68 TEXAS RESEARCH FOUNDATION: CONTRIBUTIONS, VOLUME 5 
Fig. 20. Parathesis microcalyx Donn. Sm. 1, Flowering branch; X 14. 2, Calyx, spread 
out; X 5. 3, Flower; X 5. 4, Pistil; x 5. Illustrated from type, H. Pittier 7591 (US), 
by Vivien Frazier. 
