Eriogonum. POLYGOXACE^E. 27 



long, obtuse or acute, at base rounded or cordate or rarely cuneate, the margin often 

 undulate and upper surface becoming glabrate ; petiole often short and margined : 

 peduncles erect or ascending, 6 to 20 inches high and very stout, not fistulous : 

 bracts triangular : heads large and dense, often compound, \ to 1 inch in diameter, 

 solitary and terminal or few in a simple or nearly simple umbel : involucres tomen- 

 tose, 2 lines long : flowers glabrous, light rose-color, 1| lines long. Torr. & Gray, 

 1. c. 166. E. oblongifolium, Benth. ; Torr. & Gray, 1. c. 167, the form with nar- 

 rower and more cuneate leaves. 



On the rocky sea-coast, from San Simeon Bay (Palmer) to Humholdt County. 



32. E. nudum, Dougl. More slender, sparingly leafy at base, mostly glabrous 

 above : leaves broadly ovate or oblong, obtuse, ^ to 2 inches long, cordate or abruptly 

 cuneate at base, on slender petioles, undulate, densely tomentose beneath, becoming 

 glabrate above : peduncle (h'stulous and sometimes inflated) and sparingly branched 

 panicle a foot or two high, smooth : involucres 2 or 3 lines long, glabrous or nearly 

 so, usually 3 to 6 in each cluster : flowers glabrous or sometimes more or less vil- 

 lous, 1 to 1 lines long, white or reddish, sometimes sulphur-yellow. Torr. & 

 Gray, 1. c. 167. E. nudum & auriculatum, Benth. in DC. Prodr. xiv. 13. 



Var. pauciflorum, Watson. Involucres solitary or occasionally in pairs, much 

 scattered : peduncle often inflated. Proc. Am. Acad. xii. 264. 



Var. oblongifolium, Watson, 1. c. Often somewhat tomentose throughout : 

 leaves oblong, acute or obtuse, an inch or two long, narrowed to a long slender 

 petiole : bracts occasionally foliaceous : perianth usually somewhat pubescent, at 

 least on the inner lobes. E. affine, Benth. 1. c. 



A very variable species, ranging from Washington Territory to Southern California, the last 

 variety more common from Mendocino County and the Upper Sacramento northward. 



33. E. elatum, Dougl. Leaves villous-pubescent or somewhat tomentose be- 

 neath, ovate-oblong to lanceolate, acute, 2 to 6 inches long and on elongated 

 petioles, abruptly cuneate or rarely subcordate at base : peduncle (fistulous and 

 sometimes inflated) and rigid panicle 1 to 3 feet high, smooth and glaucous: 

 involucres smooth, in clusters of 2 to 5, usually rather broadly turbinate and 

 obscurely nerved, 2 lines long : flowers somewhat villous, greenish white or rose- 

 colored, 1 J lines long. Torr. & Gray, 1. c. 168. 



Dry mountain-slopes and valleys, from Washington Territory to Western Nevada ; abundant 

 on plains near Yreka, E. L. Greene. 



- - Stout woody perennials, the stems virgately branched and with numerous 

 short-petioled often fascicled leaves : bracts mostly foliaceous : involucres capi- 

 tate, or fascicled and the clusters more or less closely cymose^iimbellate. 

 ( FASCICULATA, Benth.) 



34. E. cinereum, Benth. Shrubby, 3 to 5 feet high in dense clumps, hoary- 

 tomentose throughout : leaves orbicular to oblong, 6 to 9 lines long, on very short 

 petioles, obtuse, undulate, strongly nerved : peduncles elongated, sparingly dichot- 

 omous, bearing few rather open heads : bracts short : involucres 2 lines long : 

 flowers very villous, rose-colored, 1| lines long or less. Bot. Sulph. 45 & DC. 

 Prodr. xiv. 8; Torr. & Gray, 1. c. 168. 



On the sea-shore, Southern California, at San Pedro (Hinds) and Santa Monica, Brewer. 



35. E. parvifolium, Smith. Shrubby, 3 feet high, more or less white-tomen- 

 tose throughout : leaves broadly ovate to oblong, 4 to 9 lines long, acute, abruptly 

 narrowed at base to a very short petiole, revolute and undulate on the margin, 

 becoming glabrate above : peduncles usually rather short, bearing a few close heads : 

 lower bracts conspicuous, the upper smaller : tomentose involucres and glabrous 

 rose-colored flowers about 1J lines long. Benth. 1. c. 12 ; Torr. & Gray, 1. c. 169. 



Near the sea coast from Monterey to Santa Barbara ; Santa Lucia Mountains, Palmer. 



