STANDLEY TEEES AND SHRUBS OF MEXICO 1579 



and strigiilose, beneath rather densely griseous or subcanescent-strigillose and 

 gland-dotted, glabrescent; heads 3 to 6, eymose or cymose-panicled, the pedicels 

 1 to 2 cm. long; involucre 7 to 8 mm. high, the outer phyllaries linear, acute, 

 spreading; pales with short erectish points; rays 1.5 cm. long. 



Fragments of the type have been examined in the Gray Herbarium. 



18. Verbesina hypoglauca Schultz Bip.; Klatt, Leopoldina 23: 144. 1887. 

 Encelia conzatlii Greenm. Proc. Amer. Acad. 39: 111. 1903. 



Puebla and Oaxaca; type from Cumbre de Acalcingo. 



Shrub 3 to 5 meters high; branches appressed-puberulent; leaves opposite 

 nearly throughout; petioles about 5 mm. long, naked; blades lance-oblong or 

 elliptic, 4.5 to 9.5 cm. long, 1.5 to 3 cm. wide, acuminate at each end, callous- 

 denticulate, green above, subsericeous-canescent beneath with very dense and 

 short appressed hairs; heads usually numerous, cymose-panicled; involucre 4 to 

 5 mm. high, the outermost phyllaries the longer, linear to oblanceolate, caneseent 

 on back; rays 8 to 12 mm. long. 



19. Verbesina neriifolia Hemsl. Biol. Centr. Amer. Bot. 2: 188. 1881. 



Chiapas. 



Similar to V. hypoglauca; stem with narrow herbaceous wings; leaves alternate, 

 pubescent as in T^. hypoglauca; heads few, short-pediceied, the pedicels usually 

 winged; raj's 1 to 1.3 cm. long. 



20. Verbesina gracilipes Robinson, Proc. Bost. Soc. Nat. Hist. 31: 269. 1904. 

 Puebla; type from Tehuacan. 



Shrub; branches spreading-pubescent; leaves alternate; petioles 5 mm. long 

 or less, often with auricles or decurrent wings at base; blades elliptic or obovate, 

 2.5 to 8 cm. long, 1 to 2.5 cm. wide, acute or obtusish, long-cuneate at base, 

 green above, canescently tomentose-pilose beneath; heads 1 to 4, long-peduncled; 

 involucre 5 to 7 mm. high, the outermost phyllaries herbaceous, obovate or ob- 

 lanceolate, loose; rays 1 to 1.5 cm. long. 



21. Verbesina petrophila T. S. Brandeg. Univ. Calif. Publ. Bot. 3: 395. 1909. 

 Puebla; t.ype from Barranca de Tlacuilosto and San Luis Tultitlanapa. 

 Shrub 0.5 to 1 meter high; branches tuberculatc, often narrowly corky-winged 



by the decurrent leaf bases; leaves alternate, chiefly obovate or elliptic, 3 to 5 

 cm. long, 1 to 2 cm. wide, obtuse, narrowed to the sessile base, entire, tuberculate- 

 hispidulous, the hairs mostly deciduous; heads 1 to 5, the pedicels 1.5 to 3.5 

 cm. long; involucre about 8 mm. high, the phyllaries linear-lanceolate, acuminate, 

 loose; raj's about 1 cm. long. 



22. Verbesina liebmannii Schultz Bip.; Klatt, Leopoldina 23: 144. 1887. 

 Verbesina variabilis Robins. & Greenm. Proc. Amer. Acad. 32: 47. 1898. 

 Chihuahua to Mexico and Oaxaca; type from Cumbre de Estepa, Oaxaca. 

 Shrubby, 1 to 1.5 meters high; stem puberulous; leaves chiefly alternate; 



petioles 2 to 15 mm. long, usually with corky auricles or decurrent wings at 

 base; blades lanceolate to rhombic-ovate, 5 to 11.5 cm. long, 1.5 to 5.5 cm. 

 wide, acuminate or acute at both ends, serrate or serrulate, usually rough above, 

 strigillose to pilose beneath chiefly on the veins; heads several or numerous, 

 cymose-panicled, the pedicels 1 to 3.8 cm. long; involucre about 2-seriate, 3 to 

 5 mm. high, the phyllaries chiefly ovate or oblong, obtuse or acutish; pales with 

 short, cuspidate, spreading or reflexed tips; rays 7 to 12 mm. long. 



23. Verbesina nelsonii Robins. & Greenm. Proc. Amer. Acad. 32: 46. 1896. 

 Known only from the type locality, between Ayusinapa and Petatlan, Oaxaca. 

 Herbaceous (?), stout; stem appressed-puberulous; internodes sometimes with 



a corky wing near summit; leaves oblong, 15 to 20 cm. long, 3.7 to 5 cm. wide, 

 acuminate, auriculate-amplexicaul at base, crenate-serrate, practically glabrous; 

 heads numerous, densely cymose-panicled; disk in fruit 8 to 10 mm. thick; 

 involucre barely 2-seriate, 4 mm. high, the phyllaries oblong, obtusish; pales 

 with spreading or reflexed cusps; rays 4 to 5 mm. long. 



