Seed Plants, Ferns, Fern Allies of the Austin Region 17 



Tradescantia. 

 A form similar to T. virginiana. 



PONTEDERIACEAE Pickerel-Weed Family 



Heter -anther a dubia McM. (H. graminea Vahl.) Water Star-grass. 

 In Barton Creek. Submerged, but with its yellow flowers exserted. 

 Widespread throughout the United States in still water. 



BROMELIACEAE Pine-Apple Family 



Dendropogon usneoides Raf. (Tillandsia usneoides L.) Spanish 

 Moss. Long Moss. Florida Moss. 



Abundant on trees in ravines, as the valleys of Shoal Creek and 

 Waller Creek where the air is more moist than on the uplands. 

 Pendent in long festoons from the branches of the trees. 



Southern states and Central America. More common near the coast. 



Tillandsia recurvata L. Ball Moss. 



Abundant on trees on the uplands; growing in small tufts; not 

 pendent. , 



Texas, Mexico and tropical America. 



LILIALES 



MELANTHACEAE (Under Liliaceae) Bunch-Flower Family 



Schoenocaulon Drummondii A. Gray. 

 Dry soil, roadsides and hillsides in open places. 

 A prairie plant of Texas and Mexico. 



Toxicoscordion Nuttalii Rydb. (Zygadenus Nuttalii S. Wats.) 

 Level uplands of the Edwards Plateau. 

 A prairie plant of the southern central states. 



JUNCACEAE Rush Family 



J uncus dichotomus Ell. Rush. 

 Wet ground. 

 Mostly near the coast. Massachusetts to Texas. 



ALLIACEAE (Under Liliaceae) Onion Family 



Allium canadense L. Meadow Garlic. 



Moist ground, flood plain of Onion Creek. Most of the flowers 

 are replaced by bulblets. 



Eastern states. 



