176 
which he had acquired in his native village as a boy to good use in 
making large collections of the then little known plants growing in 
the neighborhood of his home. These brought him the correspond- 
ence of Asa Gray and other botanists, who induced him to extend 
his botanical excursions, and in 1885 he was able to devote several 
months to exploring a part of southwestern Texas which had not 
been previously visited by botanists. After this journey, rich in 
many discoveries, his profitable dairy farm kept him at bome for 
several years, but now relieved from the cares of business, Mr. 
SILVA OF NORTH AMERICA. 
ROSACEA. 
Reverchon has recommenced botanical work and is devoting him- 
self to collecting the still imperfectly known plants of eastern 
Texas. Reverchonia, a genus of the Euphorbia family, was named 
in his honor by Asa Gray, and the name of Reverchon is also asso- 
ciated with the flora of his adopted state in species of Gyrostachys, 
Andrachne, Aristida, Muehlenbergia, Panicum, Vicia, Hedeoma, 
Campanula, Psoralea, Petalostemon, and Astragalus, discovered by 
him. 
EXPLANATION OF THE PLATE. 
Pirate DCCI. CratecGus GLABRIUSCULA. 
WCOAADTP wre 
. A flowering branch, natural size. 
. Vertical section of a flower, enlarged. 
. A calyx-lobe, enlarged. 
. A fruiting branch, natural size. 
. Cross section of a fruit, natural size. 
. A nutlet, rear view, enlarged. 
. A nutlet, side view, enlarged. 
- Leaf of a shoot with a stipule, natural size. 
A leaf, natural size. 
