PLANTS COLLECTED BY DR. GAMBEL. 163 
A very low shrub, crowded with brown, short, twiggy branches; umbels very 
compound; the involucres all distinct, not crowded together; every “sages of the 
umbel subtended by short appressed bractes. 
Has. On the sides of hills in Oregon, east of Walla-Walla. (Nuttall.) 
E. *CAMPANULATUM. Leaves all radical, clustered upon a thickish caudex, linear-spathulate or narrowly 
oblong, narrowed below into longish petioles, whitely tomentose on both sufaces; scapes smooth and 
naked; umbel about twice trichotomous, few-flowered; bractes acute, a little tomentose on the 
margins; involucrum campanulate, about 6 to 10-flowered, smooth, with obtuse teeth; perianth 
yellow, smooth. 
A small species, with long, narrow, whitely tomentose leaves, clustered at the top 
of a simple unbranched caudex, one and ‘a half to two inches long, by about two to 
three lines in width, and obtuse; scapes six to eight inches, and as well as the 
branches of the umbel, quite smooth and brownish; rays usually three to four, 
some simple and others subdivided; involucres solitary; pedicellate mostly with 
bractes a little below them: flowers minute, dioicous? stamens nine. 
Has. On the western declivity of the Rocky Mountains. (Nuttall.) 
E. *preEvicauLis. Branches very short, arising from a woody caudex, clustered, tomentose; leaves 
linear-lanceolate, long and rather acute, attenuated into a very long petiole, whitely tomentose 
beneath, less densely above; upper scapoid stem very smooth; the bractes acuminated, tomentosely 
margined ; umbel two or three times compounded, with very long rays, teeth of the campanulate 
involucrum acute; flowers smooth, yellow and very small. i 
A much larger plant than the preceding, which it much resembles, with an evident 
short stem; leaves three or four inches long, attenuated, with a very long petiole, 
dilated at its embracing base two or three lines wide. 
Has. On the upper plains of the Oregon. (Nuttail.) 
E. *GyRopnyiuum. With a woody caudex; lower leaves clustered towards the base of the stem, 
oblong-lanceolate, acute, attenuated at the base, beneath tomentose and yellowish-white, above slightly 
pubescent and green ; a verticel of leaves on the stem, about six, subsessile, oblong; umbel simple, of 
many short rays, with a leafy, spreading involucrum, tomentose within and without, many-flowered, 
shallow and simple, with longish, reflected teeth; perianth smooth, exserted. 
A remarkable species, bearing some distant resemblance to E. tomentosum, but the 
plant and its leaves are much smaller. It is about a foot high; leaves about two 
inches long, and half an inch wide, with a little of the brownish hue to the tomentum 
so remarkable in E. tomentosum. Several infertile small branchlets come out from 
the stem, which is also tomentose; rays of the umbel eight to ten; flowers 
ochroleucous, numerous, much exserted, oblanceolate; achenium a little hairy on 
the angles. 
Haz. Rocky Mountains of the Platte. (Nutiall.) 
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