26 PROCEEDINGS OF THE AMERICAN ACADEMY. 



having the involucre calyculate with 1 to 3 lanceolate herbaceous-tipped 

 bractlets. 



Var. rugosa. Habit, foliage, and inflorescence of the preceding 

 species: heads smaller, 5-10-flowered. — C. rugosa, Hemsl. Biol. Cent.- 

 Am. Bot. ii. 206. Calydermos rugosus, DC. Prodr. v. 670. — Cuerna- 

 vaca, Morelos, Berlandier, no. 1061 ; also in Orizaba, Bourgeaii, no. 

 3095 ; near Acapulco, Palmer, no. 52. 



Var. macrophylla. Leaves mostly much larger, 2\ to 3 inches 

 or more in length, half as broad, less rugose : pedicels often equalling or 

 considerably exceeding the 12-flowered heads: achenes nearly 1^ lines in 

 length, the pappus only a third as long. — Collected by H. von Tuerckheim 

 at Cohan, Dept. Alta Verapaz, altitude 4,300 feet, February, 1888, and 

 distributed as C. Zacatechichi in Dounell Smith's Guatemalan sets, no. 

 1345 ; also by Heyde 8^ Lux, at Laguna de Ayarza, Dept. Jalapa, 

 altitude 8,000 feet, distributed in same set as G. salmecefolia, no. 3782. 



I- -1- Scales of the pappus narrower, more numerous, equalling or exceeding 



the achenes. 



++ Involucre cylindrical, or narrowly campaiiulate, rather few-flowered ; scales 

 broad, scarious, glabrous or only the outermost herbaceous and somewhat 

 pubescent : pedicels less than an inch in length : plants pubescent. 



= Heads numerous, radiate, with ligules evident. 



a. Inflorescences terminal, cymose-paniculate or somewliat corymbose : heads 

 very numerous, small : involucre ecalyculate. 



14. C. integrifolia, Hemsl, Shrub, 4 to 8 feet high: leaves ovate- 

 lanceolate, attenuate at the apex, rounded or obtusish at the short- 

 petioled base, cuspidate-denticulate, varying from papillose-pubescent 

 and very scabrous to smoothish and lucid, 2 to A'k inches long, a third to 

 half as broad; the veins very prominent beneath : heads 15-20-flowered : 

 disk-flowers yellow ; ray-flowers 5, white, destitute of pappus. — Biol. 

 Centr.-Am. Bot. ii. 205. AUocarpiis integrifolius, DC. Prodr. v. 676. 

 — Originally collected in Mexico without more exact locality by Kar- 

 winski ; later in JMirador by Sart07-ius, by Liebmann, no. 418, and by 

 E. W. Nelson, no. 86 ; Chiapas, Ghiesbreght, no. 565 ; Cordova, Bourgeau, 

 no. 1751, and A. Gray ; near Orizaba, altitude 4,000 feet, Pringle, no. 

 5915, and E. W. Nelson, no. 2; Oaxaca, on the Sierra de San Felipe, 

 altitude 8,000 ieet, Pr ingle, no. 6111 ; Cieneguilla, L. C. Smith, no. 381 ; 

 between Panixtlahuaca and Jaquila, altitude 1,000 to 5,000 feet, E. W. 

 Nelson, no. 2389; City of Mexico, Mrs. D. H. Sheldon; Guatemala, at 

 Cohan, Dept. Alia Verapaz, altitude 4,300 feet, von Tuerckheim (no. 379 

 of Dounell Smith's sets) ; Guarda Viejo, Dept. of Guatemala, altitude 



