Seed Plants, Ferns, Fern Allies of the Austin Region 35 



MALACEAE Apple Family (Under ROSACEAE) 



Crataegus sp. Hawthorne. 



In thickets in rich woods; and on the banks of streams. Not com- 

 mon, except in gravelly soil east of Hyde Park. 



AMYGDALACEAE Plum Family (Under ROSACEAE) 



Prunus americana Marsh. Wild Yellow Plum. Red Plum. 

 Moist ravines. 

 Widespread in the eastern and central states. 



Prunus angustifolia Marsh. Chickasaw Plum. 

 Thickets. 

 Southeastern states. 



Padus serotina Agardh. (Pi~unus serotina Ehrh.) Black Cherry. 

 Wild Cherry. 

 Moist ravines. 

 Eastern and central states. 



MIMOSACEAE Mimosa Family (Under Legumimosae) 



Acacia filicoides Trelease. 

 Waste ground. 

 Southern central states. 



Acacia Roemeriana Schlecht. 



Hills of the Edwards Plateau. In dry soil. A spiny schrub. 

 Southern Texas and Mexico. 



Acuan Illinoensis Kuntze. (Desmanthus brachylobus Benth.) 

 Dry soil. A low plant without thorns. 

 Central and Gulf states. 



Acuan velutina Kuntze. {Desmanthus velutinus Scheele.) 



Dry, poor soil, roadsides, etc. A prostrate plant without thorns. 

 Southern and western Texas. 



Mimosa fragrans A. Gray. Cat Claw. 



Very common thorny shrub in the dry hillsides of the Edwards 

 Plateau. 



Morongia uncinate Britt. (Schrankw. uncinata Willd.) Sensitive 

 Briar. 

 Common on dry barren soil, along railroad tracks and roadsides. 

 Prostrate, its long, slender branches armed with prickles. 



