Texas, Dr. Riddell ! — 

 The scapes, in the plant described by De Candolle, are 8-12 inches long; 

 the leaves 2-3 inches in length and 2-3 lines in breadth, acute ; the rays 

 4-nerved and 3-toothed. Our plant agrees with this description, except that 

 the leaves are narrower, less hairy, &c. ; and the involucre is nearly as long 



