Flanria. COMPOSIT.E. 353 



rather small (disk bareh- half-inch in diameter): rays rather sparse and narrow, half-inch 

 or less long, yellow and brownish : teeth of disk-corolla oblong : akenes with rather short 

 and scanty villosity, surpassed by the numerous setiform fimbrilla;. — Proc. Am. Acad. xix. 

 34. G. pulcliella, var., (hay, PI. Wright, i. 120, along witli plants mentioned as G. lanceo- 

 fa(a. — Hills of the Rio Frio, S. \X. Texas, Wright. (Adj. Jlex. to San Luis.) 

 = = Akenes densely long-villous all over: fimbriUoe subulate-setaceous: rays yellow: pedun- 

 cles scapiform or from short leafy stems, 5 to 10 inches long: some or even all "the leaves pin- 

 natifid, but very variable. 



■ G. pinnatiflda, Tore. Perennial, cinereous-pubescent : leaves sometimes linear or with 

 linear lobes, sometimes spatulate and sinuate or even entire : pappus-paleiE lanceolate. — 

 Ann. Lye. X. Y. ii. 214; Torr. & Gray, 1. c — Plains, W. Texas to Colorado and Arizona; 

 first coll. by James. {Adj. Mex.) 

 G. Arizonica. Annual, greener : leaves less frequently pinnatifid and with only oblong 

 lobes: pappus-pale^ obovate-oblong, very obtuse or retuse. — High plains of S. Utah and 

 Arizona, Palmer, Parry, Greene, Pringle. Has been confounded with the preceding. 



* * Glabrous or nearly so, thick-leaved, impressed-punctate, low, perennial from a stout multi- 

 cipital caudex: rays and disk-flowers both j'ellow: bracts of involucre more coriaceous, mostly 

 ovate or oljlong and with short herbaceous tips: teeth of disk-corolla short, ovate, nbtuse: 

 akenes moflerately villous all over. 



G. spathulat*, Gray. Hardly a foot high, leafy-stemmed, branched from the base : leaves 

 spatulate, entire, inch long, uppermost gradually smaller : head barely half-inch in diameter : 

 rays few and small : pappus with awns surpassing disk-coroUa : fimbrillas setaceous-attenuate, 

 shorter than the akenes. — Proc. Am. Acad. xii. .59, — Rabbit Valley, Utah, Ward. 



G. acaulis, Gray. Leaves all clustered on the thick caudex, ovate and obovate, somewhat 

 spatulate, contracted into slender petioles, entire or sparingly dentate : scapes a span to a 

 foot high : bead larger ; ra^s more numerous, over half-inch long, rather narrow and with 

 narrow lobes: pappus with short awns not equalling the disk-corolla; fimbrillae subulate, 

 shorter than the akenes. — Proc. Am. Acad. xi. 7.3, — S. W. Utah and adjacent Arizona, at 

 Mokiak Pass, &c., Parry, Palmer. 



161. SART'WfiLLIA, Gray. (In honor, now in memory, of i?r. iTc?!?-^ 

 P. Sartwell.) — Annuals (of the Tesano-ile.xican border), glabrous, a foot or two 

 high, leafv. fastigiately branched, and bearing very numerous small heads (only 

 2 lines high) of yellow flowers in corymbiform cymes ; the leaves all narrowly 

 linear or filiform, entire, rather fleshy, opposite, slightly connate at base. — PI. 

 ■fright, i. 122, t. 6, & Proc. Am. Acad. xix. .34. — Two species. 



S. Flaveriee, Gray, 1. c. Leaves nearly filiform : pappus a truncate cupule, — S. W. Texas, 



on the Pecos, &c., Wright, Thurher, Havard. 



S. IIexicaxa, Gray, Proc. Am. Acad, xviii. 107, xix, 34 (coll. Palmer in Northern Mexico), 

 has less filiform leaves, and a pappus of nearly distinct paleas, with which as many longer delicate 

 awns alternate. 



162. FLAVERIA, Juss. . (From flai-us. yellow; phints used to dye yel- 

 low.) — Glabrous herbs (mainly tropical-American), mostly annuals ; with small 

 and fascicled or glomerate heads of yellowish or yellow flowers, and opposite 

 sessile leaves, the broader ones 3-nerved. Akenes mo.stly smooth and glabrous. 



Gen. 186; Benth. & Hook. Gen. ii. 400. Flaveria & Broteroa {Brotera, 



Spreng.), DC. Prodr. v. 635. Vermifuga, Ruiz & Pav. Prodr. 114, t. 24. 



§ 1. Involucre 4-lo-flowered, composed of 3 to 5 principal bracts. 



# Heads more or less clustered in broad and open naked-pedunculate compound termmal corjmbi- 

 form cvmes: leaves somewhat fleshy: involucre of 5 bracts: corollas except in the last species 

 nearly or quite glabrous. 



F. chlorgefolia. Gray. Glaucous, 1 to 3 feet high : leaves entire, from ovate-oblong to 

 lanceolate, broadest (half to fuUy an inch broad) and connate or connate-perfoliate at base : 



23 



