342 PROCEEDINGS OF THE AMERICAN ACADEMY. 



branches enlarged at tip, short-appendaged. Achenes corky-winged, 

 sometimes meniscoid, with a cupule in place of pappus. — Leptosyne 

 sect. Euleptosyne Gray, Syn. Fl. i. pt. 2. 299 (1884).— Two species of 

 Arizona, California, and northern Lower California. 



* Achenes with numerous clavellate hairs on both faces; disk-corollas with 



bearded annulus; leaf-divisions nearly filiform. 



11. C. DouGLASii (DC.) Hall. Scapes solitary or few, 1-3.5 dm. 

 high; leaves chiefly in a dense basal tuft, entire or mostly 1-2-pin- 

 nately dissected into linear-filiform lobes, 2-10 cm. long; outer in- 

 volucral scales linear, 5-8 mm. long; inner yellow, scarious-margined, 

 multinervose, ovate, slightly longer. — • Univ. Calif. Pub. Bot. iii. 140 

 (1907). Leptosyne Douglasii DC. Prod. v. 531 (1836). L. californica 

 Nutt. Trans. Am. Philos. Soc. ser. 2. vii. 363 (1841). L. Newherryi 

 Gray, Proc. Am. Acad. vii. 358 (1868). — Southern California and 

 southern Arizona; also San Quentin, Lower California, 1889, Palmer 

 677. 



* * Achenes without clavellate hairs, glabrous on outer face, rnore or less 

 papillose on inner; annulus nearly or quite glabrous; leaf -divisions about 

 1-1.5 mm. broad. 



12. C. Stillmanii (Gray) Blake, n. comb. Somewhat stouter than 

 last, more leafy below; corky margin of achene rugose. — Leptosyne 

 Stillmanii Gray, in E. Durand, Journ. Acad. Nat. Sci. Phila. iii. 91 

 (1855), and in Torr. Bot. Mex. Bound. 92 (1859). L. Stillmani Gray, 

 Bot. Calif, i. 356 (1876). — California: Calaveras Co., Heennann; 

 valley of the Sacramento, Stillman (type in Gray Herb.) ; hillsides. 

 Auburn, April 1865, Bolandcr 4520; dry sand hills, Antioch, 16 April 

 1868-9, Kellogg & Harford 4:^^; fields, Middle Tule River, 240-305 in., 

 April-Sept. 1897, Purpus 5004. 



COREOCARPUS Benth. (/copts bug, and Kapwos fruit, from 

 the peculiar achenes). Heads heterogamous, radiate, the flowers all 

 yellow; rays styliferous, fertile, disk-flowers mostly fertile. Involu- 

 cral scales 5-8, 2-rowed, subequal, submembranaceous, dark-lineate, 

 ovate to ovate-oblong, the outer obtusish, the inner acuminate; heads 

 sometimes with a few bractlets at base. Receptacle flat, with narrow 

 membranaceous pales subtending the flowers. Ligules small, 4-5- 

 nerved, entire or emarginate; disk-corollas regular, tubular, with 

 slightly enlarged funnelform throat and 5-toothed limb, with a hairy 

 annulus at base of throat. Style-branches with subulate hispid appen- 

 dages. Anthers entire at base. Achenes obcompressed, with an 



