466 AMYGDALACEAE 



1. Primus emarginata (Dougl.) Walp. Bitter Cherry. Fig. 2520. 



Cerasus emarginata Dougl. ex Hook. Fl. Bor. Amer. 1: 169. 1834. 



Prunus emarginata Walp. Rep. 2: 9. 1843. 



Cerasus glanditlosa Kell. Proc. Calif. Acad. 1 : 59. 1855. 



Cerasus arida Greene, Proc. Biol. Soc. Wash. 18. 57. 1905. 



Shrub or small tree 1-6 m. high, with smooth bark, young twigs reddish. Leaves oblong- 

 obovate to oblanceolate, acute or acutish at apex, narrowed to near the base, 2-5 cm. long, 

 glandular-serrate, glabrous above and nearly so beneath at least at maturity; flowers appearing 

 with the leaves in small corymbose clusters; hypanthium campanulate, glabrous, about 3 mm. 

 high ; sepals oblong, obtuse, about 2 mm. long ; petals obovate, 6-7 mm. long ; drupe 6-8 mm. in 

 diameter, bright red, very bitter and astringent ; stone ellipsoid, somewhat pointed at each end. 



Mountain slopes and stream banks, Upper Sonoran and Transition Zones; Vancouver Island and southern 

 British Columbia to western Montana and southern California. Type locality: "On the upper part of the Colum- 

 bia River, especially about the Kettle Falls." In addition to the cited synonyms, several other segregates have 

 been proposed by Greene. April-May. 



Prunus emarginata var. mollis (Dougl.) Brewer in Brewer & Wats. Bot. Calif. 1: 167. 1876. Tree, 

 10-20 IP. high. Leaves 3-8 cm. long, elliptic to obovate, obtuse or acute, tomentose beneath; pedicels and hypan- 

 thium pubescent. Open woods, Humid Transition Zone; Vancouver Island, western Washington, and western 

 Oregon. Originally collected by Douglas near the mouth of the Columbia River. 



2. Prunus subcordata Benth. Sierra Plum. Fig. 2521. 



Prunus subcordata Benth. PI. Hartw. 308. 1849. 



Shrub 1 . 5-3 m. high with straggly and rather rigid or somewhat spinescent branches, young 

 twigs glabrous or puberulent, red-brown becoming gray-brown in age. Leaves 2-5 cm. long, 

 elliptic-ovate to suborbicular, obtuse or rounded at apex, obtuse to subcordate at base, serrulate, 

 glabrous or more or less pubescent ; petioles 4-10 mm. long ; flowers 2-4 in a cluster ; pedicels 

 glabrous or pubescent, 8-15 mm. long; hypanthium campanulate, 4-5 mm. high, glabrous or 

 pubescent; sepals about equaling or shorter than the hypanthium, glandular-ciliate ; petals 

 obovate, 4-6 mm. long; drupe broadly ellipsoid, 16-20 mm. long, reddish-purple, edible; stone 

 somewhat flattened, the sides nearly smooth except 2-3 low ridges, edges prominently keeled. 



Mountain slopes or canyons, Transition Zones; Douglas and Lake Counties, Oregon, to Tulare County and 

 Santa Cruz County, California. Type locality : Sierra Nevada, probably along the American River. March-May. 



Prunus subcordata var. oregana (Greene) Wight, U.S. Dept. Agric. Bull. 179: 33. 1915. Leaves ovate, 

 abruptly acute or short-acuminate, more or less pubescent; ovary and young fruit densely tomentose; drupe rather 

 narrowly ellipsoid, about 2 cm. long, dark red, more or less pubescent. Klamath County, Oregon, and Modoc 

 County, California. 



Prunus subcordata var. Kelloggii Lemmon, Pittonia 2: 67. 1890. Drupe yellow, and larger with more 

 and sweeter pulp. This is probably only a minor variant of the species. It is found from the Mount Shasta 

 region to Sierra County, California. 



3. Prunus Fremontii S. Wats. Desert Apricot. Fig. 2522. 



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



Amygdalus Fremontii Abrams, Bull. N.Y. Bot. Gard. 6: 385. 1910. 



Prunus eriogyna Mason, Journ. Agric. Research 1: 168. /. 5. 1913. 



Rigidly branched shrub or small tree, 2-3 m. high with brownish glabrous often spine-tipped 

 twigs. Leaves deciduous, broadly ovate to suborbicular, serrate, 10—25 mm. long, glabrous; 

 petioles slender, 3-4 mm. long; flowers solitary or in few-flowered clusters; pedicels 8-12 mm. 

 long; sepals ciliate ; corolla 12-15 mm. broad; drupe about 12 mm. in diameter with a dry 

 exocarp ; stone turgid, about 12 mm. long, rounded on the dorsal side, and with a thick wing on 

 the ventral side. 



Desert slopes, Upper and Lower Sonoran Zones; Chuckawalla Mountains, southern California, to northern 

 Lower California. Type locality: Oriflamme Canyon, San Diego County, California. Feb.-April. 



4. Prunus Andersonii A. Gray. Desert Peach. Fig. 2523. 



Prunus Andersonii A. Gray, Proc. Amer. Acad. 7: 337. 1868. 

 Amygdalus Andersonii Greene, Fl. Fran. 49. 1891. 



Rigidly branched shrub, 1-2 m. high, armed with divaricate spinescent branchlets. Leaves 

 fascicled, oblanceolate, 1-2 cm. long, narrowed to the subsessile base, obscurely serrulate, gla- 

 brous, pale green ; flowers usually solitary on short spurs ; pedicels 5-8 mm. long ; hypanthium 

 glabrous, 2.5 mm. high, sepals 3 mm. long, narrowly lanceolate-triangular; petals broadly 

 obovate, 5-6 mm. long, rose-colored ; drupe appressed-globose, 10-14 mm. long, densely brownish- 

 tomentulose ; pulp thin and rather dry ; stone somewhat roughened. 



Desert slopes and mesas, Upper Sonoran Zones; eastern slopes of the Sierra Nevada from Modoc County to 

 Inyo County, California, east to western Nevada. Type locality: "Foothills of the eastern side of the Sierra 

 Nevada, near Carson," Nevada. March-April. 



5. Prunus fasciculata (Torr.) A. Gray. Desert Almond. Fig. 2524. 



Emplectocladus fasciculatus Torr. PI. Frem. 10. pi. 5. 1853. 

 Prunus fasciculata A. Gray, Proc. Amer. Acad. 10: 70. 1874. 

 Amygdalus fasciculata Greene, Fl. Fran. 49. 1891. 

 Lycium Spcncerae J. F. Macbride, Contr. Gray Herb. 53: 18. 1918. 



Shrub 1-2 m. high, with pale gray bark, and divaricately branching often spine-tipped 

 branches, usually pubescent when young. Leaves clustered on short stubby branchlets, deciduous, 

 oblanceolate -spatulate, 8-15 mm. long, narrowed to an indistinct petiole, pale green and pubes- 



