116 MISC. PUBLICATION 303, U. S. DEPT. OF AGRICULTURE 
Cytisus scoparius (L.) Link. Scotch broom. 
Range: 1, 2, 4, 27, 28, 29. 
Site: Dry, well-drained, sun. 
Fruit: Legume, available August-September. 
A large evergreen shrub introduced from Europe but spreading in the regions 
indicated; flowers May—June; occurs most commonly on sand, but also on loam 
and clay; drought resistant; will grow on very poor soils; tolerant of saline 
conditions; will withstand considerable abuse in handling; claimed to be a 
weed in fields, especially sandy ones, but ordinarily regarded by farmers as 
not dangerous because it is easily burned off; has been used very successfully 
for erosion control on highway embankments along the Oregon coast; has been 
advocated as a renovater of barren soils because of the high potash content of 
its ash; considered by some authorities as in part parasitic on oak roots, but 
if so, is not an obligate parasite; 65,000 seeds per pound; propagated by seeds 
treated with hot water and sown in spring or by cuttings. 
Stomach records: California quail. Observations: Captive bobwhite; cotton- 
tail rabbit. Poisonous to livestock, but seldom touched by grazing animals. 
Dalea amoena, see Parosela fremontit. 
Dalea arborescens, see Parosela arborescens. 
Dalea argyrea, see Parosela argyrea. 
Dalea californica, see Parosela fremontii. 
Dalea emoryi, see Parosela emoryi. 
Dalea formosa, see Parosela formosa. 
Balea fremontii, see Parosela fremontii. 
Dalea frutescens, see Parosela frutescens. 
Dalea greggii, see Parosela greggii. 
Dalea humilis, see Parosela thyrsiflora. 
Dalea johnsonii, see Parosela fremontii. 
Dalea polyadenia, see Parosela polyadenia. 
Dalea saundersii, see Parosela fremontii. 
Dalea schottii, see Parosela schottit. 
Dalea scoparia, see Parosela scoparia. 
Dalea spinosa, see Parosela spinosa. 
Dalea thyrsiflora, see Parosela thyrsiflora. 
Dalea wheeleri, see Parosela fremontii. 
Daphne mezereum L. Mezereum. 
Range: 26, 27. 
Site: Well-drained, sun, shade. 
Fruit: Drupe, available August-September. 
A small to large, sparse shrub; introduced from Europe and western Asia 
but locally established in the regions indicated; flowers March—April. 
Observations: Eaten by songbirds. 
Dasiphora fruticosa, see Potentilla fruticosa. 
Datisca hirta, see Rhus typhina. 
Daubentonia cavanillesii, see Daubentonia drummondii. 
Daubentonia drummondii Rydb. Poisonbean. 
D. cavanillesii Standl., D. longifolia of auth. 
Range: 17, 20, 29, 30. 
Site: Moist, sun. 
Fruit: Legume. 
A large shrub; often occurs in sand; seeds very poisonous to sheep and goats 
but pods and green plants apparently not harmful. 
Daubentonia longifolia, see Daubentonia drummondii. 
Daubentonia thurberi, see Diphysa thurberi. 
Decachaena baccata, see Gaylussacia baccata. 
