ROBINSON AND GREENMAN. — GENUS VERBESINA. 557 



c. Lower surface of the leaves sordid-pubescent on the veins beneath : involucre 



saucer-shaped or at length reflexed by the enlargement of the globose head : 

 W. Indian. 



78. V. LEPROSA, Klatt, Leopoldina, xx. 93. — Morne Rouge, Mar- 

 tinique, Hahn, no. 1214. 



d. Lower surface of the leaves tawny-tomentose : involucre as in the jjreceding: 



wings of the achenes variable in the same head and often very unequal and 

 adnate to the pappus-awn in manner of Otopappus : Mexican. 



79. V. OLiVACEA, Klatt, 1. c. 93. V. oaxacana, Klatt, 1. c. xxiii. 

 144, not DC. Otopappus oUvaceus, and 0. oaxacanus, Klatt, Ann. 

 Naturh. Hofmus. Wien, ix. 362. — S. Mexico, Hacienda de la Laguna, 

 Schiede, no. 340; Mirador, at Consaquitla, Llehmann, no. 540 {V. lep- 

 7'osa, Klatt, Leopoldina, xxiii. 143, not 1. c. xx. 93 ; also the undescribed 

 V. Sartorli, Sch. Bip. ace. to Klatt, 1. c. xxiii. 143), and at Trapiche de 

 la Coucepcion, Liehmann, no. 543 (by clerical error cited as no. G14 by 

 Klatt, 1. c). 



•H- ++ Heads somewhat smaller, in fruit 7 to 9 mm. in diameter. 



= Tips of the pales recurved. 



80. V. Seemannii, Sch. Bip. in Seem. Bot. Herald, 306; Hemsl. 



1. c. 190. — N. AV. Mexico, Sierra Madre, Seemann^ no. 2027 (with well 



developed pappus) ; S. W. Chihuahua, Palmer^ no. 324 (with pappus 



reduced). 



= = Tips of the pales straight. 



a. Heads 14 to 25 in a rather small corymb ofren surpassed by the leaves : cortex of 

 the branches gray, soon glabrate : pedicels tomentose with spreading hairs. 



81. V. ABSCONDiTA, Klatt, Leopoldina, xx. 93. — Mexico, without 

 locality, Ehrenherg ^ no. 837. Although characterized as being an herb 

 and as having 5-piloso-costate achenes, this species proves (from a detailed 

 drawing by Klatt) to be the plant formerly described by us as V. Smithil, 

 Proc. Am. Acad, xxxii. 46, and its range may be more definitely given 

 as follows: Jaycatlan, Oaxaca, altitude 1,300 m., L. C. Smith, no. 132 ; 

 limestone ledges, near Tehuacan, Puebla, Pfingle, no. 7497. 



h. Branches not lanate : heads very numerous in broad corymbs; pedicels silky- 

 canescent with subappressed hairs. 



82. V. PERYMENioiDES, Sch. Bip. in Klatt, 1. c. xxiii. 143. — S. 

 Mexico, Yavesia, Liehmann, no. 330; Oaxaca, C. & E. Seler, no. 33, 

 Pringle, no. 4804; L. C. Smith, nos. 216, 295, 898 (smoothish formj; 

 E. W. Nelson, no. 1507. 



