ROBINSON AND GREENMAN. — GENUS VERBESINA. 545 



§ 8. Verbesinaria, DC. Heads mostly numerous, medium-sized or 

 large ; involucral bracts lanceolate to liuear-oblong : rays relatively long 

 (1 to 2.5 cm.) and showy, yellow : leaves linear- to lance-oblong, or ovate, 

 alternate (except in V. hi/j)0(/lauca, V. sororia, V. occidentalls, and 

 V. elegans), never lobed. — Prodr. v. 612, in part. 



* Leaves narrow, linear to oblong, entire or remotely serrulate. 



•<- Outer bracts of tlie involucre of irregular lengtli, some of them elongated and 

 much surpassing the disk : stem wingless : leaves 1 to 2 dm. long. 



31. V. LoNGiFOLiA, Gray, Proc. Am. Acad. xix. 12 (1883), & Syn. 

 Fl. i. pt. 2, 287. Actinomeris longifolla, Gray, PI. Wright, ii. 89; 

 Hemsl. Biol. Cent. -Am. Bot. ii. 185. — Mountains east of Santa Cruz, 

 Sonora, Wrirjht, no. 1234; Arizona, Rothroclc, no. 608, Pr'mgle, no. 

 327, Lemmon ; Chihuahua, Pringle, no. 1286. 



t- -i- Outer bracts of the involucre not surpassing the inner nor the disk. 

 ++ LeiBves soft-pubescent or tomentose beneath. 



32. V. hypomalaca. Erect perennial herb, 4 to 6 dm. high : stems 

 single or several, virgate, simple, terete, pubescent to hirsute, very leafy : 

 leaves narrowly oblong to linear, obtuse or acute, obsoletely crenulate or 

 serrulate (the margins tending to be re volute), 3 to 8 cm. long, 4 to 10 

 mm. broad, sessile by a cordate-auriculate base, pubescent and very sca- 

 brous above, canescent-tomentose beneath : heads 6 to 30, ovate or at 

 length subconical, 1 cm. in diameter excluding the rays, borne on erect 

 pubescent pedicels in a flat-topped corymb : involucral scales about 2- 

 seriate, linear-oblong, obtusish, pubescent: ligules 15, about 1 cm. long. 

 — V. stricta^ Gray, Proc. Am. Acad. xix. 13, in part, & xxii. 427. Ac- 

 tinomeris stricta^ Hemsl. 1. c. 186, in part. — Orizaba, Botteri, no. 95, 

 Seaton, no. 367; Rio Blanco, Jalisco, Palmer, no. 163; Cerro Ventoso 

 above Pachua, Hidalgo, Pringle, no. 7611 ; Coahuila, Palmer, nos. 627, 

 628 ; Mexico without locality, Coulter, no. 362. 



Var. hypochlora. Leaves yellowish green and soft-pubescent 

 rather than tomentose beneath. — Hills of Patzcuaro, Michoacan, Prin- 

 gle, no. 4136; near Monte Escobedo, Zacatecas, Dr. J. N.Rose, no. 

 2630. Types in herb. Gray and herb. U. S. Nat. Museum. 



-^ tH- Leaves glabrous or covered with a short sparse and scabrous pubescence 



beneath. 



= Stem wingless : rays deep yellow. 



33. V. STRiCTA, Gray, 1. c. xix. 13, in part. Actinomeris stricta, 

 Hemsl. 1. c. as to first named type. — San Luis Potosi, Parry & Palmer, 



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