NATIVE WOODY PLANTS OF THE UNITED STATES 209 
Psorodendron arborescens, see Parosela arborescens. 
Psorodendron californicum, see Parosela fremontit. 
Psorodendron fremontii, see Parosela fremontii. 
Psorodendron johnsonii, see Parosela fremontii. 
Psorodendron puberulum, see Parosela schottii. 
Psorodendron schottii, see Parosela schottii. 
Psorodendron spinosum, see Parosela spinosa. 
Psorcthamnus emoryi, see Parosela emoryt. 
Psorothamnus polyadenia, see Parosela polyadenia. 
Psorothamnus scoparius, see Parosela scoparia. 
Psorothamnus subnudus, see Parosela polyadenia. 
Ptelea spp. 
The species of this genus are apparently not well understood at present. The 
reduction of all to two species is without doubt open to question but since 
authorities do not agree on what is to be done with the P. trifoliata complex, 
it is offered here as one species. None is eaten by livestock. 
Ptelea angustifolia, see Ptelea baldwinii. 
Ptelea baldwinii Torr. and Gray. California hoptree. 
P. baldwinii crenulata Jeps., P. crenulata Greene, P. angustifolia Benth. 
Range: 3, 5, 9, 17. 
Site: Dry, well-drained, sun. 
Fruit: Samara. 
A large shrub to small tree; flowers April-May; about 7,000 seeds per pound. 
Ptelea crenulata, see Ptelea baldwinii. 
Ptelea microcarpa, see Ptelea trifoliata. 
Ptelea parvifolia, see Helietia parvifolia. 
Ptelea rhombifolia, see Ptelea trifoliata. 
Ptelea serrata, see Ptelea trifoliata. 
FPtelea tomentosa, see Ptelea trifoliata. 
Ptelea trifoliata L. Hoptree. 
P. microcarpa Small, P. tomentosa Raf., P. serraia Small, P. rhombifolia 
Heller. 
Range: 11, 16, 17, 20, 22, 28, 24, 25, 27, 28, 29. 
Site: Dry, well-drained, sun. 
Fruit: Samara; available in September, persistent until spring. 
A large shrub to small or very rarely a large tree; flowers in June; 18,350 
seeds per pound. 
Ptilocalyx greggii Torr. 
Coldenia greggti Gray. 
Range: 11. 
Site: Dry, sun. 
Fruit: Nutlet. 
A small, much-branched shrub. 
Purshia glandulosa Curran. Antelope brush. 
Kunzia glandulosa Greene, P. tridentata glandulosa Jones. 
Range: 10. 
Site: Dry, sun. 
Fruit: Achene, available August-September. 
A small to large evergreen shrub; flowers April—July. 
Observations: Hagerly eaten by California mule deer, 
Purshia tridentata (Pursh) DC. Antelope brush, 
Kunzia tridentata Spreng. 
Range: 4, 6, 7, 8, 9, 11, 12, 18, 14, 16. 
Site: Dry, well-drained, sun. 
Fruit: Achene, available in August. 
