156 TEXAS RESEARCH FOUNDATION: CONTRIBUTIONS, VOLUME 5 
U 
a 
Fig. 57. Parathesis tartarea Lundell. 1, Flowering branch; X 4%. 2, Stem, showing scaly 
epidermis; X 5. 3, Calyx, spread out; X 5. 4, Flower; x 5. 5, Petal, inner surface; X 5. 
6, Stamen; x 5. 7, Pistil; x 5. Illustrated from type, Julian A. Steyermark 36023 (F), by 
Vivien Frazier. 
