polygone.t:. 149 



Hues lonj?, white or rose-colored : acliene glabroiTS. -From Monterey 

 southward uear the coast. 



27. E. trachygrouum, Torr. iu DO. Prodr. xiv. 15 (1856). Woody 

 stems erect, rather sleuder, 6 —10 in. high, densely clothed with the 

 living and dead leaves ; these narrowly oblanceolate, 1 in. long, narrowed 

 to a sleuder petiole, the dense tomeutum persistent on both faces, as on 

 the stems and peduncles : panicle short-peduncled, 3 — 5 in. high, twice 

 or thrice dichotomous ; lower involucres scattered, upper more con- 

 densed, sessile, campanulate-tubular, prominently but obtusely angled, 

 glabrous except the woolly and obtusely toothed orifice : sepals white 

 with a green midrib, the inner longer and somewhat narrower than the 

 outer : ovary pubescent on the angles. — Abundant in dry gravel beds 

 along Putah Creek, Jepaon, P. S. Woolsey, and elsewhere in like situations 

 up and down the valley of the Sacramento, and southward in the 

 interior. Entirely distinct in habit, foliage, etc. from the Texano-New- 

 Mexican E. Wrighiii with which it has been confounded. Sept., Oct. 



28. E. Wrightii, Torr. 1. c. var. snbscaposuin, Wats. Woody and 

 leafj' stems very short and cespitose : leaves I4 — l'^ ^^- long, oblong, 

 obtuse, short-petioled, not persistent on the old branchlets : peduncles 

 naked and scapiform, the involucres spicate on a few wide-spread 

 cymose branches, or fewer and capitate-congested, tomentose throughout, 

 the teeth rigid, acute : sepals less unequal than in the last, the midvein 

 red. — High Sierra from near Donuer Lake southward. Sept., Oct. 



29. E. saxatile, Wats. Proc. Am. Acad. xii. 267 (1878). Oaudex stout- 

 ish, sparingly branched, very leafy, }<2 — 1 ft. high : leaves obovate, 

 obtuse, 6 — 8 lines broad, 1 in. long, cuneate at base, short-petioled, 

 densely tomentose on both sides : branches of the inflorescence short, 

 spreading : bracts subfoliaceous, triangular or oblong and acute : invo- 

 lucres 11.3 — 2 lines long ; teeth acute : fl. rose-colored, 2 lines long, the 

 sepals all spatulate-oblong and carinate, about equal, the inner appressed 

 to the achene. — In Reliz Canon, Monterey Co., Hichtiau, and Santa 

 Lucia Mts., Palmer. 



■n- -M- AiDiualti irilli leaves )noslU/ hasal ami rosulale. 

 = Pnvolucres 2 lines long, Inhvlar. 



30. E. virg-atuiii, Benth. in DC. Prodr. xiv. 16 (1856). Usually white- 

 tomentose throughout : leaves oblong, 1 in. long on sleuder petioles : 

 peduncle simple, or with only a few erect virgate branches, 1— 2^3 ft. 

 high, the involucres remote, the 5 teeth very short : perianth 1 line long, 

 buff or yellow ; outer sepals broadly obovate, cuneately narrowed at 

 base, the inner about as long, spatulate-oblong : achene with a minutely 

 puberulent rather slender beak. Near Monterey, Harlweg; towards the 



