Box.— Vol. I.] EASTWOOD— STUDIES FROM THE HERBARIUM. 121 



II.-NEW SPECIES OF CNICUS FROM SOUTHERN COLORADO 



AND UTAH. 



I. Cnicus bipinnatus, sp. nov. 



Cnicus Drummondii var. bipinnatus Eastwood, Zoe, Vol. IV, p. 8. 



Glaucous and glabrous except for some slight arachnoid tomentum on the 

 stems, petioles, and involucral bracts: stems stout, erect, leafy, 6 dm. or 

 more high, branching from the base and also above; leaves with numerous 

 linear-lanceolate divisions which are 2-6 cm. long, 5 mm. wide and irregularly 

 parted near the base, generally on one side only, into similar lobes varying in 

 length and sometimes as long as the main division, margin laciniate-dentate 

 spiny, lateral spines 2 mm. long, terminal 4-5 mm. ; radical leaves petiolate,' 

 lYz-T, dm. long, 6-10 cm. wide; cauline, sessile, 10-15 cm. long, 5-6 cm. wide: 

 heads corymbose at the ends of the leafy branches, almost sessile, narrow, 

 cylindrical, 4>^ cm. long, i cm. or more wide ; involucre of appressed] 

 imbricated bracts, successively shorter, in seven ranks, the lower ones 

 pointed with a weak prickle 3-5 mm. long, the upper attenuate to a scarious 

 tip, minutely puberulent ; flowers purple ; corolla with tube about half as 

 long as the throat and divisions, throat about one-third as long as the linear 

 clavate-tipped divisions ; stamens surpassing the corolla ; style straight with 

 the node 2}^ mm. from the tip; akenes glabrous, shining, flattened, obovate- 

 oblong, 6 mm. long, 3 mm. wide, surmounted with a yellow ring. 



This is nearer to Cnicus Rothrockii than to Cnicus Drum- 

 mondii but differs from the former in its foliage, narrower 

 heads, short, weak spines, and general appearance. It 

 formed a clump two feet or more in height and almost two 

 feet in diameter. 



Collected in Colorado in Johnston Canon, near where it 

 joins the Mancos River, in a locality but rarely visited by 

 white men. 



Closely related to this is the plant which the writer^ 

 described under the name C. Rothrockii var. diffusus. I 

 take this opportunity of giving this, too, specific rank. 



2. Cnicus diffusus, sp. nov. 



Similar to the above in habit and surface: leaves narrower, less deeply 

 divided, with more regular and triangular lobes ; spines at the tips of the 

 lobes I cm. long, stiff, yellow, those along the margins 1-3 mm. long : heads 

 somewhat broader than the last, with outer involucral bracts tipped with stiff 

 spines from 1-2 cm. long, deflexed-spreading in fruit, inner bracts attenuate 



1 Proc. Cal. Acad. Sci., Ser. 2, Vol. VI, p. 303. 



Sept. 13, 1898. 



