290 PROCEEDINGS OF THE AMERICAN ACADEMY. 



blanching; branches diffuse, fastigiate-corymbose, leafy; upper stem 

 somewhat villous, leaves liuear-lanceolate, acute, remotely dentate, 

 1-nerved, 2.5 era. long, .2 cm. wide, base connate-vaginate : peduncles 

 and pedicels winged: heads .3 cm. long, with a bracteate base, 1-Iigulate, 

 5-fiowered : 9 achene 1.5 mm. long, ^ 1 mm. long. — Klatt, Leopold, 

 xxiii. 146 (1887) ; F. angustifoUa, Sch. Bip. uon Pers. var. ramosissima, 

 Klatt, 1. c. — Mexico : Tehuacan, Pringle, 6756, Aug. 1897, alt. 1500 m. 

 (hb. Gr., hb. U. S.) ; Puebla near Tehuacan, Pringle, 7031, 1895 (hb. 

 U. S., hb. Gr.) ; Liebmann, 456 and 457 (hb. Gr.), 



++ ++ Bracts swollen. 



10. F. ANOMALA, Rob. A glabrous annual, a span high: stem 

 striate, angulate, much branched : leaves linear or lanceolate-linear, 

 gradually narrowed to a slightly connate base, acute, 4 cm. to 5 cm. 

 long, .3 cm. to .5 cm. wide : heads numerous, aggregated at the ends of 

 the branches in dense corymbs, very small, subtended by minute dark- 

 tipped bracts, l-(rarely 2-) flowered ; the single flower either tubular or 

 ligulate : involucral scales of unequal breadth, lanceolate-linear or oblong, 

 more or less narrowed but obtuse at the apex, persisting in fruit, and 

 becoming swollen and bulbous on the back near the base ; corollas 

 bright yellow ; in the tubular flowers the campanulate throat and spread- 

 ing limb equalling the tube, the latter hairy on the outer surface ; the 

 ligules .2 cm. or less in length: achenes about equal. — Rob. Proc. Am, 

 Acad, xxvii, 178 (1892). — Mexico : San Luis Potosi, Sept. 1890, 

 Pringle, 3669 ; Plains of Veuegas, Pringle, 5367, Nov. 1892 (hb. U. S.) ; 

 Parry, in 1878, North Mexico, 31, and in 1878 en route from Saa Luis 

 Potosi to Sau Antonio, Texas, 500 (hb, Gr., hb. U, S.). 



t- -1- Perennial. 

 •M- Inflorescence much branched ; glonierules of few heads. 



11. F. Palmeri, uov, sp. Thickened perennial root, giving rise to 

 1 to several more or less reclining stems ; stem pale, branching copiously, 

 glabrous : leaves linear-lanceolate, sparingly denticulate, slightly connate, 

 1 to 3.5 cm. long: heads in rather small cymes; cymes in compound 

 corymbiform panicles : involucral bracts 3, equal, slightly keeled, .5 cm. 

 long, the 1-2 outside bracts minute : lamina 9 oval, .3 cm. long, exceed- 

 ing slightly the achene ; corolla tube villous. — Mexico: San Lorenzo 

 de Laguna, 93-114 kms. southwest of Parras, Coahuila, Palmer, 684, 

 May, 1880 (hb. Gr., hb, U. S.). 



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