DEC. 1907. SPERMATOPHYTES FROM MEXICO GREENMAN. 269 



July, 1904, Chas. F. Baker & Percy Wilson, no. 292 (hb. Field 

 Mus.); Managua, 23 September, 1904, Carl F. Baker, no. 

 1554 (hb. Field Mus.); Madruga, 23 November, 1904, A. H. 

 Curtiss, no. 528 (hb. Field Mus.). ' 



Var. tenuis Greenman, var. nov. 



Similar to the species, but with smaller and more slender stems : 

 leaves 2.5 to 6 cm. long, 0.5 to 2.2 cm. broad. CUBA. Province 

 of Pinar del Rio: Herradura, 30 September, 1904, Carl F. 

 Baker, no. 2154 (hb. Field Mus.); Herradura, 24 August, 1905, 

 H. A. Van Hermann, no. 705 (hb. Field Mus.). 



The species here described resembles W. reticulata DC. ; but 

 the oblong or oblong-lanceolate outline of the leaves with their 

 distinctly pinnate venation and entire or slightly crenate margin, 

 the shorter involucral bracts, and the peculiar uncinate-tipped 

 pales amply distinguish it from the De Candolle species. 



Perymenium Goldmanii Greenman, sp. nov. 



Stem terete or slightly tetragonal, striate, strigillose: leaves 

 opposite, petiolate, ovate-lanceolate, 3 to 8 cm. long, i to 4 cm. 

 broad, acuminate, acute, dentate to subentire, rounded to sub- 

 cordate at the base, scabrous above and becoming slightly 

 rugose in age, hirsutish-pubescent beneath, green on both sides, 

 3-nerved from near the base; petioles 3 to 10 mm. long; inflores- 

 cence terminating the stem and the horizontally spreading or 

 ascending lateral branches in rather dense cymose clusters: 

 heads numerous, small, 6 to 7 mm. high, about 3 mm. in diameter, 

 radiate; primary and secondary peduncles short, usually less 

 than 2 cm. in length, appressed-pubescent ; involucre subcampan- 

 ulate; bracts of the involucre unequal, 2-3-seriate, the outer 

 shorter, ovate to ovate-oblong, 3 to 4.5 mm. long, acute or ob- 

 tuse, externally strigillose, ciliate: ray-flowers commonly 5; 

 rays lemon-yellow: disk-flowers about 20: pappus of numer- 

 ous unequal setae: mature achenes laterally compressed or 

 somewhat 3 -angled, about 2.5 mm. long, ciliate or narrowly 

 winged, transversely rugose under a lens and slightly pubes- 

 cent on the surface especially in the upper half. MEXICO. 

 State of Campeche: Apazote, near Yohaltun, 27 to 29 December, 

 1900, E. A. Goldman, nos. 487, 502 (hb. U. S. Nat. Mus., and 

 hb. Field Mus.). 



The affinity of the species here described is with P. micro- 

 cephalum Schz. Bip., and P. gracile Hemsl., but it differs from 

 the former by the larger leaves and from the latter in foliar and 

 achenial characters. The narrowly winged achenes of P. Gold- 

 manii suggest P. gymnolomoides DC., but that species has smaller 

 leaves, shorter petioles and fewer heads in the inflorescence. 



Notoptera Gaumeri, n. comb. Salmea Gaunter i Greenm. in Field 

 Col. Mus. Bot. Ser. iii. 124 (1904). 



The homogamous heads, the short accumbent involucre, 

 the characteristic ear-like wing on the posterior pappus-awn, 



