POLYGONE.E. 151 



unless intermediate forms are found. July -Sept. 



34. E. grracile, Benth. Bot. Sulph. 46 (1844) & DO. Prodr. 1. c. Slender, 

 1 — 2 ft. high, usually white-woolly throughout : leaves rosiilate or 

 scattered, ovate, oblong or oblanceolate, tomentose on both faces : 

 panicle of few or many usually rather strict and virgate very slender 

 branches : involucres many-flowered, turbinate, the 5 teeth stout, promi- 

 nent, acutish : fl. white, rose-color or yellowish, % line long ; outer 

 sepals obovate, inner oblong. In the interior, from the Sacramento 

 valley soil th ward ; apt to be confounded with E. virgaium if one over- 

 look the small size of the flowers and the teeth of the involucre. As 

 here perhaps too loosely defined it embraces E. leucoladoii, Benth., and 

 E. acetoselloides, Torr., both of which may yet be found to deserve 

 restoration. 



35. E. cithariforme, Wats. Proc. Am. Acad, xxiii. 266 (1888). Pros- 

 trate or procumbent, branching from the base, mostly glabrous except 

 the floccose-wooUy lower face of the leaves ; these 8—4 in. long, dilated 

 at summit, the rounded base abruptly contracted to a winged petiole, 

 margin undulate : branches 1 ft. long, many times forked, the lower 

 bracts foliaceous, the upper triangular : involucres glabrous, broadly 

 turbinate, 1— IJ^ lines long, with broad teeth : fl. rose-color, 1 line long; 

 sepals spatulate-obovate. — In San Luis Obispo Co., Lemmon. 



36. E. Pluiiiatella, Dur. & Hilg. Pac. R. Kep. v. 14. t. 16 (1855). 

 Slender, 3 — 8 in. high : leaves rosulate very near the base of the stem, 

 orbiciilar, h^ i^- broad, on slender petioles : panicle diffusely and intri- 

 cately branched, the branchlets (like the leaves) grayish-tomentose : 

 involucres very short (3^2 ^^^^ or even less) : fl. few, yellow, rose-color or 

 white, -^4^ line long or more ; sepals broadly ovate-cuneiform and refuse, 

 slightly unequal. — A Nevada species, common along the eastern base of 

 the Sierra, but first obtained in Kern Co., Calif., on Pose Creek. 



* * ■«• Annuals; i nvolucres pedicellate in diffuse di- or trichotunwus cyuwse 



umJieh or panicles; perianth not attenuate at base; filaments 



glabrous. — Subgenus Ganysma, Wats. 



H— Nodes of the panicle leafy. 



37. E. aiigulosuiii, Benth. Trans. Linn. Soc. xvii. 406. t. 18 (1837). 

 Grayish-tomentose, 6 — 18 in. high, loosely and widely branching from 

 near the base, the branches 4 — 6-angled : lowest leaves ovate or rounded, 

 cuneate or somewhat cordate at base, obtuse, often undulate, ^g — 1 ^^• 

 long, on rather short petioles ; upper oblong or lanceolate, subsessile : 

 pedicels of the involucres I4- II4 in. long, filiform : involucre hemi- 

 spherical, 1 ~2 lines broad, many-flowered, smooth or glandular : bract- 

 lets mostly dilated and rather firm : fl. rose-color, purplish, or even 

 greenish-white, ^j line long, not quite glabrous ; outer sepals ovate, 



