06 Proceedings of the Biological Society of Washington. 



Podopterus cordifolius Rose & Standi., sp. nov. 



Small tree with straggling pendent branches, the branchlets obscurely 

 puberulent or glabrous; petioles slender, about 4 mm. long, minutely pil- 

 ose; leaf blades oval-ovate, about 2.5 cm. long and 1.4 cm. wide, cordate 

 or subcordate at the base, obtuse or acutish at the apex, bright green, 

 slightly paler beneath, glabrous; racemes lateral, 2.5-3 cm. long, the flow- 

 ers slender-pedicellate, glabrous; calyx about 1 cm. long, the wings of 

 the segments 2-2.5 mm. wide, very thin, entire or somewhat undulate, 

 long-decurrent upon the pedicel. 



Type in the U. S. National Herbarium, No. 238935, collected along the 

 seashore at Manzanillo, Colima, Mexico, June 25, 1892, by M. E. Jones 

 (No. 103). 



Only two other species of the genus are known. The present one is 

 most nearly related to P. mexicanus Humb. & Bonpl., but in that the 

 leaves are broadly obovate and acute or acuminate at the base. P. 

 emarginatus Gross, described from Yucatan, is a very different plant with 

 large orbicular leaves, and may not be correctly referred to Podopterus. 



Ruprechtia occidentalis Standi., sp. nov. 



Shrub, about 3 meters high, with slender grayish branches, the branch- 

 lets strigillose at first; ocreae 2 mm. long; petioles 2-5 mm. long; leaf 

 blades narrowly elliptic-oblong, lanceolate, or oblanceolate, 3-8 cm. long, 

 1-2.5 cm. wide, obtuse to attenuate at the base, acutish to acuminate 

 at the apex, chartaceous or subcoriaceous, green and glabrous on the 

 upper surface, the costa prominent but the other venation inconspicuous, 

 slightly paler beneath, sparsely short-pilose or glabrate, the venation very 

 prominent and closely reticulate; staminate spikes slender, paniculate, 

 the flowers glabrous; pistillate racemes lateral, solitary or fasciculate, the 

 rachis 1-2.5 cm. long, the pedicels slender, 2-3 mm. long, short-pilose, 

 articulate near the apex; calyx in fruit 1.5-2.2 cm. long, short-pilose be- 

 low, glabrous above; inner calyx lobes linear, 4 mm. long, appressed- 

 pilose outside; achene ovoid, 8 mm. long, acuminate, thinly appressed- 

 pilose, deeply sulcate, the apex acutely triquetrous. 



Type in the U. S. National Herbarium, No. 636452, collected on a 

 dry hillside at San Bias, Sinaloa, Mexico, March 29, 1910, by J. N. Rose, 

 P. C. Standley, and P. G. Russell (No. 13630). The following additional 

 specimens belong here: 



Sinaloa: Culiacan, 1891, Palmer 1782, 1780. Ymala, 1891, Palmer 

 1710. 



Closely related to C. fusca Fernald, and perhaps only a variant of that 

 species. C. fusca, however, has broader, densely short-pilose leaves, 

 pubescent staminate flowers, and usually a larger fruiting calyx. 



Coccoloba acapulcensis Standi., sp. nov. 

 Glabrous throughout, the branches dark reddish brown; ocreae 8-12 

 mm. long; leaves mostly peltate, the petioles slender, 2.5-3 cm. long, 

 attached to the blade 8-14 mm. from the base, the blades orbicular or 

 nearly so, 5.5-8 cm. wide, rounded at both endgfor sometimes emarginate 

 at the base, subcoriaceous, slightly paler beneath, the venation prominu- 



