H4 FIELD COLUMBIAN MUSEUM BOTANY, VOL. III. 



Chichankanab 1498, 1753, 1950, Temax 2503; Itzimna, near Merida, 

 Mch. 14, Ccec. et Ed. Seler 3939. 



Called by the Mayas XIUHULUB. "A stem upon which fish are 

 strung." 



MONTANOA Llav. & Lex. Nov. Veg. Desc., 2:11. 



Heads heterogamous, radiate, rays neutral; disk flowers perfect, 

 fertile, tubular. Involucre in our species depressed hemispheric, of 

 herbaceous bracts imbricated in i series. Receptacle conic, chaffy, 

 the scales keeled, enlarging and becoming papery in fruit, enfolding 

 the achene and deciduous with it. Achene laterally compressed, hard; 

 pappus none. Pithy stemmed shrubs with showy white or purplish 

 corymbose heads. 



Montanoa Schottii Robinson & Greenman Proc. Am. Acacl, 35:518. 

 A dimming or reclinate shrub with slender terete stem, similar* 

 in habit [to Montanoa pauciflora Klatt] : leaves opposite, ovate usually 

 from a broad base, the upper 

 unlobed, the lower usually pal- 

 mately 3 lobed, unappendaged, ser- 

 rate, decidedly scabrous -above with 

 stiff white hairs arising from a 

 tumid, impressed base, sordid 

 iomentulose beneath, 9 (6-n) cm. 

 long: inflorescence of few-flow- 

 ered terminal and axillary cymes ; 

 branches divaricate, striate, 

 tomentulose ; peduncles slender, 

 flexuous, becoming hooked or 

 curved and rigid in fruit, tomen- 

 tulose : heads decidedly larger than 

 in the preceding species [M. pauci- 

 flora Klatt], 4.5-5 cm. across, disk 

 6-7 mm. high, 7-8 mm. broad; 

 ray flowers 8-10, disk flowers nu- 

 merous: involucral scales 5-8, linear or oblong-lanceolate, acute 7-10 mm. 

 long, pubescent: ligules about 10, white, spreading, oblanceolate tapering 

 to the base, 3 notched, emarginate or entire at the subacute apex, 2.2 

 {2-2.^) cm. long, faintly veined, glandular dotted beneath; corolla of disk 

 flowers pubescent; receptacle conic; scales at first acuminate, villous 

 above, ciliate, becoming in fruit keeled, closely conduplicate, broadly 

 cuneate, 10-11 mm. long, 10 mm. wide (when opened) the wings after 

 anthesis lengthening beyond the acumination which remains as an erect, 

 spinescent tip; the wings veiny, 2-3 lobed, crenate, glabrate or with a 

 few weak hairs at the summit; deciduous with the enclosed achene 

 (shown magnified 2^ diameters in the figure), the mature scales 

 papery, squarrose, forming a subglobose head 2-2.5 cm - i n diameter; 



*Original description in italics; additional description and notes are in body type. 



