14 SILVA OF NORTH AMERICA. LEGUMINOS. 
the author of papers on pomology and forestry published in the 
reports of the Kansas State Horticultural Society, and of a paper 
on Buchloé dactyloides, printed in the nineteenth volume of the 
Bulletin of the Torrey Botanical Club. 
tion to botany, in which he had been interested from boyhood, 
and made large collections of many new and little known plants. 
From 1892 to 1896 Mr. Plank contributed a long series of im- 
portant papers on the flora of Texas to Garden and Forest, and he is 
EXPLANATION OF THE PLATE. 
Pirate DCXXVII. Gueprtsia TExAna. 
1. A flowering branch of the staminate tree, natural size. 
2. A staminate flower, enlarged. 
3. A fruiting branch, natural size. 
4. Vertical section of a portion of a legume, natural size. 
5. Cross section of a seed, natural size. 
