78 MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 
Bumelia schottii, see Bumelia spiniflora. 
Bumelia spinifiora 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. 
Bumelia 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. 
Bumelia 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 frutescens. 
Bursera lonchophylla, see Bursera odorata. 
Bursera odorata Brandeg. 
B. lonchophylla Sprague and Riley, B. tenuifolia Rose, B. purpusti Brandeg., 
Hlaphrium covillei Rose, H. confusum Rose, H. brachypodum Rose, LE. 
odoraium (Brandeg.) Rose. 
Range: 10. 
Site: Dry, well-drained, sun. 
Fruit: Drupe, resembling a capsule. 
A small tree; usually occurs on calcareous soil. 
Bursera microphylia Gray. Elephant tree. 
Elaphrium microphyllum (Gray) Rose. 
Range: 5, 10. 
Site: Dry, sun. 
Fruit: Drupe; resembling a capsule, available in October. 
A large shrub to small or large tree; fiowers in June. 
Butneria fertilis, see Calycanthus fertilis. 
Butneria florida, see Calycanthus florida. 
Butneria mohri, see Calycanthus mohri. 
Butneria nana, see Calycanthus fertilis. 
Butneria occidentalis, see Calycanthus occidentalis. 
Buxella brachycera, see Gaylussacia brachycera. 
Buxus chinensis, see Simmondsia chinensis. 
Calliandra chamaedrys, see Calliandra eriophylla. 
Calliandra conferta, see Calliandra eriophylla. 
Calliandra eriophylla Benth. False-mesquite. 
Fs Engelm., C. conferta Benth., Anneslia eriophylla (Benth.) 
ritt. 
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. Obser- 
vations; Gambel, scaled, and Mearn’s quail. Highly palatable to livestock. 
