418 PHANEROGAMOUS PLANTS. 



10. PECTOCARYA, DC. 

 1. Pectocarya lateriflora, DC. 



Pectoearya lateriflora, DC. Prodr. 10, p. 120. 



Cynoglossum pilosum , Ruiz & Pav. FL Peru v. 2, p. 6, t. 3, f, 6. 



Hab. Near Fort Okanagan and other trading forts on the Upper 

 Columbia; probably introduced by cattle from farther south, or per- 

 haps from Peru. — The characters assigned to the four species of Pecto- 

 carya, described in the Prodromus, are not reliable, and we strongly 

 doubt whether there is more than one species of that genus. Our 

 Okanagan plant is intermediate between P. lateriflora and P. Chilensis. 

 P. penicillata usually has the nutlets pectinate chiefly on the upper 

 half; but, frequently, with the exception of a short naked interval, 

 the lower half is pectinate also. Nuttall's Cynoglossum pilosum (C. 

 Nuttallii, Spreng.), which Alph. DeCandolle referred to P. 'penicillata, 

 is a species of Echinospermum. In our specimens of Pect. penicillata 

 the margin of the nutlets is pectinate with uncinate (not glochidiate) 

 hairs, as in the other species. In the Prodromus (in a note) there is 

 an error, which is probably accidental, as to the direction of the radi- 

 cle of Pectocarya. It is inferior in all the specimens that we have 

 examined. 



11. ECHINOSPERMUM, Swartz. 

 1. Echinospermum patulum, Lehm. 



Echinospermum pabulum, Lehm. Asperif. p. 124 ; Hook. PI, Bor.-Ara. 1, p. 84; DC. 

 Prodr. 10, p. 137 ; Torr. Bot. Mex. Bound, p. 142. 



Hab. Upper Columbia, Washington Territory. — This species is 

 pretty widely diffused over the country west of the Mississippi. It 

 occurs as far south as Eagle Pass on the Rio Grande. No. 634 of 

 Fendler's and 1569 of Wright's New Mexican collections are the same 

 as the plant of the Exploring Expedition. The Rev. Mr. Spalding 

 collected on the Kooskooskee a variety of this species in which the 

 prickles of the nutlets are shorter, and tapering from a broad base. 



