.16 [Feb. 



lucres campanulate, very small, the teeth obtuse; flowers smooth, small and 

 yellow, dioicoLis ? 



Hab. In the Rocky Mountains of Oregon. (T. Kultall.) 



In aspect nearly allied to E. campanu/utum, but with rather longer and nar- 

 rower leaves, and the involucres most of them sessile. 



E. '^'alburn. Nearly stemless, with a woody caudex ; leaves very whitely to- 

 mentose, spathulate-obovate, obtuse, usually longer than the petiole ; bractes 

 mi-nute, appressed ; umbel nearly simple, of few rays; involucrum tomentose, 

 angular, with shortish teeth; flowers numerous, smooth. 



Hab. Rocky Mountains of Oregon (Nuttall.) 



E. *rosniarinifolium. Shrubby and much branched, sm.ooth or somewhat pu- 

 bescent; leaves clustered, nearly linear, revolute on the margin, slightly tomen- 

 tose beneath; umbel pedunculate, compound, bractes leafy, numerous ;. involucres 

 usually smooth, with acute teeth ; perianth mostly glabrous. 



Hab. Near Santa Barbara, Upper California, (\uttal!.) 



^. foliolosum. Leaves more acute, with the petiole, young branches and the 

 perianth, externally near the base, pilosely pubescent. 



Hab. With the above. 



E. *verticillafum. Biennial ; stem dichotomously branching, the offsets all 

 subtended by verticles of sessile, lanceolate, very acute leaves, in 3's; radical 

 leaves oblong, as well as the stems and branches whitely tomentose, attenuated 

 below into long petioles ; flowers wholly unknown. 



Hab. Near St. Diego, Upper California. 



We have not seen the plant in flower, but the remarkable characters, some- 

 what resembling those of E. iomentotum, and unlike any other species, perhaps 

 justifies our giving it a passing notice. 



E. ^lenelhim. Densely caespitose, with a woody, multifid, short caudex ; 

 leaves roundish, ovate or elliptic, on short petioles, not exserted from the caespi- 

 tose mass, whitely tomentose on both sides, as well as the scape and involucrum ; 

 capitulum solitary, rather small ; involucrum cylindric, with obscure teeth, 

 cluster of involucres 8 or 10 sessile ; flowers small, purple ; segments of the peri- 

 anth oblong, not very unequal. 



Hab. In the Rocky Mountains, on the western slope. 



-EUCYCLA.t 

 Pcrimith membranaceous, colored, petaloid, dimorphous, the three outer di- 

 visions, orbicular, concave; the three inner linear-oblong, emarginate, connivent 

 into a cylinder. Stamens 9, with short filaments, membranous at base. Sfi/les 

 three, of moderate length, with small, capitate stigmas. Adicniuin attenuated, 

 triangular. Einbryo excentric ; radicle superior; cotyledons flat. 



E. *ovnlifoli,a. Leaves all radical, short and roundish-ovate, whitely tomen- 

 tose ; capitulum made up of several sessile, whitely tomentose involucres; outer 

 segments of the yellow perianth rather narrower at base, the inner emarginate 

 segments exserted. 



Eriogonum ovalifoUum. Nutt., Journ. Acad. Nat Sci., Philad. 



Hab. Sources of the Missouri. Flowers bright yellow. 



fin reference to the circular figure of the perianth. 



