470 COMPOSITiE. Cynthia. 



which has remarkably narrow leaves, passes into the ordinary state, from 

 which C. Boscii, DC is in no way distinguishable. The var. y. is a singu- 

 lar and probably local form.— The leaves in this and the preceding genera 

 are exceedingly variable in their outline, division, &c., upon which no 

 dependence can be placed for specific characters. 



181. SCORZONELLA. Nutt. in trans. Amer. phil. soc. (n. ser.)7 p. 426. 



Head many-flowered. Scales of the cyhndraceous-ovoid involucre imbri- 

 cated in 3-4 series, ovate, conspicuously acuminate, membranaceo-charta- 

 ceous, nearly as long as the corolla. Receptacle flattish, alveolate. Achenia 

 short, somewhat quadrangular, not attenuate at the apex, many- (10-14-) 

 striate, smooth, obscurely pubescent or glabrous. Pappus of 10 (or rarely 

 fewer) very small and coriaceous ovate chaffy scales, somewhat in two se- 

 ries, which are entire or obscurely denticulate at the apex, each tipped with 

 a very long and capillary scabrous awn. — Perennial nearly glabrous herbs 

 (natives of Oregon) ; with the habit of Scorzonera : the stems several from 

 the same fusiform or tuberous root, sheathed below the membranous dilated 

 bases of the (usually laciniately pinnately parted) leaves, simple or spar- 

 ingly branched, naked above, and terminated by solitary heads. Corolla 

 yellow. 



The scales of the pappus are certainly distinct, not united at the base into a cup, as 

 described by Nuttdl. 



1. S. laciniata (Nutt. ! 1. c.) : slightly puberulent ; leaves pinnately parted : 

 the segments long and slender, linear-subfiliform; scales of the involucre im- 

 bricated in 3-4 series, all acuminated from a broad base; scales of the pap- 

 pus ovate. — Hymenonema? laciniatum, Hook.! Jl. Bor.-Am. 1. p. 301. 



Plains of the Oregon, from the Rocky Mountains to the ocean, Douglas! 

 &c. Near the mouth of the Wahlamet, NutlalU—k foot high: the long 

 naked peduncles fistulous. Flowers bright sulphur-yellow. The inconspicu- 

 ous squamellate portion of the pappus several times shorter than the ache- 

 nium ; the bristles about twice the length of the achenium. 



2. S. leptosepala (Nutt. 1. c.) : leaves pinnately parted ; scales of the in- 

 volucre in two series; the exterior about 5, ovate; the inner 8, lanceolate, 

 acuminate ; scales of the pappus oblong-lanceolate. 



With the preceding, and scarcely distinguishable from it, except by the in- 

 volucre, Nuttall. — This is entirely unknown to us. 



3. S. glauca {Nutt. 1. c.) : leaves linear-acuminate, canaliculate, glaucous. 

 — Hymenonema ? glaucura. Hook. I. c. 



Oregon, at Fort Vancouver, Mr. Garry, ex Hook.— This is a doubtful 

 plant, only known by the brief character given by Hooker. 



182. CALAIS. DC. prodr. 7. p. 85. (excl. syn.) 



Uropappus, Nutt. 



Head many-flowered. Involucre cylindraceous, double ; the scales lance- 

 olate, acuminate, membranaceous ; the exterior 3-6 more or less calyculate ; 



