312 COMPOSITE. Aplopappus. 



hemispherical involucre rigid, linear-spatulate or oblong-lanceolate, with mostly 

 obtuse but rnucronate herbaceous tips, appressed, in 3 or 4 series, the outermost 

 commonly short : rays 8 to 16, narrow : disk-flowers numerous : ovaries more or less 

 pubescent : akenes rarely pubescent : pappus tawny or reddish, rather rigid. 

 Homopappus paniculatus, Nutt. 1. c. Pi/rrocoma paniculata, Torr. & Gray, 1. c. 



Var. virgatus, Gray, 1. c. Slender : heads much smaller but broadish, race- 

 mose or spicate. 



Var. stenocephalus, Gray. Slender : larger stems branching and bearing 

 paniculate heads : involucre narrow-oblong or cylindraceous, 4 or 5 lines in length, 

 rather few-flowered : rays 7 to 10 : immature akenes silky-pubescent : pappus 

 whitish. 



Eastern slopes of the Sierra Nevada ; Carson, Anderson ; a virgate form, to which also belongs 

 Hall's No. 256 of Oregon coll. (referred to A. lanceolatus), only that has very silky-pubescent 

 akenes. Bridgeport, Mono Co., Bolandcr ; the var. virgatus. Sierra Co., Lcmmon ; the var. 

 stenocephalus. A. tenuicaulis, Eaton, Bot. King., is another form, similar to the last variety, 

 but soft-hairy when young, with broader involucre of less rigid scales : it has the same silky- 

 pubescent ovaries. 



6. A. Whitney i, Gray, 1. c. Herbaceous, slightly roughish-pubescent and glu- 

 tinous : stems numerous and one or two feet high from a thickish rootstock, equably 

 leafy to the summit : cauline leaves oblong (an inch long), thin-coriaceous, sharply 

 dentate with rigid teeth, partly clasping, minutely reticulate-veiny : heads panicu- 

 late-clustered and mostly leafy-bracteate : involucre oblong-campanulate 20 - 25- 

 flowered ; its scales narrowly linear-lanceolate, acute, almost glabrous, between 

 chartaceous and coriaceous, mostly destitute of herbaceous tips, imbricated in 3 or 4 

 series, appressed, the outer successively shorter : rays 6 to 8, small, little surpassing 

 the disk : akenes glabrous, oblong-linear, striate : pappus copious, tawny or reddish, 

 fine but rigid. 



Open woods of the Sierra Nevada, Mono trail and Sonora Pass, alt. 9,000 feet, Bolander. 

 Heads half an inch long. Disk-corollas narrow and merely 5-toothed as in Pi/rrocoma ; but invo- 

 lucral scales narrow and thin. Style-appendages subulate-filiform. A good link between the 

 sections Pyrrocoma and Ericameria. 



7. A. cuiieatus, Gray. Shrub low and intricately branched, glabrous, at length 

 glutinous with resinous exudation : branchlets very leafy : leaves small (merely 

 half an inch long), thick, cuneate or obovate-spatnlate with a narrowed base, and a 

 broad truncate retuse or emarginate apex, conspicuously resinous-punctate, one- 

 nerved, veinless, entire : heads corymbose at the summit of the branches, about 

 24-llowered : involucre turbinate, shorter than the disk ; its scales regularly imbri- 

 cated in several series, lanceolate, coriaceo -chartaceous, with somewhat scarious mar- 

 gins and tip, carinate one-nerved ; the outer successively shorter : rays about 3, not 

 exceeding the disk : style-appendages lanceolate-subulate, about the length of the 

 stigmatic portion : akenes linear-oblong, compressed, sparsely hirsute : pappus rather 

 soft, scarcely tawny. Proc. Am. Acad. viii. 635. 



Bear Valley, Placer Co. in the Sierra Nevada, alt. 4,500 feet, Sept., Kellogg and Bolander. 

 Plant exhaling a creosotic balsamic odor, apparently a low and matted bush or undershrub. 

 Head of the Ericameria section, somewhat larger and thicker than those of A. ericoides, the invo- 

 lucral scales more numerous and not ciliate ; the outer ones decreasing into very short and loose 

 squarrose bracts on the peduncle, none of them with foliaceous tips. In one (abnormal) head all 

 the flowers were furnished with five or fewer linear or spatulate external accessory divisions, borne 

 on the middle of the tube. 



8. A. pinifolins, Gray. Shrub 2 to 4 feet high, erect, with fastigiate branches 

 excessively leafy, slightly pubescent when young, glabrate, hardly glutinous : leaves 

 crowded, filiform-linear or acerose, cuspidate-acute, an inch long, somewhat punctate, 

 the fascicled ones when present very much shorter : heads solitary and sessile at the 

 summit of the branchlets, mostly exceeded by the closely involucrate uppermost leaves, 

 25 - 30-flowered : involucre campanulate ; its scales appressed, oblong or broadly 

 lanceolate, acuminate, coriaceous, with somewhat scarious minutely villous-ciliate 



