VOL. IV.] Trees of Southern California. 341 



waters of Mill Creek, San Bernardino Mountains, at 6000 feet 

 altitude. 



Ace7- macrophyllum Pursh. Small tree, 20 feet high, with 

 slender trunk; often in small clumps from a common root. Fls. 

 March; Fr. May. Common but not abundant in canons 

 on the southern slope of the San Bernardino Range, from San 

 Gorgonio Pass to Los Angeles, at about 2500 feet altitude. 



Negundo Californiciini T & G., Fl. i, 250. A^. aceroides 

 Moench., var. Californicu'ni Sargent, Gard. & For. ii. 364. 

 Acer CaU/onncum Greene Fl. Fr. 76. A. N'eguiido, I,., Coville, 

 1. c. 81. Tree 30 feet high, the trunk a foot in diameter. Leaves 

 pinnately 3-5 foliate. Fls. March. Rare. San Bernardino 

 Mountain, on a wet, rock}' flat in a cailon above Yucaipe, at 

 3500 feet altitude. 



Dalea arborescens Torr. The type is a fragment in the Torrey 

 Herbarium at Columbia College, ticketed, " Fremont's 2d Exped., 

 April 15, 1844. Mountains of San Fernando, a Southern continua- 

 tion of the Sierra Nevada. A small tree." According to Fremont's 

 Journal he was at that date in or near what is now known as 

 Antelope Valley. It has not been met with since, although the 

 region passed over by Fremont has been carefully examined with 

 a view to its rediscovery by Mr. Pringle and by the writer. 

 A low shrub, 3-4 feet high {6^j Parish, May, 1882, distributed 

 as D. Califojiiica^ growing in ravines of the Mojave Desert 

 at Fishponds, about 80 miles further east, agrees with the 

 description of the species except as to size and the numerous 

 deciduous yellow glands of the young shoots. The original 

 character given is "foe cglajidulosa," but the deciduous glands 

 might easily have been absent in the insufficient type specimen. 

 Prof. Sargent indicates in the Sylva that this is probably identi- 

 cal with the Fremontian plant. 



Dalea spinosa Gray. Small tree 25 feet high, with intricate, 

 bushy top; nearly leafless; the trunk, 10 inches in diameter, 

 of an ash-gray color, as are the branches and slender twigs. 

 Fls. June. Common in the dry washes of the Colorado Desert. 

 Agua Caliente, (Palm Springs;) Indio; Vallecito; Carriso; etc. 



Olneya Tesota Gray. Rough, spreading tree, 20 feet high, the 



