CATALOGUE. 205 



dilated, lanciniate-pinnatifid, segments lanceolate-attenuate." Grray, Proc. 

 Acad. Philad., Mar. 1863, p. 69. — Flowers yellow or orange, turning purplish 

 when dried. Leaves varying from narrowly linear to broadly lanceolate in 

 outhne, but always more or less laciniate. None of the specimens have 

 ripened achenia, but the most advanced show a very short beak, one-fourth 

 as long as the acheniam. This species and the next agree very closely in 

 foliage, size of head, color of flowers, both fresh and dried, in the young 

 achenia and in the nature of the pappus; even the "long jointed hairs" at 

 the summit of the tube of the corolla are alike'in both ; so that the involu- 

 cre, of unequal scales in one species and equal in the other, and the longer 

 or shorter beak of the mature achenium, seem to be the only remaining 

 points of distinction. When both species shall be studied from the living 

 plant with ripened achenia it is quite possible that even these differences will 

 disappear. Colorado, (354 Hall & Harbour, in part.) From the foot-hills 

 near Carson City to the Uintas ; 5-7,500 feet elevation ; May-Septem- 

 ber. (718.) 



424 Parry, 356 Hall & Harbour, and 361 Yasey belong to Var. dasy- 

 cephalus, T. & G. " Involucre woolly, at least when young, the exterior scales 

 spreading; leaves and scape often somewhat pubescent; receptacle some- 

 times, but not always, furnished with a few linear-acuminate chaffy scales 

 intermixed among the flowers." — Arctic America to Oregon and Colorado. 



Maceoeehynchus tkoximoides, T. & G. Perennial, smooth and some- 

 what glaucous; leaves 4-10' long, 3-9" wide, linear-lanceolate or linear-spat- 

 ulate, acuminate or obtuse and slightly apiculate, entire or laciniately pinnati- 

 fid ; scapes 4'-2° high ; involucre 6-10" long, the scales nearly equal, 

 lanceolate from a broad base ; achenia 10-ribbed, at first shorter than the 

 pappus and scarcely beaked, at length produced into a slender beak two- 

 thirds as long as the achenium proper, and with it slightly or considerably 

 longer than the pappus. — Flowers orange-color, fading to purplish. The 

 pappus is variable in fineness, one of the best-marked specimens, with ros- 

 trate achenia, having rather coarse and evidently flattened bristles. To this 

 species Dr. Gray has already referred Troximon roseum and T. parviflorum, 

 and it is not at all improbable that T. glaucum will eventually follow them. 

 Mountains of Colorado, (QQ & 67 Parry, 355 Hall & Harbour, 359 Vasey,) 

 to California, Oregon, and British America ; Virginia City, (Bloomer.) 



