108 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
scales oblong, essentially glabrous except at the obtusish or barely 
acute tip: corolla 5 to 6 mm. long, about equalling the sordid pap- 
pus: achenes 4 mm. long, nearly glabrous. — Collected by Prof. 
C. Conzatti at Colonia Melchor Ocampo, Vera Cruz, Mexico, alti- 
tude 1,200 m., 8 December,.1895, no. 18, and by Prof. C. Conzatti, 
and V. Gonadlez in Canton de Cordoba, Vera Cruz, 27 December, 
1897, no. 637 in part. This noteworthy plant is clearly distinct 
from any Mexican species known to us, nor have we been success- 
ful in referring it to any South American species. In the genus It 
should, probably, be placed near I. cordifolia, from which, how- 
ever, it differs in the size, form, texture, and glabrous character of 
the leaves, which are more or less nigrescent in drying. We take. 
pleasure in dedicating the species to Mr. V. Gonzdlez, who as the 
able assistant of Professor Conzatti, has done much to further the 
knowledge of Mexican plants. 
Printed, August, 1899. 
