78 MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 
Bumelia schottii, see Bunielia spini flora. 
Bumelia spiniflora DC. Saffron-plum. 
B. angustifolia Nutt., B. schottii Britt. 
Range : 17, 31, 32. 
Site: Well-drained, sun. 
Fruit : Drupe, available April-May. 
A large shrub to a small or rarely large tree ; evergreen ; flowers November- 
January ; propagated by seed. 
Bunielia tenax Willd. Tough buckthorn. 
Range : 29, 30, 31, 32. 
Site: Dry, well-drained, sun. 
Fruit : Drupe, available September-November. 
Most commonly a small to large shrub; sometimes a small to large tree; 
evergreen southward ; flowers May-July ; spiny or unarmed ; may occur on 
sand. 
Bunielia texana Buckl. 
Range: 16, 17. 
Site : Dry, sun. 
Fruit : Drupe. 
A large shrub to small tree ; evergreen ; branches rigid and thorny. 
Buphthalmium frutescens, see Borrichia friitescens. 
Bursera lonchophylla, see Bur^sera odorata. 
Bursera odorata Brandeg. 
B. loncJiophylla Sprague and Riley, B. tennifolia Rose, B. purpusii Brandeg., 
Elaplirium covillei Rose, confusum Rose, E. brachypodum Rose, E. 
odoratutn (Brandeg.) Rose. 
Range : 10. 
Site : Dry, well-drained, sun. 
Fruit : Drupe, resembling a capsule. 
A small tree ; usually occurs on calcareous soil. 
Bursera microphylla Gray. Elephant tree. 
Elaphrium micropJiylhim (Gray) Rose. 
Range: 5, 10. 
Site: Dry, sun. 
Fruit : Drupe ; resembling a capsule, available in October. 
A large shrub to small or large tree ; flowers in June. 
Butneria fertilis, see Calycanthus fertUis. 
Butneria florida, see Calycanthus florida. 
Butneria mohri, see Calycanthus mohri. 
Butneria nana, see Calycanthus fertilis. 
Butneria occidentalis, see Calycanthus occidentalis. 
Buxella brachycera, see Gaylussacia Jjrachycera. 
Buxus chinensis, see Simniondsia chinensis. 
Calliandra chamaedrys, see Calliandra eriophyUa. 
Calliandra conferta, see Calliandra eriophylla. 
Calliandra eriophylla Benth. Talse-mesquite. 
C. c?iamaedrys Engelm., C. conferta Benth., Anneslia eriophylla (Benth.) 
Britt. 
Range : 10, 11, 16, 17. 
Site: Dry, sun. 
Fruit: Legume, available May-August. 
A small, somewhat prostrate, densely-branched shrub ; occurs on sandy and 
other soils ; flowers March-May ; seed germination 64 percent. 
Stomach records: Masked bobwhite, bobwhite, antelope jack rabbit. Odser- 
vations: Gambel, scaled, and Mearn's quail. Highly palatable to livestock. 
