Mathewsiane. : N. O. Orchideze. 
TAB. CXVII. 
PACHYPHYLLUM PARVIFOLIUM, Lindl. : 
Foliis ovalibus planis, spicis subaequalibus, labello mutico. Lind. 
Has. Chacapoyas, Peru. Mathews, 1836. 
Hitherto only one species of this Genus has been described, 
the P. distichum of Humboldt and Kunth (Nov. Gen, et Sp. v. 1. 
¢. 77.) an inhabitant of Loxa and Gonzanain Peru. From that 
our plantis abundantly distinguished by its much slenderer stems, 
smaller and by no means falcate leaves, and by the few (appar- 
ently constantly) 3-flowered spikes. The sepals are singularly 
grooved and carinated : the labellum, (scarcely differing in form 
from the petals) is destitute of tubercles, which have been con- 
sidered an essential character of the Genus: but Professor 
Lindley doubts whether those represented by Humboldt are not 
so done by mistake. 
Fig. 1. Spike of flowers. jf. 2. Single flower, side view. f. 3. 
Column and petals. jf. 4. Lateral sepal. f. 5. Pollen-mass :— 
magnified. 
