348 Field Museum of Natural History Botany, Vol. II 



1350 m., February, 1907, H. von Tuerckheim, no. II. 1602, and March, 

 1907, no. II, 927 in part (hb. Field Museum). 



Perymenium strigillosum Greenman, comb. nov. P. grande Hemsl., 



var. strigillosum Rob. & Greenm. Proc. Am. Acad, xxxiv. 529 (1899); 



Jones 1. c. xli. 166 (1905). Zexmenia fasciculata Coulter in J. D. 



Smith's Enum. PI. Guat. iv. 86 (1895), not Gray. 



Fruticosum; caule subtetragono 4-sulcato strigilloso; foliis oppositis 

 petiolatis ovato-lanceolatis 0.5-2 dm. longis 1-6.5 cm - latis acuminatis 

 acutis crenato-serratis basi cuneatis integris utrinque hispidis supra 

 basin 3-nerviis; petiolis usque ad 4 cm. longis et pedunculis adpresse 

 pilosis; inflorescentiis paniculato-cymosis terminalibus ; capitulis nu- 

 merosis radiatis; involucri campanulati ca. 6 mm. alti squamis 2-3- 

 seriatis inasqualibus ovatis vel ovato-oblongis 3-6 mm. longis apice 

 obtusis vel subrotundatis plus minusve ciliatis extrinsecus strigillosis ; 

 ligulis conspicuis flavis elliptico-oblongis ca. 1.5 cm. longis 5 mm. latis; 

 pappi setis valde insequalibus numerosis; achaeniis maturatis 3-4 mm. 

 longis parce pubescentibus, radii triquetris 3-alatis, disci latero-com- 

 pressis et plus minusve 2-alatis, alis sursum productis pappo liberis. 

 Guatemala: Department of Santa Rosa, Cenaguilla, altitude 1200 m., 

 November, 1892, Heyde & Lux, no. 4244, exiccatee John Donnell Smith 

 (hb. Field Museum cat. nos. 264839, 264840) ; Department of Saca- 

 tipequez, Volcano Agua, altitude 2130-2285 m., 15 February, 1905, and 

 4 February, 1908, W. A. Kellerman, nos. 5326, 7425 (hb. Field Museum, 

 cat. nos. 195454, 224429). Department of Talapa, Volcano Imay, 

 altitude 1500 m., 8 January, 1908, W. A. Kellerman, no. 7040 (hb. Field 

 Museum, cat. no. 224250). San Salvador: Amatepeque Hill, near 

 San Salvador, altitude 1200 m., 2 February, 1907, H. Pittier, no. 1906 

 (hb. U. S. Nat. Museum, cat.no. 578308, fragments in hb. Field Museum). 



A re-examination of the material referred to Perymenium grande 

 Hemsl. by Robinson and Greenman in their revision of this genus 

 shows that the variety strigillosum may be clearly differentiated from 

 Mr. Hemsley's species by the appressed or strigillose pubesence on 

 stem, branches, inflorescence and petioles, by the uniformly shorter 

 and narrower involucral bracts, and by the thicker leaves. It seems 

 therefore best to regard this plant as a species rather than a variety, 

 hence it is here raised to specific rank and a description appended. 



Zexmenia elegans Schz. Bip., var. Kellermanii Greenman, var. nov. 

 A forma typica recedit foliis subtus pedunculisque strigoso-pubes- 

 centibus. Guatemala. Department of Izabal: Las Amates, 15 

 February, 1908, and 17 January, 1905, IF. A. Kellerman, nos. 7612, 

 5332 (hb. Field Museum). 



