194. MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 
Pinus venusta, see Abies veniusta. 
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 texrana. 
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 staminate, 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. pallens (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 flexvicaulis (Benth.) Small, Zygia 
flexicaulis Sudw., Hbenopsis flezicaulis (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 pygmaed. 
Pityothamnus angustifolius, see Asimina incana. 
Pityothamnus incanus, see Asimina incanda. 
Planera 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. 
