290 PROCEEDINGS OF THE AMERICAN ACADEMY. 



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

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

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

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

 5-flowered : 9 achene 1.5 mm. long, £ 1 nim. long. — Klatt, Leopold, 

 xxiii. 1-46 (1887); F. angustifolia, Sch. Bip. non Pers. var. ramosissima, 

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

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

 U. S., lib. 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, lanceolatedinear 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: acheues about equal. — Rob. Proc. Am. 

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

 Pringle, 3669 ; Plains of Venegas, Prhigle, 5367, Nov. 1892 (lib. U. S.) ; 

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

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



t- -t- Perennial. 

 ++ Inflorescence much branched; glomerules of few heads. 



11. F. Palrneri, nov. 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 iu 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.). 



