Read about Prunus nana in the Standard Cyclopedia of Horticulture
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Prunus nana, Stokes (Amygdalus nana, Linn.). Russian Almond. Fig. 3227. Bush, 3-5 ft. high: lvs. narrowly elliptic or elliptic-lanceolate, 2 or 3 in. long, thick and rather stiff, scarcely pointed, lighter colored and the veins prominent beneath, smooth, the edges set with sharp spreading saw-like teeth: fls. usually solitary, rose-color or white, nearly 1 in. or less across, sessile, with or just preceding the lvs.: fr. small and hard, pubescent, bitter, with a large wrinkled sharp-pointed somewhat cordate, unequal-sided pit. Russia and W. Asia. B.M. 161. L.B.C. 12:1114.—This plant has been intro. into this country recently as a fr.-plant, although it possesses little merit for that purpose. It is cult, in Eu. for its fls. and it has been thought that the flowering almond of our gardens belongs to it; but our flowering almonds are P. triloba and also in part P. glandulosa and P. japonica. This Russian almond is very hardy, enduring the climate of the northern Prairie states, where it ripens its little almond-like frs. in July. A small-fruited form of the apricot (P. Armeniaca) has been intro. as Russian almond. Prunus nana is cult, in 2 or 3 forms. Var. campestris, Hort., has white fls. of larger size. Var. georgica, DC., has dark rose-colored somewhat smaller fls. and narrower, longer lvs. Var. cochin-chinensis, Hort., is a larger plant with white fls. Var. rubra, Hort., has red fls. over 1/2in. across. G.C. III. 52: suppl. Nov. 23 (1912). For another use of the name P. nana (for the choke cherry), see No. 72.
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