Ex. Doc. No. 41.. 141 



leaves pinnatifid, or sinuate toothed; flowers (small) 2-3 together 

 pedicellate; petals 10, lanceolate; stamens very numerous; the 

 outer filaments dilated; capsule turbinate, cylindrical; seeds nume- 

 rous, winged. Valley of the Del Norte. Plant about a foot high. 

 Flowers less than an inch in diameter. Capsule three-fourths of 

 aa inch long, 3 valved at the summit. , ^ 



Cevallia sinuata, Lagasca. This interesting plant, which has 

 been admirably illustrated by Fenzl, occurs in many parts of the 

 valley of the Del Norte, from Santa Fe to Saltillo. 



CUCURBITACEiE. 



F 



w 



t 



Cucumis perennisj JameSy Torr. and Gr. On the Gila river, 

 abundant. We are yet uncertain of the'genus of this plant, which 



common in various parts of Mexico^ particularly in arid 

 sandy ivastes. No specimens of the fruit have yet been sent to us. 

 There aVe three other undetermined Cucurbitacese in the collection^ 

 distinct from any described in the Flora of North America. 



seems to be 



CACTACE^. 



S 



several interesting plants of this family were noticed by Colonel 

 -Lmoryj but they cannot be satisfactorily described from dried 

 specimens. They are probably included among the numerous new 



species of Mexican cactace^ soon to be described by Dr. Engle- 



^3.nn. 



«* 



CORNACE.^. 



Cornus paniculata, PHer. On the Arkansas. 



CAPRIFOLIACE.^. 



^ymphoricarpus TAcemosus, Lin7i.' (Snow berry.) On the Ar- 

 kansas. • ■ J ^ . 



COMPOSITAE, 



Vernonia fasciculata, Michx. Bent's Fort. 



J^iatris punctata, Hook. Rayada Creek. 



^orethrogyne tomentella, Torr. and Gr. Jl. JV'. Jim. 2, p. Q9. 



^ ery abundant on the Cordilleras of the Pacific, and called by the 



i}^es estafiat. It is a celebrated remedy for cholera, as noticed 



°y^olonel Emory in his notes. ■ :', - .^"t^ 



leteria incana, Torr. and Gr.? Biplopappus incanus, Lindl.f 



^^ the Gila. Differs from Douglass's Californian plant in its slen- 



^n^^r'^' ^^^ nearly glabrous, spinulose dentate leaves. "::'''" 



Y' Coronopifolia, JWtt. Valley of the Del Norte, and the^head 



^^^ers of the Canadian. ^ - .^ 



1 . ,' ^steroides, n. sp. Minutely scabrous^pubescentj stem panicu- 



^ y J^ranched above; leaves oblong-cuneatej somewh'^t rigidj, 



