lUddellia. COMPOSITiE. 317 



Tribe YI. HELENIOIDE^, p. 70. 



128. CLAPPIA, Gray. {Dr. A. Clapp, author of a Synopsis of the 

 Medicinal Phmts of tlie U. S.) — Bot. Mex. Bound. 93; Benth. & Hook. Gen. 

 ii. 413, & Ic. PI. xi., partly. (The excluded C. aurantiaca, Benth. Ic. PI. t. 1104, 

 is a Dysodia, apparently wanting the oil-glands.) — Single species. 



C. SUSedaefolia, Gray, 1. c. Suffruticose, a foot high, widely hrancliiiig, not punctate nor 

 glandular : leaves alternate, fleshy, terete, linear, entire, or the lower pinnately 3-5-parted, 

 sessile: head (half-inch in diameter) pedunculate, terminating herbaceous hranchlets : flow- 

 ers doubtless yellow. — Benth. Ic. PI. t. 1105. — S. Texas; on the Kio Grande at Laredo, 

 Berlandier. Alkaline flats of the Pecos, Harard. 



129. JAtJMEA, Pers. (/. H. Jaume St. ff/Iaire, a French botanist.) — 

 Herbs or suffruticose plants (mainly S. American) ; witli opposite entire leaves, 

 and terminal pedunculate heads of yellow flowers. — Syn. PI. ii. 397 ; Benth. 

 & Hook. Gen. ii. 397 (including Coinogync, Less., Espejoa, DC., Chcethymenia, 

 Hook. &, Arn., &c.) ; Gray, Bot. Calif, ii. 371. Kleinia, Juss., not L. 



J. carnosa, Gray. Procumbent or ascending perennial herb, fleshy, glabrous, leafy to the 

 short-pedunculate head: leaves spatulate-linear, almost terete, about inch long: head half- 

 inch long, fleshy : rays 6 to 10, linear, not surpassing the disk: receptacle conical: akenes 

 glabrous, destitute of pappus. — Wilkes Exped. xvii. 3G0, & Eot. Calif, i. 372. Coinoqyne 

 carnqsa, Less, in Linn. vi. 520; Torr. & Gray, Fl. ii. 410. — Salt mar.shes and sea-beaches, 

 Brit. Columbia to California; prubal)ly first coll. by Chamisso. 



130. VENEG-ASIA, DC. (Michael Venegas, a Jesuit missionary, early 

 writer upon California.) — Prodr. v. 43; Benth. & Hook. Gen. ii. 397. — Single 

 species, yellow-flowered. 



V. carpesioides, DC. 1. c. Large perennial herb, with glabrous leafy branches : leaves 

 alternate, slender-petioled, membranaceous, ovate and subcordate, mostly denticulate, veiny, 

 somewhat puberulent or atomiferous : heads terminal and from upper axils, short-peduncled, 

 inch broad, and the about 15 rays an inch long. — Gray, Bot. Calif. 1.372. Part/imiopsis 

 maritima, Kellogg, Proc. Calif. Acad. v. 100. — Pocky banks of streams, coast of California, 

 from Santa Barbara southward ; first coll. by Douglas and Coulter: fl. summer. 



131 . RIDDELLIA, Nutt. (Prof. John L. Riddell, author of a Synopsis 

 of the Flora of Western States.) — Low and corymbosely branched woolly herbs 

 (Texano-Arizonian) ; with alternate and spatulate or linear leaves, the cauline 

 entire, and small heads of yellow flowers ; the ligules large in proportion, becom- 

 ing pale or whitish in age and thin-papery; fl. summer. In habit not unlike 

 Zinnia § DijAothrix of tlie same regions. Bracts of the involucre distinct, but 

 connivent-erect, and connected by the intricate wool so as to seem connate. — 

 Trans. Am. Phil. Soc. n. ser. vii. 371 ; Gray, PI. Fendl. 94, & Bot. Calif, i. 372. 

 Psilostrophe, DC. Prodr. vii. 2G1. 



* Raj's at maturity half-inch long: akenes and pappus g-labrous, or flic former with few and short 

 scaltered hairs: perennial. 



R. tagetina, Nutt. I. c. Loosely or somewhat villosely lanate, sometimes glabrate in age, 

 rather widely branched : radical and even lower cauline leaves often laciniate-pinnatifid : heads 

 num(^rous, mostly cymosely clustered and short-peduncled : paleaj of the pappus oblong- 

 lanceolate, entire, usually obtuse, half or tiiree-fourths the length of the disk-corolla. — Torr. 

 in Emory Rep. t. 5; Gray, PI. Fendl 94. — W. Texas to E. Colorado and Arizona; first 

 toll, by James. 



