Venegasia. COMPOSITiE. 411 



oblong, obscurely quadrangular (muricate, DC), destitute of pappus. — A 

 somewhat shrubby and nearly glabrous branching plant ; with alternate del- 

 toid-cordate toothed leaves, on slender petioles, and large nodding heads on 

 short peduncles. Ray and disk yellow. 



V. carpesioides (DC. ! 1. c.)—Nult. ! in trans. Amer. phil. soc. I. c. p. 395. 



California, Douglas! Nuttall .' (In rocky situations around St. Barbara, 

 near the sea.) — Leaves like those of Campanula rhomboidalis. Head, with 

 the conspicuous rays, 2 inches in diameter. 



151. EGLETES. Cass. diet. ; Less. syn. p. 252 ; Nutt. I. c. 

 Egletes & Leucopsidium, DC. 



Heads many-flowered ; the rays numerous, pistillate. Scales of the hemi- 

 spherical involucre ovate-lanceolate, with scarious margins, imbricated in 

 few series. Receptacle convex, naked. Branches of the style in the disk- 

 flowers terminated by a short cone. Achenia glabrous, or somewhat hairy 

 when young, somewhat angled or ribbed, scarcely compressed, with a short 

 and thickened coroniform pappus, which is more or less toothed or cleft. — 

 Diffuse or erect canescent or hairy branching (West Indian, Mexican, and 

 ArkansanJ herbs; with alternate often toothed or pinnatifid leaves. Heads 

 terminating the branches. Rays white ; the disk yellow. 



1. E. Arkansana (Nutt.) : annual, canescent, erect; cauline leaves, ses- 

 sile, lanceolate-oblong, obtuse, entire, or sparingly and slightly toothed ; the 

 radical tapering to the base, sinuate-toothed ; rays much longer than the in- 

 volucre; corolla of the disk becoming thickened and corky at the base; 

 achenia sulcate-striate ; pappus laciniate-cleft. — Nutt.! in trans. Amer. phil. 

 soc. (n. ser.) l.p. 394. Leucopsidium Arkansanum, DC! prodr. 6. p. 43. 

 Keerlia skirrobasis, Koolz. ! ic. pi. t. 240, not of DC 



Arkansas ! and Texas ! Aug. — Head smaller than in Leucanthemum 

 vulgare : the rays linear, nearly an inch long. Pappus thickened and almost 

 corneous at the base, usually deeply cleft into sharper segments than is re- 

 presented in Hooker's figure above-cited : that of E. (Leucopsidium, Benth.) 

 humilis is minutely and evenly toothed or cleft, more like that of E. Domin- 

 gensis. 



152. LEUCANTHEMUM. Tourn.; DC prodr. 6. p. 45. 



Heads many-flowered ; the rays pistillate, numerous. Scales of the broad 

 imbricated involucre with scarious margins. Receptacle flat or convex, 

 naked. Corolla of the disk with a fleshy obcompressed and slightly 2-winged 

 tube. Achenia of the disk and ray similar, somewhat terete, striate, desti- 

 tute of pappus, or those of the ray sometimes furnished with an auriculseform 

 pappus. — Perennial herbs, with alternate mostly toothed or pinnatifid leaves, 

 and large solitary heads terminating the stem or branches. Rays white or 

 occasionally reddish ; the disk yellow. 



§ Achenia of the ray as well as the disk destitute of pappus : flowers all 

 fertile. — Phalacroglossum, DC. (Chrysanthemum, Less.) 



