PLANTS COLLECTED BY DR. GAMBEL. 165 
an inch long, about a line wide, as strongly revolute on the margin as the leaves of 
Rosemary. Flowers very numerous and showy, whitish, with red central lines; 
perianth pilose at the base; some of the rays of the umbel nearly sessile. 
Has. Near Santa Barbara, Upper California. 
8. FOLIOLosuM. Leaves more acute, with the ae young branches and the perianth, externally near 
the base, pilosely pubescent. 
Has. With the above. 
E. *veRTIcILLATuM. Biennial; stem dichotomously branching, the offsets all subtended by verticels 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. 
-L. elongatum, (Benth.) ? 
We have not seen the plant in flower, but the remarkable characters, somewhat 
resembling those of E. tomentoswm, and = any other species, perhaps justifies 
our giving it a passing notice. 
Has. Near St. Diego, Upper California. 
K. *nurraii. (Gambel.) Densely czespitose, with a woody, multifid, short caudex; leaves roundish, ovate or 
elliptic, on short petioles, not exserted from the csespitose mass, whitely tomentose on both sides, as well 
as the scape and involucrum ; eapitulum solitary, rather small ; involucrum cylindric, with obscure teeth, 
cluster of involueres eight or ten, sessile ; flowers small, spinel’ 3; segments of the perianth oblong, not 
very unequal. 
. tenellum. Nutt. (Non. Torrey.) Proceed. Acad. Nat. Sci., Feb., 1848. 
Allied to £. ovalifolium, which it resembles at first glance, but with shorter leaves 
_ and elongated scapes, the flowers deep brown purple, and scarcely one-third the size 
of that species. The capitulum in £. ovalifolium, like the present, is made up of 
several sessile involucres, which are sometimes nearly smooth, the perianth also is 
very unequal, three of the outer meunenle being nearly round-oval, while the inner 
are oblong. 
Hias. In the Rocky Mountains, on the western slope. 
The character of the genus Eriogonum, of which there are so many species, 
perhaps deserves some additional consideration. The genus, as founded on £. 
tumentosum of Michaux, possesses yet some peculiarities not common to the rest of 
the genus; among the rest of its characters I may remark, that in place of the interior 
segments of the perianth being smaller, it is the reverse; the perianth increases in 
size with the perfecting of the fruit, and as in Rumez, the three inner segments are 
larger and erect, the three outer reflected; the next discrepancy in the character, as 
viven by authors, is in the condition of the embryo, which is placed in the centre or 
axis of the seed, and is not as described excentric. 
In £. longifolium, besides a remarkable difference in habit, the perianth is wholly 
herbaceous, very lanuginous, and the segments all so very equal, as to appear, at 
