144 BOTANY. 



leaves linear-lanceolate or lanceolate, tapering (usually) into long petioles, 

 entire or irregularly and sharply serrulate, acute; upper leaves few, 

 smaller and sessile; heads large, generally solitary; involucre mostly woolly 

 (sometimes becoming glabrous when old) ; scales in about three series, 

 lanceolate and rather obtuse; rays many and very variable in size and 

 shape (in most of my specimens the rays are sterile); disk-flowers 2" long; 

 achenia fusiform, villous ; pappus light brown. — Union Creek Pass, Colo- 

 rado, at 10,000 to 11,000 feet (472, 579). 



Aplopappus laricifolius, Gray (PI. Wright. 2, p. 80). — Shrubby, 

 low, resinous-dotted, much branched; branchlets short, leafy; leaves 

 numerous, linear or nearly so, with a slight thickening upward, 5-8" long ; 

 heads corymbose, terminating the branchlets ; scales of the involucre in two 

 series, acutish, with a brown midrib and scarious margin ; rays 3-5 and 

 4" long; disk-flowers 8-12 ; pappus roft, unequal and somewhat club-shaped; 

 achenia distinctly villous. 



This plant, from its general habit, clearly justifies Bentham and Hooker 

 in retaining it with others under the old genus Ericameria, Nutt. Professor 

 Gray, however, has indicated (Proc. Amer. Acad, viii, p. 635) that to do 

 this involves at least two other genera in confusion. — Mount Turnbull, 

 Arizona, Prof. Oscar Loew. 



Bigelovia* Wrightii, Gray. — Woody at base, smooth or roughish, 

 several thin stems rising from the base a foot or more high; leaves linear, 

 obtuse, somewhat falcate, glistening from a resinous exudation, 6-18" long; 

 heads rather small; scales of the involucre coriaceous, obtuse and regularly 

 imbricated in about four rows; disk-flowers 8-15, longer than the inner 

 scales of the involucre; style-appendages shorter than the stigmatic part; 

 achenia turbinate and hairy. — Arizona. Also the rougher var. hirtello- 

 scabra, Gray, with smaller and less resinous leaves {Linosyris Wrightii, 

 Gray, PI. Wright. 1 , p. 95). 



•"Bigelovia, DC. — Heads corymbose or cyraose-clustered, rarely paniculate, 5-30-flowered, 

 homogamous, the flowers being all perfect and with tubular corollas. Involucre Imbricated ; the scales 

 dry, chartaceous or coriaceous, chiefly destitute of foliaceous or herbaceous tips. Receptacle flat, 

 foveolale or alveolate-denticulate, rarely with a chaff-liko projection in the centre. Appendages of the 

 style-branches varying from ovate-lanceolate to subulate or filiform. Akeues narrow, terete or angular, 

 slightly if at all compressed. Pappus simple, of copious unequal capillary bristles as in Aplopappus, or 

 softer and more equal, tawny at maturity. — Herbs or under-Bhrubs, with narrow alternate leaves, and 

 mostly small heads of yellow flowers, etc." — Gray, Fl. Cal. p. 314. 



