8 University of Texas Bulletin 



ANGIOSPERMS 

 I. MONOCOTYLEDONS 



PANDANALES 



TYPHACEAE Cat.tail Family 



Typha latifolia L. Cat-tail. 



In the ponds of the Insane Asylum and of the University campus. 



One of the most wide-spread of plants. In ponds throughout al- 

 most the entire northern hemisphere. 



NAIADALES 



ZANICHELLIACEAE, Pondweed Family (Under Naiadacease) 



Zanichellia palustris L. Horned Pondweed. 



Abundant in Barton Creek and the Asylum ponds, growing sub- 

 merged. A delicate, slender plant with narrow leaves. 



Widespread in the northern hemisphere. 



Potamogeton lucens L. Pondweed. 



Abundant in Barton Creek and in the ponds of the Asylum. Sub- 

 merged, except the flower stalks and flower clusters. 



Widespread in North America and Europe. 



ALISMALES 

 ALISMACEAE Water-plantain Family 



Sagittaria platyphylla J. G. Smith. Arrow-leaf, Arrow-head. 



Abundant in Barton Creek. Partly submerged. Its leaf blades and 

 clusters of white flowers exserted from the water. 



Ponds and swamps of the southern Mississippi Valley and Texas. 



POALES (GRAMINALES) 

 POACEAE (GRAMINEAE) Grass Family 



Tribe Ardropogoneae 



Amphilophis saccharoides (Sw.) Nash. Beard Grass. Abundant in 



dry ground. 

 Andropogon argyraeus Schult. Silver Beard Grass. 



Abundant in dry open grounds. 



Southeastern states. 



