102 MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 
Cissus incisa (Nutt.) Des Moul. Treebine. 
Vitis incisa Des Moul. 
Range: 11, 16, 17, 20:22, 25, 29° 30; 3k. 
Site: Dry, well-drained, sun. 
Fruit: Berry, available in October. 
A vigorous evergreen tree occurring in sandy and other soils; flowers June— 
August; easily transplanted ; propagation is by seed or by division of the woody 
tubers. 
Observations: Birds especially fond of the berries. 
Cissus stans, See Cissus arborea, 
Citharexylum brachyanthum Gray. 
Range: 11, 17. 
Site: Dry, sun. 
Fruit: Drupe. 
A small, much-branched, somewhat spinose evergreen shrub. 
Citharexylum fruticosum L. Fiddlewood. 
C. villesum Jacq. 
Range: 17, 30, 31, 32. 
Site: Dry, sun. 
Fruit: Drupe. 
A large shrub to small tree; evergreen; flowers all year round; ordinarily 
oecurs in sandy soil. 
Citharexylum villosum, see Citharerylum fruticosum. 
Citrus trifoliata L. Bitter orange. 
Poncirus trifoliata (l.) Raf. 
Range: 17, 20, 29, 30. 
Site: Well-drained, sun. 
Fruit: Berry, availiable September—October. 
A small, thorny, thicket-forming tree; flowers April-May; a native of China 
but naturalized in the regions indicated; used as grafting stock for oranges; 
much cultivated. 
Cladothamnus campanulatus, see Rhododendron albifiorum. 
Cladrastis lutea (Michx.) Koch. Yellow-wood. 
Ranges 25. 2, 20. 
Site: Dry, well-drained, sun. 
Fruit: Legume, available September—October, persistent through win- 
ter or soon falling. 
A small to large tree; flowers May—June; ordinarily occurs on rich, eal- 
careous or neutral soil; propagated by Seeds sown in spring; very handsome 
in flower and much cultivated. 
Clematis spp. 
The species are propagated by seeds sown under glass in spring. 
Stomach records (in addition to specific records): Black-tailed deer. Ob- 
servations (in addition to specific records) : Goldfinch. 
Clematis addisonii Britt. Smooth clematis. 
Viorna addisonii (Britt.) Small. 
Range: 27, 28. 
Site: Well-drained, sun. 
Fruit: Achene. 
A shrubby vine; flowers in May; root system deep; stems weak. 
Clematis arizonica Heller. 
Viorna arizonica Heller. 
Range: 11. 
Site: Dry, sun. 
Fruit: Achene. 
A vine. 
Clematis bigelovii Torr. 
Viorna bigelovii (Torr.) Heller. 
Range: 14. 
Site: Well-drained, sun. 
Fruit: Achene. 
A vine. 
Clematis brevifolia, see Clematis ligusticifolia. 
