Obder 47.— ROSACEA. 329 



1 or 2 glands. Fls. rose-color, with the odor of prussic acid. Fr. large, 1 to 2iJ' 

 diam., yellowish, tinged with purple, densely tomentous. — About 200 varieties 

 of this delicious fruit are named and described in the catalogues of American 

 nurserymen. The double-flowered peach is a highly ornamental variety, blos- 

 eoming in Apr. and May, but fruitless. 



B. L.EVIS. Nectarine. Drupe glabrous. — Closely resembles the peach in 

 form, foliage, and fls. The fr. is 1 to 3' diam., smooth, yellow, purple, red, 

 &c. Of its numerous (about 25) subvarieties about a fourth are clingstones — ■ 

 flesh adhering to the stone, and the remainder free-stones or clear-stones — 

 flesh free or separating from tho stone. \ 



8. AMYG'DALUS, Willd. Almond. Calyx 5-cleft, campanulate, 

 deciduous ; petals 5 : drupes.not fleshy, compressed : nucleus perforate 

 and furrowed, ovate, compressed, ouc edge acute, the other broad, ob- 

 tuse.— Trees or shrubs. Lvs. conduplicate in vernation. 



1 A. communis Willd. Lvs. lanceolate, serrate, with tho lower serratures, 

 glandular; fls. sessile, in pairs, appearing before tho lvs. — From Barbary. 

 Scarcely cultivated in this country for the fruit, which we receive mostly from S. 

 Europe. A double-flowered variety is highly ornamental in shrubberies, f 



2 A. nana Ait. Dwarf single-flowering Almond. Lvs. ovate, attenuate 

 at base, simply and finely serrate; fls. su' sessile, appearing before tho lvs. — A 

 very ornamental shrub from Russia. Height about 3f, branching. Lvs. 3 to 6' 

 long, \ as wide, smooth, acuminate at each end. Fls. numerous. Petals oblong; 

 obtuse, roseate, often double. May, Jn. f 



3 A. pumila Ait. Dwarf double-flowering Almond. Lvs. lanceolate, 

 doubly serrate; fls. pedicellate. — Native of China. A low shrub, highly orna- 

 mental, common in cultivation. Sis. 2 to 3f high, branching. Lvs. 3 to 5' by \ 

 to 1', acute at each end, smooth. Fls. very numerous, clothing the whole shrub 

 in their roseate hue, while the lvs. are 3-et small. May, Jn. f 



9. PHOTIN'IA, Lindl. (Gr. 0wr, <£arroc, light; on account of its 

 brilliant leaves.) Calyx 5-toothed ; petals reflexed; ovary villous, 2- 

 carpeled, half-superior styles glabrous ; fruit included in the fleshy 

 calyx; testa cartilaginous. — Elegant shrubs or trees, with coriaceous, 

 persistent lvs. Panicles terminal. 



1 P. arbutifolia Lindl. Lvs. oblong-lanceolate, acute, distinctly serrate; 

 pedicels shorter than the cal. — California. Height 10 to 20£ Lvs. dark, shining 

 green, very rigid, revolute at edge. Fls. small, numerous, white. 



2 P. serrulata LindL Lvs. oblong, acute, serrulate ; pedicels longer than 

 calyx. — China. Lvs. very smooth and shining. Fls. small, white. Both are 

 hardy at the South. 



iO. ERI0B0 TRYA, Lindl. Loquat. (Gr. tpiov, wool, Porpvg, a 

 cluster of grapes ; alluding to its villous flowers.) Calyx woolly, of 5 

 obtuse teeth ; petals bearded ; stamens erect, as long as the sepals ; 

 styles 5, filiform, included, hairy ; pome 3 to 5-celled, closed ; chalaza 

 none ; radicle retracted within the cotyledons. — Shrubs or trees, with 

 persistent lvs. 



E. Japonica Lindl. Lvs. lanceolate, wavy, and serrate; fls. in terminal, 

 woolly racemes, with very short pedicels ; fr. oval or roundish. — Cultivated and 

 hardy at tho South. Fls. small (3" diam.), white. Fr. about the size of the 

 gooseberry, bright yellow, and agreeable in taste, ripe early, f Japan. 



11. AMELAN'CHIER, Medic. Shad-Flower. Wild Service. (Fr. 

 Amelancier, the popular name of A. vulgaris.) Calyx 5-cleft, petals 

 5, oblong-obovate or oblanceolate ; stamens short ; styles 5, somewhat 

 united at base ; pome 3 to 5-cellcd, cells partially divided, 2-seeded. — 

 Small trees or shrubs. Lvs. simple, serrate. Fls. racemous, white. 

 A. Canadensis Torr. & Gr. Lvs. oval or oblong-ovate often cordate at bas^ 



