136 DUDLEY MEMORIAL VOLUME 



glaucous appearance turning reddish gray with age. Originally described 

 from the "Foothills of the eastern side of the Sierra Nevada, near Carson." 

 It appears to be rather common in the eastern Sierra Nevada and the foot- 

 hills of both California and Nevada from the vicinity of Reno in Nevada 

 southward to Owens Valley in California. 



Specimens examined: Nevada; Hawthorne, at 6000 ft. alt., M. E. 

 Jones, April 15, 1907. Verdi, Washoe Co., C. F. Sonne, May, 1895. Foot- 

 hills northwest of the University Reno, P. B. Kennedy, April 22, 1901. 

 Near Carson City, C. L. Anderson, 1866. Near Empire City, J. Torrey No. 

 136, 1865. Carson City, at 5000 ft. alt., S. Watson No. 299, April, 1868. 

 King's Canyon, Ormsby Co., Nev., at about 6000 ft. alt., C. F. Baker No. 

 907, June 1 and July 1, 1902. Empire City, Nevada, M. E. Jones No. 

 3856, May 19, 1882. Candelaria, W. H. Shockley, 1890. Carson Valley, 

 J. C. Phillips and C. S. Sargent, Sept.-Oct., 1878. Reno, F. H. Hillman, 

 Oct., 1893. Miller Mts., at 7500 ft. alt., W. H. Shockley No. 1216, May 

 18, 1882. Near Carson City, C. L. Anderson No. 217, 1864 and Mar., 1865. 

 Near Woodford, border of Nevada, J. Ball, July, 1884. Carson Flats, J. D. 

 Hooker and Asa Gray, 1877. Reno, J. D. Hooker and Asa Gray, 1877. 



California; White Mts., at 5-6000 ft. alt., C. A. Purpus No. 5805, 

 May-Oct, 1898. Lone Pine, at 7000 ft. alt., M. E. Jones, May 14, 1897. 

 Base of White Mts. east of Laws, Inyo Co., A. A. Heller No. 8186, May 5, 

 1906. Beckwith Pass, H. N. Bolander. Camp Bidwell, D. W. Mathews, 

 1879. Owens Valley desert, Dr. W. Matthews, April, 1877. 



AMYGDALUS FREMONTI (S. Wats.) Abrams. 



Amygdalus fremonti Abrams, Bull. N. Y. Bot. Card. 6: 384. 1911. 

 Prunus fremonti S. Wats. Bot. Calif. 2 : 442. 1880. 



Leaves with petioles 3 to 4 mm. long, ovate to nearly orbicular, rounded 

 or sometimes subcordate at the base, obtuse or acute at the apex, 12 to 

 25 mm. long, 10 to 18 mm. broad, pale green above, grayish or sometimes 

 even somewhat silvery below and marked with reddish brown veins, glabrous 

 on both surfaces, the margins strongly crenate-dentate and the teeth gland- 

 ular. Flowers appearing in March with the leaves, solitary or in fascicles 

 of two or more on pedicels 8 to 12 mm. long; calyx with ciliate lobes; the 

 corolla about 12 or 15 mm. broad; the ovary densely pubescent. Fruit 

 pedunculate, about 12 mm. in diameter, the exocarp apparently dry and de- 

 hiscing along the ventral side ; stone oblong and turgid, about 1 2 mm. long, 

 10 mm. broad, and 8 mm. thick, rounded on the dorsal side and with a 

 thick wing on the ventral side. 



