134 DUDLEY MEMORIAL VOLUME 



AMYGDALUS FASCICULATA (Torr.) Greene. 



Amygdalus fasciculata Greene, Fl. Franciscana 49. 1891. 

 Emplectocladus fasciculata Ton. Smith. Contr. VI, (PI. Fremont. 10. t. 5. 



1854.) 

 Prunus fasciculata Gray, Proc. Am. Acad. 10: 70. 1874. 



Leaves oblanceolate-spatulate, 6 to 12 mm. long, 1.5 to 2 mm. broad, 

 gradually narrowed toward the base to an indistinct petiole, obtuse or some- 

 times acute at the apex, rather pale green and hirsute pubescent on both 

 surfaces or sometimes very sparingly pubescent, only the midvein apparent, 

 the margin entire or very rarely somewhat dentate and the teeth either 

 glandular or eglandular. Flowers about 6 mm. in diameter, 1 to 3 on short 

 spurs and sessile; the calyx glabrous without but hairy within, the tube 

 about 2 mm. long, the lobes 1.5 mm. long; petals apparently white, oblan- 

 ceolate. Fruit ovoid, when dry 8 to 10 mm. long, 7.5 mm. broad and 7 mm. 

 thick borne on a pedicel 1.5 mm. long, the dry exocarp pubescent and 

 dehiscent along one edge; stone about 8.5 mm. long, 6.5 mm. broad and 

 6 mm. thick, rounded at the base, pointed at the apex, somewhat winged and 

 with a shallow groove on the ventral edge, the surface smooth. 



A shrub with grayish or often whitish bark, numerous straight, scarcely 

 spinescent branches, and sometimes pubescent young growth. The specimens 

 from which this species was originally described were collected by Colonel 

 Fremont, but their labels had been lost and the locality from which they 

 were obtained is therefore unknown, though the author of the species says 

 "Sierra Nevada of California; probably in the southern part of the range." 

 The species is known to occur from southern Utah through southern Nevada 

 and northern Arizona to the slopes of the southern Sierra Nevada, and the 

 San Bernardino Mountains of California. A specimen has also been seen 

 labeled "Santa Maria, Santa Barbara County, California." 



Specimens examined: Utah; southern Utah, C. C. Parry, 1874. St. 

 George, at 2000 ft. alt., M. E. Jones No. 1630, April 5, 1880. Southern 

 Utah, Dr. Palmer No. 135, 1877. Valley of the Virgin, C. C. Parry No. 56, 

 1874. St. George, Dr. Palmer, 1871. Silver Reef, M. E. Jones, 1894. 



Nevada; Morman Mts., Lincoln Co., at 6000 ft. alt., Kennedy and 

 Gooding No. 140, July, 1906. Rocky hillsides, Calientes, L. N. Gooding 

 No. 609, April 26, 1902. Kernon, L. N. Gooding No. 652, April 28, 1902. 

 Washes in the Palmetto Range at 6-7000 ft. alt., C. A. Purpus No. 5852, 

 May-Oct., 1898. 



Arizona; On trip to Castle Rock, near Tucson, D. Griffiths No. 2119, 

 Nov. 17, 1900. Without locality, Dr. Palmer, 1876. Choride, at 4500 ft. 

 alt, M. E. Jones, April 14, 1903. 



