Vol. 33, pp. 65-68 July 24, 1920 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



SIX NEW SPECIES OF PLANTS FROM MEXICO. 1 



BY PAUL C. STANDLEY. 



During the preparation of an account of the woody plants 

 of Mexico, the first portion of which is now being printed in 

 the Contributions from the National Herbarium, a few plants 

 have been found which can not be referred to any of the pub- 

 lished species. Six of these are here described as new. Four 

 of them (Podopterus, Ruprechtia, Coccoloba) belong to the fam- 

 ily Polygonaceae, one to the Aristolochiaceae, and one (Fend- 

 lerella) to the Hydrangeaceae. 



Aristolochia malacophylla Standi., sp. nov. 



Stems subterete, densely pilose with retro'rse, sericeous, whitish or 

 fulvous hairs, the internodes 6.5-10.5 em. long; petioles very stout, 1 cm. 

 long or shorter, densely pilose; leaf blades oval or elliptic-oval, about 

 12.5 cm. long and 7-8 cm. wide, cordate at the base, obtuse or rounded 

 at the apex, subcoriaceous, densely pilose on the upper surface with 

 slender soft appressed hairs; the venation prominulous, beneath loosely 

 sordid-tomentose, the lateral veins 7 on each side, arcuate; inflorescence 

 axillary, racemose, few-flowered, the flowers nearly sessile; ovary densely 

 sericeous; calyx short-pilose outside, the tube inflated, 1 cm. long, the 

 limb inflated at the base into a sac 2 cm. long and 1 cm. thick, the lip 

 about 5 cm. long, glabrous within, cleft into 3 linear lobes. 



Type in the U. S. National Herbarium, No. 462360, collected at Salto 

 de Zararacua, Uruapam, Michoacan, Mexico, October 10, 1904, by C. G. 

 Pringle (No. 13424). 



A relative, apparently, of A. tricaudata Duchartre, but in that the 

 leaves are glabrous on the upper surface and rounded at the base, and the 

 flowers are much larger, with a more deeply cleft calyx limb. 



1 Published by permission of the Secretary of the Smithsonian Institution. 

 12— Proc. Biol. Soc. Wash., Vol. 33, 1920. (65) 



