NATIVE WOODY PLANTS OF THE UNITED STATES 5 



Asimina pygmaea (Bartr. ) Gray. 



Pityothamnus pygmaeus (Bartr.) Small. 

 * Range : 30. 



Site : Well-drained, sun, shade. 

 Fruit: Berry, available July-August. 

 A small shrub with arching or decumbent stems. 



Asimina speciosa, see Asimina incana. 



Asimina triloba (L.) Dunal. Common papaw. 



Anona triloba L. 



Range : 20, 22, 24, 25, 27, 28, 29, 30. 



Site : Well-drained, moist, sun, shade. 



Fruit: Berry, available August-October. 



Commonly a large shrub to small tree, or rarely a large tree ; flowers March- 

 April ; thicket forming by means of suckers ; shrubby northward ; often per- 

 sistent and difficult to eradicate from fields ; thickets often vigorous and 

 dense ; a lepidoterous larva injures the flowers throughout a good portion of 

 its range, but when not attacked, fruit is abundantly produced ; otherwise gen- 

 erally free from insect enemies ; two forms are known, one with white, insipid 

 fruit ; the other with a yellow pulp, but these are not recognized botanically ; 

 propagation is by seed sown as soon as ripe; suckers are generally difficult to 

 transplant ; about 1,200 seeds per poiind, germination about 50 percent, about 

 250 usable plants per pound of seed. 



Stomach records: Gray fox, opossum. Observations: Probably much eaten 

 by birds; opossum, squirrel, raccoon; leaves refused by captive marsh rabbits. 



Astrophyllum dumosum, see Choisya dumosa. 

 Atragene americana, see Clematis verticillaris. 

 Atragene columbiana, see Clematis columbiana. 

 Atragene occidentalis, see Clematis pseudoalpina. 

 Atragene pseudoalpina, see Clematis pseudoalpina. 



Atriplex spp. Saltbushes. 



Monoecious or dioecious shrubs with a salty taste ; the species harbor the 

 spinach mildew and consequently should not be planted where spinach is a 

 commercial crop. 



Stomach records (in addition to specific records) : Twenty -nine species of 

 birds, including Gambel quail ; white-sided jack rabbit, gray-sided jack rabbit ; 

 black-tailed deer. Observations (in addition to specific records) : Three species 

 of birds, including ring-necked pheasant ; Oregon jack rabbit, in dry seasons. 

 In general, of considerable importance as cover for plains wildlife. The salty 

 taste may flavor milk and possibly have a bad effect on unweaned calves, 

 lambs, and kids, although the same taste appears to increase the palatability 

 to livestock. 



Atriplex breweri Wats. Brewer saltbush. 



A. lentiformis breweri (Wats.) Hall and Clem., A. orbicularis Wats. 

 Range : 1, 5. 



Site: Dry, well-drained, sun. 

 Fruit : Achene. 



A large monoecious or dioecious shrub with abundant foliage ; rapid growing ; 

 very tolerant of salinity ; foliage subject to leaf-mining insects ; much culti- 

 vated, especially as a clipped hedge plant ; seeds produced in abundance ; occurs 

 on sand, clay, and other soils. 



Observations: California mule deer. Freely browsed by livestock. 



Atriplex canescens (Pursh) Nutt. (pi. 4, C). Wingscale. 



Calligonum canescens Pursh, A. garrettii Rydb., A. macropoda Rose and 

 Standl., A. linea-ris Wats. 

 Range : 7, 8, 9, 10, 11, 15, 16, 17. 

 Site: Dry, sun. 



Fruit : Achene, available August-September. 



A small or rarely large, rapid-growing evergreen shrub; dioecious or rarely 

 monoecious ; tolerates alkali but not necessarily found on alkaline soil ; root 

 system extensive; taproots 30-40 feet deep; extremely drought resistant; will 



