340 PROCEEDINGS OF THE AMERICAN ACADEMY. 



H- -1- Heads smaller, inner scales 4-5 mm. long; leaves mostly with 1 pair of 

 lobes; disk-flowers exannulate. 



6. C. insularis (Brandeg.) Blake, n. comb. Decumbent (base 

 unknown), nearly glabrous; leaves 1-2.5 cm. long, 3-5-lobed; heads 

 axillary and terminal, about 1.3 cm. in diameter including the small 

 rays; outer bracts f as long as inner; achene 4.2 mm. long. — Lepto- 

 syne insularis Brandeg. Erythea vii. 5 (1899). — SocoRRO Island: 

 March-June 1897, Anihony 394 (type collection) : 27 May-3 July 

 1903, F. E. Barkclcw 223. " 



Sect. 3. Tuckerniannia(Nutt.)Blake, n. comb. Stout perennials, 

 with alternate fleshy 2-3-pinnately dissected leaves and large heads. 

 Outer involucral scales 5-8, lance-oblong, al)out equaling the inner; 

 the latter about 12, oblong. Rays large, fertile. Disk-flowers with 

 nearly glabrous annulus. Achenes obcompressed, glabrous, narrowly 

 winged, epappose or rarely with margins produced into short teeth or 

 awns. — Tuckcnnannia Nutt. Trans. Am. Philos. Soc. ser. 2. vii. 363 

 (1841). Lcptosyne sect. Tucker mcmnia Gray, Bot. Calif, i. 356 (1876), 

 &Syn. Fl. i. pt. 2. 300 (1884).— Two species of California, Lower 

 California, and adjacent islands. 



* Heads few, on very long naked peduncles, 6-8 cm. broad including rays. 



7. C. maritima (Nutt.) Hook. fil. Stems fleshy-herbaceous, 

 spreading, 3-8 dm. high, from a thick woody base; leaf-lobes linear, 

 1.5-3 mm. broad; peduncles 2-5 dm. long; rays 14-20; achenes 

 rarely with 2 teeth or awns. — Bot. Mag. t. 6241 (1876). Tucker- 

 mannia maritima Nutt. 1. c. Lcptosyne maritima Gray, Proc. Am. 

 Acad. vii. 358 (1868). — Coast of San Diego County, California, 

 northern Lower California, and adjacent islands. 



* * Heads numerous, cymosely clustered toward tips of branches on peduncles 



mostly 1-1.5 dm. long, smaller (5-6 cm. broad). 



8. C. gigantea (Kellogg) Hall. Stems fleshy-woody, erect, 3-30 

 dm. high, often 1 dm. thick; leaves mostly clustered toward tips of 

 branches; leaf-lobes finer, 1-1.5 mm. broad; rays 10-16; pappus 

 none. — Univ. Calif. Pub. Bot. iii. 142 (1907). Lcptosyne gic/antca 

 Kell. Proc. Calif. Acad. iv. 198 (1872).— Coast of southern California 

 and islands, from Los Angeles County to San Luis Obispo County; 

 also Guadalupe Island, Lower California. — A form occurs on San 

 Nicolas Island {Blanche Trask 76, in part) w^ith discoid heads, the 

 receptacle very chaffy, the disk-florets showing dialysis of corolla 

 with more or less complete abortion of sexual organs. 



Sect. 4. Pugiopappus (Gray) Blake, n. comb. Annuals, branched 



