. Selected western flora : Manitoba, Saskatchewan, Alberta . Botany; Botany; Botany. ROSACEiB 61 plants furnishing many of our most valuable fruits and flowers. Closely resembling the Saxifragaoeae in the flower, and the Legumi- nosiB in the leaf. * Ovary neither adhering to the calyx tude, nor surrounded by, noe enclosed in it. 1. Pninus, pistil solitary, beroming a drupe. 2. Spirea, pistils 5-8, forming several-seeded follicles. 3. Geum, pistils numerous, on a dry receptacle forming dry aohenes'with styles elongating at maturity. 4. Dryas, same as preceding, but shrubby. 5. Potentilla, pisti
. Selected western flora : Manitoba, Saskatchewan, Alberta . Botany; Botany; Botany. ROSACEiB 61 plants furnishing many of our most valuable fruits and flowers. Closely resembling the Saxifragaoeae in the flower, and the Legumi- nosiB in the leaf. * Ovary neither adhering to the calyx tude, nor surrounded by, noe enclosed in it. 1. Pninus, pistil solitary, beroming a drupe. 2. Spirea, pistils 5-8, forming several-seeded follicles. 3. Geum, pistils numerous, on a dry receptacle forming dry aohenes'with styles elongating at maturity. 4. Dryas, same as preceding, but shrubby. 5. Potentilla, pistils numerous on a dry receptacle forming aohenes, but the styles not elongating at maturity. 6. Fragaria, pistils numerous in pits on the surface of a fleshy receptacle. 7. Chamsrhodus, pistils S-20 on a dry receptacle. 8. Rubus, pistils numerous as drupelets on a fleshy receptacle. ** Ovary enclosed in the calyx tube, but not adhering to it. 9. Agrimonia, pistils 2, enclosed in a dry calyx tube armed with hooked prickles around the top. 10. Rosea, pistils, many, enclosed in an urn-shaped fleshy calyx tube. *** Ovary adhering to the calyx tube to form a fleshy fruit. 11. Pyrus, fruit a large fleshy pome. 12. Crattegus, fruit a small drupe-like pome with 1-5 bony kernels. 13. Amelanchier, fruit a small and berry-like pome with 10 hard seeds. 1. PRUNUS. Plum, Cherry. Calyx 5-cleft; petals 5, separate, spreading; stamens 15-20;. pistil solitary; fruit a fleshy drupe. Small trees or shrubs with white flowers and edible fruit. St- 1. P. i\igra. Ait. Wild Plum. A short or small tree armed with thorns; leaves thin, ovate, doubly crenate or serrate, usually glandular at the points of the teeth; fruit yellowish red, somewhat ob- long. Thickets, Man. west not far past meridian P. Virginians, Cherry. Choke Fio. 46.—Section of Flower of Prunus. St. stigma; s. style; sta. stamens; se. sepal; p. petal; o, ovary. A tall shrub with grayish brown bark; leaves oval, oblong, or obovate, bl
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1915
