PLANTS COLLECTED BY DR. GAMBEL. 183 
Nearly allied to I punctata, but with very different bractes, leaves of the same 
form and full of resinous punctures. The flower appears to have been pale purple 
and spotted. 
Has. Near Santa Fé, New Mexico. 
HEDEOMA. 
HI. *crntata. Perennial ; miautely pubescent, branching much from the base ; leaves linear-obtuse, shortly 
petiolate, entire; flowers, two or three together in the axils; calyx hirsute, with long, unequal ciliate 
teeth ; corolla about the length of the calyx. 
About four inches high, very much branched, with at length a woody root. 
Allied to Micromeria glabella, but with smaller and entire leaves, and with the calyx 
of M. hirta. (Hedeoma hirta.) 
Has. Santa Fé, New Mexico. 
SISYMBRIUM. 
8. *REFLEXUM. Smooth ; leaves somewhat lyrate-pinnatifid, the terminal lobe toothed, upper leaves nearly 
_ entire and denticulate ; flowers small ; petals linear-spathulate, a little longer than the coloured calyx; 
pods subterete, very long, nearly sessile, rigidly reflected and acuminated with the style. 
A rather stout species, about two feet high, with the slique an inch and a half 
long. It bears some affinity to Hesperis pinnatifida of Michaux, but the seeds are 
terete and not margined, and the pods slightly compressed and not torrulose. 
Has. Near San Pedro, Upper California. 
URTICA. 
U. *HoLosErRIcea. Perennial and tall; leaves opposite, large, on long petioles, cordate-ovate, acute, above 
lanceolate, coarsely serrated, smooth, beneath silky villous, as well as the stems and petioles, the latter 
also pilose ; flowers tetrandrous ; in axillary, filiform, compound racemes ; the upper clusters styliferous — 
only. 
A tall species, resembling U. procera but monoicous, and with the large leaves 
almost whitely villous beneath with a soft down, amidst which, however, on the 
stem are the usual long hispid hairs, some of the leaves are a span long without the 
long petiole. Male calyx four-parted, the female four-parted with two of the 
segments minute. Fruit ovate; pale brown and shining. 
Has. Near Monterey, i i California. 
APIUM. 
| A. GRAVEOLENS. (Celery.) Marshes on the coast of Santa Barbara. (Dr. Gambel.) 
This useful plant, common to all the salt marshes of Europe, is now also found to be 
indigenous to the west side of this continent. 
47 
