22 POLYGON ACE^. Eriogonum. 



= ^ = Fed uncle leafij-hracteate in the middle, hearing a solitary involucre. 



13. E. Kelloggii, Gray. Low and very slender, villous tonientose : leaves ob- 

 lanceolate, li to 4 lines long, scarcely petiolate : peduncles 2 to 4 inches high, with 

 a central whorl of 3 to 5 foliaceous bracts and bearing a single naked rather large 

 strongly-toothed involucre (2 lines long) : flowers rose-colored or whitish, li to 2^- 

 lines long. — Proc. Am. Acad. viii. 293. 



In fir- woods on Red Mountain, Mendocino County, Kellogg k Harford. 



* * Involucres unequally A-lobed, mostly small, pedicellate in di- or trichotomoiis 

 cymes or panicles (or sometimes sessile in the forlcs^ : perianth not long-atten- 

 uate at base. Mostly leafy annuals : filaments and ovary glabrous. — 

 (§ FoLiosA, Henth.) 



14. E. spergulinum, Gray. Tory slender, 3 inches to 2 feet high, diffusely 

 brancheil usually from the base, slightly glandular-hispid or nearly glabrous : lower 

 leaves scattered near the base, thin, linear- oblanceolate, i to 2 inches long, more 

 or less hirsute, the margin somewhat revolute ; bracts similar : pedicels very slen- 

 der, 3 to 6 lines long, spreading : involucres turbinate, \ line long, deeply 4-cleft, 

 glabrous, 1 - 2-flowered : bractlets none : flowers exserted, rose-colored, ^ to 1 line 

 long, slightly glandular-puberulent at base ; segments cuneate- oblong, the outer 

 obtuse or refuse, the inner erosely 3-toothed : akeiie obovoid or lenticular. — Proc. 

 Am. Acad. vii. 389 ; Torr. & Gray, 1. c. 189. 



In the Sierra Nevada at 6,000 to 10,000 feet altitude, frequent, from Sierra County (Lemmon) to 

 Tulare County, Rotlirock. 



15. E. hirtiflorum, Gray. Diff"usely branched, G inches high or less, somewhat 

 glandular-puht'rulent and viscid : bracts hispid, oblong, 3 lines long or less, acutish : 

 involucres turbinate, half a line long or less, 4-parted, on slender erect or nodding 

 pedicels 1 to 3 lines long, or in the forks often nearly sessile : flowers 3 to 5, very 

 hirsute, yellowish tinged with red, | line long ; segments oblong, obtuse : akene 

 triangular, exserted. — Watson, Proc. Am. Acad. xii. 259. 



Collected by Dr. Gray, in 1872, and by Hooker k Gray in 1877, in Tuolumne County, at 

 2,500 to 5,000 feet altitude. 



E. PHARXACF.oiDES, Torrey in Sitgreaves, Rep. 167, t. 11. Tall and hoary-tomentose, leafy 

 and rather sparingly branched : leaves linear-oblanceolate, smoother above, with revolute margin, 

 an inch long or more : involucres on elongated pedicels, turbinate, deeply 6-8-cleft, 1 to 1^ lines 

 long, 8- 12-flowered : flowers glabrous, whitish, aline long; outer segments ovate, at length 

 bigibbous at base, the inner linear-oblong, retuse. — Fort Whipple, Arizona {Palnur), and east- 

 ward to New Mexico. 



E. Abertianvm, Ton-ey, and E. villiflorum. Gray, may also i)erhaps be found on the south- 

 eastern borders of the State, both villous species with deeply cleft involucres. The first an erect 

 branching annual, with ovate or subcordate leaves, the upper lanceolate or linear ; involucres 

 4-8-cleft, 14 lines long, scattered along the branches; flowers rose-colored, glabrous, the outer 

 segments round-cordate, becoming 2 lines long, the inner linear-oblong : E. Arizona and New 

 Mexico. The second is a dwarf cespitose perennial, with small oblanceolate leaves crowded on the 

 very short branches of the thick caudex, and each branch terminated by a slender peduncle (an 

 inch long) bearing a loose cymose head ; involucres 6-cleft, 2 lines long : flowers silky within and 

 without, a line long, G-cleft to the middle ; the lobes oblong and nearly equal : S. Utah, Siler, 

 Parry. 



§ 2. Involucres mostly campa7iulate or short-turhinafe, small, not angled and very 

 rarely obscurely nen^ed, with 5 rounded erect often memhranously ')nar- 

 gined teeth, pedicellate in diffuse repeatedly di- or trichotomons cymose 

 toiibf Is or jtf inch's, lis u filly more or less deflexed or spreading : bracts ter- 

 mite, iiiif fnliurciis. s III < ill and mostly triangular and rigid : perianth not 

 attenuate at base. Slender annuals (the Calif ornian species), with radical 

 and rounded leaves : inflorescence and involucres usually glabrous : fila- 

 ments and ovaries glabrotcs. — Ganysma, Watson. 



