134 BOTANY. 



inability to find any trace of carpophore, either free or adherent, to the 

 carpels. — Denver, where in June it is quite common on the plains. 



Ligusticum montam.m, Bentham & Hooker. (Thaspium t montanum, 

 Gray.) — 1-2° high, often branched ; leaves twice ternately divided; lobes 

 linear, linear-lanceolate, or lanceolate, 9-18" long; petioles 1-4' long, widely 

 dilated into a sheath toward the base; fruit variable, oval or broadly oval, 

 marginal wings broader than the others, or sometimes the dorsal as much 

 dilated as the marginal ; vittac single or double in each interval ; involucre 

 none; involucels of 5-9 setaceous bracts, which are 2-4" long; flowers 

 bright yellow.— Central Colorado, reaching as high as 12,000 feet altitude 

 (116, 719, 720, 724), and in Arizona, at Willow Spring, at 7,195 feet 

 altitude (253). In the majority of cases in my specimens, one carpel has 

 entirely, or almost entirely aborted. 



Ligusticum apiifolium, Benth. & Hook. — Twin Lakes, Colorado (717). 



Tiiaspium trifoliatum, Gray. — South Park, Colorado (727). 



Angelica Wiieeleri, Watson (American Naturalist, 7, 301). — "Tall 

 and stout, roughly puberulent, leaves biternate ; leaflets ovate-oblong, 

 2-3' long, acute, incisely serrate, the teeth broad and mucronate, middle 

 leaflets petiolulate ; umbels naked ; rays numerous, unequal, becoming 2-5' 

 long ; pedicels and ovary hispid ; petals apparently white ; fruit broad- 

 elliptical, 3" long, sub-pubescent, the dorsal wrings thick, narrower than 

 the lateral ones, Utah." 



Angelica lineariloba, Gray (Proc. Amer. Acad, vii, p. 347). — South- 

 ern Sierra Nevada, at 9,500 feet altitude (355). 



Arciiakgelica Gmelixi, DC. — Twin Lakes, Colorado (712). 



Feeula multifida, Gray (?). — From Utah, the Expedition has simply 

 the leaves of what Mr. Watson doubtfully refers here. 



Peucedanum sativum, Benth. & Hook. (Pastinaca sativa, L., Gray's 

 Manual.) — Utah. Introduced. 



IIeracleum lanatum, Michx. — Twin Lakes, Colorado (713), and New 



Mexico ? Hance. 



CORNACE^. 



Cornus pubescens, Nutt. — Utah. A specimen from Loma, Colorado, 

 is doubtfully placed here. Specimens too poor. (79 ) 



