COMPOSITE. 367 



1. S. acaulis, Nutt. Trans. Am. Phil. Soc. vii. 334 (1840); Journ. 

 Pbilad. Aciid. vii. 33 (1834), under Chrysopsis. Woody caudex cespitose, 

 very leafy: leaves oblanceolate, or narrowly spatulate, entire, raucronate- 

 acnte, riyid, pale, very minutely scabrous: tiowering stem only a few 

 inches high, scape-like and naked, or leafy only below, bearing a single 

 head : bracts of the hemispherical involucre few, in 2 or 3 series, ovate, 

 acute, with scarious margins: rays 9 — 12: achenes silky-pubescent; 

 pappus rather scanty. — Near the sutamit of the Sierra. 



2. S. liiiearifolius, T. & G., Fl. ii. 238 (1842) ; DC. Prodr. v. 347 

 (1836), under Aplupapptis. Very leafy, 1 — I ft. high; leaves 1 in. long, 

 linear, acute, spreading, punctate and resiniferous, l-uerved: head about 

 1 in. broad, on a peduncle: rays 12—14: achenes densely white-villous; 

 pappus copious, fragile or deciduous. — Mt. Diablo towards the summit, 

 and southward. May — July. 



12. MICRONEMA, Nultall. Low and many-stemmed suff rutescen t 

 plants, with thinuish sessile entire foliage either glandular or puber- 

 uleut, but not resinous-punctate, and middle-sized or rather large heads 

 solitary or glomerate at the ends of the branches. Bracts of the 

 campanulate involucre in few ranks and not very unequal: innermost 

 thin-chartaceous or partly scarious; outer loose and foliaceous, or with 

 leafy tips. Bays usually present. Style-appendages long and filiform. 

 Achenes slender, compressed, few-nerved, soft-pubescent. 



1. M. suffi-uticosum, Nutt. Trans. Am. Phil. Soc. vii. 322 (1840). 

 Stems glandular-pubescent or puberulent, 6—8 in. high; branches very 

 leafy, the leaves broadly oblanceolate: the few heads % — % in. high; 

 involucral bracts loose and mostly foliaceous- tipped: rays 2 — 5. — Ali^ine 

 or subalpine in the Sierra Nevada from Mariposa Co. northward. 



2. M. molle, Greene, Eryth. ii. 73 (1894); Gray, Proc. Am. Acad. xvi. 

 80 (1880), under Aplopappus. Stems more slender and elongated, and 

 with the leaves pale with a scanty soft-tomentose pubescence : leaves 

 linear lanceolate: bracts of the involucre (except the linear scarious inner 

 oijes) short-lanceolate, with erect herbaceous tips. — About the head- 

 waters of the Sacramento, Fnngle. 



3. M. Greeiiei, Greene, 1. c; Gray, 1. c, uiider Aplopappus. Stems a 

 foot high, glabrous, or glandular-pubescent toward the summit: leaves 

 spatulate-oblong to oblanceolate, obtuse or mucronate: heads solitary or 

 few, % in. high ; bracts of the involucre in about 3 series, lanceolate to 

 linear, the green tips of all but the innermost elongated-subulate, 

 spreading. — Range of the preceding. 



4. M. (liscoideum, Nutt. Trans. Am. Phil. Soc. vii. 322 (1840). 

 Aplopappus Macronema, Gray. Seldom a foot high, rigidly erect, spar- 



