AsTKR. COMPOSITE. 159 



114. A. glabriusculus : lower leaves pubescent; the upper nearly gla- 

 brous, linear-lanceolate, acute ; peduncles solitary or 3-5 together, short. — 

 Xylorhiza glabriuscula, Nutt. ! I. c. p. 297. 



With the preceding, Nuttall .'—The lower leaves (about 2 inches long, 

 linear-spat ulate, are sparsely clothed with a similar pubescence as the pre- 

 ceding; and the scales of the involucre are nearly glabrous, with more mem- 

 branaceous points: the scarious margins are somewhat denticulate-ciliate in 

 both. The rays are said to be pale rose-color. 



* * * * Scales of tlce turbhuite-campamdate involute regiilarhj imbricated in 3 to 4 

 series, avate, coTvcave, somcivhat carinate {acute or obtuse) ; the innermost about the 

 length of the disk; the exterior successively shorter, but similar: alveoli of the recep- 

 tacle lacerate : appendages of the style lanceolate, acute: achenia obhng, compressed, 

 villous : pappus copious, rather longer than the corolla ; the bristles uTwqual, a few of 

 the longest often obscurely thickened toxoards the summit: stems several from a woody 

 root, simple, very leafy: leaves lanceolate, entire, somewhat rigid: heads {rather smaU) 

 in contracted coryvibs. (Eucephalus, Nutt., excl. spec. no. 2 & 4.) 



Mr. Nuttall's first species, Eucephalus elegans, is much more allied to the third, 

 E. (§ Lagatea) glaucus, than to his E. albus. The fourth, E. ericoides, is a Diplo- 

 pappus. The two plants here retained, if we except their fertile rays and narrow 

 appendages to the style, accord in habit and character with such impunctate species 

 of Galatella as G. Hauptii and G. leptophylla; both of which, it may be remarked, 

 but especially the former, have the innermost series of the pappus much more evi- 

 dently clavate than E. elegans, Nutt. 



115. A. elegans: stems minutely ptiberulent; leaves narrowly lanceolate, 

 closely sessile, pale, minutely scabrous, especially the margins, somewhat 

 3-nerved ; heads in a contracted corymb ; scales of the obovate-turbinate in- 

 volucre ovate, acute, pubescent, with ciliate-fringed margins; rays few (6 or 

 7, Nutt. to 10). — Eucephalus elegans, Nutt. ! in trans. Amer. pJiil. soc. (n. 

 ser.) 7. p. 298. 



Plains of the Oregon, and in the Blue Mountains, Nuttall! Sept.-Oct. — 

 Stems 2-3 feet high, clothed with numerous erect leaves, which are 1 to 2 

 inches long and 4 to 6 lines wide, gradually becoming smaller towards the 

 summit of the stem, with scabrous margins ; the surfaces also minutely 

 scabrous with close hairs and obscure dots. Scales of the involucre_ rigid, 

 pale, tinged with purple; the narrow scarious margins densely laciniate- 

 fringed under a lens; the inner rather shorter than the disk. " Rays pale 

 purple," (Nutt.) ; the disk-flowers 15-20. Appendages of the anthers nar- 

 rowly lanceolate. Bristles of the pappus unequal ; the inner series very 

 obscurely thickened towards the apex. 



116. A. glaucus: very smooth, pale and somewhat glaucous; stem often 

 branching above ; leaves oblong-linear, closely sessile, 1-nerved, reticu- 

 late-veined ; heads in contracted corymbs, or somewhat racemose ; scales of 

 the campanulate involucre oval, obtuse, glabrous, shghtly ciliate ; the inner- 

 most lanceolate, membranaceous, acute, as long as the disk ; " rays about 

 14," Nutt.— Euce^ihalus (§ Lagatea) glaucus, Nutt.! I. c. p. 299. 



Rocky Mountains, about lat. 42°, and towards the sources of the Platte, 

 Nuttall .'—Stem 12 to 18 inches high. Leaves 2 to 3 inches long, and 4 to 

 6 lines wide, somewhat coriaceous, both sides of a similar pale hue ; the 

 margins scarcely scabrous; the lowest narrowed at the base. Heads rather 

 smaller, and the scales of the involucre fewer tlian in the preceding, pale. 

 Ovaries minutely pubescent. Bristles of the pappus not at all thickened at 

 the apex.— Manifestly allied to the preceding : our specimens are immature, 

 with the rays undeveloped. 



