194 MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 



Pinus venusta, see Abies venusta. 



Pinus virginiana Mill. Virginia pine. 



Range : 25, 27, 28, 29. 

 Site: Dry, well-drained, sun. 

 Fruit: Cone; mature in August of the second season, opening slowly, 



persistent up to 4 years. 



A large evergreen tree ; two-needled ; may grow on poor, light, sandy soils, but 

 thrives best on clay, loam, or sandy loam ; slow growing ; intolerant of shade ; 

 damage by insects slight ; not subject to any fungus threatening widespread de- 

 struction ; short-lived ; abundant seeder ; 62,000 seeds per pound, percentage of 

 fertile seeds high ; wood somewhat used commercially. 



Stomach records: Six species of birds, including bobwhite ; white-tailed deer. 



Observations: Six species of birds. 





 Piptolepis phillyreoides, see Forestiera phillyreoides. 



Pistacia mexicana, see Pistacia texana. 



Pistacia texana Swingle. 



P. mexicana- of auths., not H. B. K. 



Range: 11, 17. 



Site: Dry, well-drained, moist, sun. 



Fruit : Dry drupe. 



A large shrub to small or rarely large tree; dioecious; leaves semievergreen ; 

 commonly occurs on limestone soils ; as old trunks die new ones sprout from 

 the base ; highly drought resistant ; vigorously recuperative ; highly intolerant 

 of shade ; root system deep-penetrating ; largest trees often stamiuate, smaller 

 ones pistillate ; seed commonly without an embryo when fruit is ripe. Leaves 

 commonly eaten by goats. 



Pitavia dumosa, see Cneoridium dumosum. 



Pithecolobium brevifolium Benth. Huajillo. 



Havardia brevifolia- (Benth.) Small, H. pattens (Benth.) Britt. and Rose, 

 Zygia brevifolia Sudw. 

 Range: 17. 



Site: Well-drained, sun. 

 Fruit: Legume, available July-August. 



A small to large spiny evergreen tree ; commonly occurs in rich soils ; thicket 

 forming. 



Of some importance as winter browse for sheep and goats. 



Pithecolobium flexicaule (Benth.) Coult. Texas-ebony. 



Acacia flexicaulis Benth., Siderocarpos flexicaulis (Benth.) Small, Zygia 

 flexicaulis Sudw., Ebenopsis flexicaulis (Benth.) Britt. and Rose, Samanea 

 flexicaulis MacBr. 

 Range : 17. 



Site: Dry, well-drained, sun. 



Fruit: Legume; available in September, pods never shed. 

 A large shrub to large tree ; evergreen ; spiny ; slow growing ; wood very 

 durable ; locally used for fence posts ; very ornamental in bloom ; seeds eaten 

 by natives. 



Pityothamnus pygmaeus, see Asimina jtygmaea. 

 Pityothamnus angustifolius, see Asimina incana. 

 Pityothamnus incanus, see Asimina incana. 



Flanera aquatica (Walt.) Gmel. Planer-tree. 



Range: 20, 25, 29, 30. 

 Site : Moist, sun, shade. 

 Fruit: Dry, drupe, available April-May. 



A small to large tree ; fairly rapid growing, short-lived ; wood not used 

 commercially ; somewhat cultivated ; grows on many soils. 



Stomach records : Four species of birds ; composed 45.5 percent of food of 

 175 mallard ducks collected October-December in central Louisiana. Obser- 

 vations : Black duck ; ring-neck duck ; considered an important duck food ; 

 squirrels. 



Platanus sp. Sycamores. 



Observations (in addition to specific records) : goldfinch, band-tailed pigeon. 



