Seed Plants, Ferns, Fern Allies of the Austin Region 61 



Asclepias texana Heller. Milkweed. 

 Bee Creek. 

 Southern Texas. 



Asclepias verticillata L. Milkweed. 

 Occasional here. 

 Eastern and central states and Canada. 



Asclepiodora decumbens A. Gray. Milkweed. Antelope Horns. 

 Very abundant in dry, open ground. 

 Southern plains states and Mexico. 



Asclepiodora viridis A. Gray. Antelope Horns. 



Less common than the preceding species and smaller. 

 Southern states. 



Gonobolus laevis Michx. (Enslenia albida Nutt.) Climbing Milk- 

 weed. 



Valleys and moist bluffs. A climbing vine with leaves similar to 

 a morning glory vine. 



Southern states. 



Metastelma barbigerum Scheele. 



Hillsides of the Edwards Plateau. A slender, twining vine with 

 small glossy leaves and small white flowers. 



Texas. 



Philibertella crispa Vail. (Philibertia undulata Gray.) 

 Found occasionally on the hills of the Edwards Plateau. 

 West Texas and New Mexico. 



Vincetoxicum biflorum Heller. (Gonobolus biflorus Nutt.) Angle- 

 pod. 

 Common on dry uplands. 

 Arkansas and Texas. 



Vincetoxicum reticulatum Heller. {Gonobolus reticularis Englem.) 

 Angle-pod. 



In rich soil in woods and rocky hillsides. An ill-scented climbing 

 vine, with small mottled green flowers. 



Texas to Arizona and in Mexico. 



POLEMONIALES 

 DICHONDRACEAE Dichondra Family 



Dichondra carolinense Michx. 



In rich soil in dense woods, lawns, ets. Abundant. A creeping 

 plant with small round, or reniform leaves. 



Southeastern states. 



