J42 BOTANY. 



this species, I can recognize var. Mspida, Gray, which is best marked, with 

 its leaves lanceolate and acute, or spatulate, oblong and obtuse, from f-1' 

 long; plant hispid, with short, stiffish, and more or less dense hairs. (555, 

 464, from Colorado, 792 from Arizona, and an unnumbered one collected by 

 Loew in New Mexico; var. foliosa, Watson, more leafy, with leaves obovate- 

 spatulate, 1' long, and more or less canescent, running into C. canescens, T. 

 & G. (791, 182, from Arizona, and 552 from Colorado). Canescent form 

 (724) from Southern Arizona is well marked.) 



Var. Rutteri. — Stem erect, densely leafy; leaves 1-1 J' long, lanceolate, 

 acute, densely covered with long, white, silky hairs ; leaves gradually reduced 

 to bracts under the involucre; ray-flowers §' long, 1-1 £" wide. — Sanoita 

 Valley, Arizona (662). This may be reduced to 0. villosa var. canescens, 

 which is apparently its nearest ally, yet it is quite different from any speci- 

 mens of the latter that I have in my collection. 



Aplopappus* Maceonema, Gray (Proc. Amer. Acad. 6, p. 542). — Twin 

 Lakes, Colorado, 9-10,000 feet altitude (451). 



"Aplopappus cervinus, Watson (Amer. Naturalist, 7, p. 301). — Low 

 (6 inches high), suffruticose, resinous-scabrous, the short herbaceous stems 

 leafy to the top; leaves oblong-lanceolate, 4-6" long, shortly cuspidate, 

 attenuate to the base, entire, sub-scabrous, 3-nerved; heads 3-4" long, in 

 corymbs of 3-5, terminating the branches; outer involucral scales linear, 

 acuminate, with setaceous, spreading tips, the inner chartaceous, acutish, 

 with scarious, lacerated margins, erect, nearly equalling the pappus; rays 

 few, narrow, and but little exceeding the disk; style exserted; achenia 

 linear, pubescent. — Nearest to A. suffruticosus, Gray, Antelope Canon.'' 

 Utah. — Watson, I. c. — Plate VI. 1. Branch, natural size 2. Inner invo- 

 lucral scale. 3. Outer involucral scale. 4. Disk-flower. 5. Style and 

 stigma. 6. Anther. All except the branch enlarged. 



Aplopappus Fremonth, Gray (Jour. Bost. Nat. Hist. Soc. v. 5). — 

 Glabrous, 1° high; corymbosely branched above, with the leafy branches 



* Aplopappus, Cass.— Heads several- to many-flowered, heterogamous with fertile rays, or homo- 

 gamous and destitute of rays. Involucre imbricated, in 2-several rows; scales with mostly acute and 

 often somewhat spreading tips. Receptacle flat or nearly so, foveolate or alveolate. Appendages of the 

 style usually elongated-subulate. Acheuia variable in shape. Pappus simple, of copious, unequal, rigid, 

 capillary bristles, which are more or less rough.— Herbs or under-shrnbs, with yellow flowers, and 

 panpus tawny or reddish, not often white.— (After Gray, PL Cal. vol. 1, p. 310.) 



