302 



THE FLORA. 



Fig. 452. Flowers of the Great Red Cherry : 6, section, 

 showing the perigynous stamens, the single ovary, Ac. 

 Fig. 458. Section of the cherry, showing the seed lying 

 In tho stone and pnlp. Fig. 454. Section of the flower of 

 Lady's-mantle (Class Book, p. 825), with the simple 

 ovary, lateral style, Ac, Fig. 455. A flower of Strawlierr 

 showing the perigynous stamens, the many simple pistils < 



Fig. 456. A section of the 

 the large torus. Fly. 457. Soctior 



of a Eose, showing the many simple pistils sunk in the hollow torus, Ac. 



Analysis of the Genera. 



Flowers with 1 pistil and no petals. Herbs. . . .a 



Flowers with 1 pistil and 5 petals. Shrubs or trees 2 



Flowers with 2 co pistils 3 



2 Style lateral, i. ., arising from the side of the ovary . . . . o 

 2 Style terminal, i. ., arising from the top of the ovary c 



8 Pistils (carpels) 2-5, all consolidated with the calyx. Fruit a pome d 



8 Pietila (carpels) 2-50, free, in an open or closed calyx 4 



4 Carpels 1-seeded, achenia inclosed in the calyx tube e 



4 Carpels 1-seeded, achenia dry or pulpy in an open calyx 5 



4 Carpels several-seeded, pods in an open calyx k 



5 Styles persistent on the dry achenia. . . .f 



5 Styles falling off with the rest of the flower 6 



6 Calyx entirely bractless. Flowers never yellow. . . .g 

 6 Calyx with bractlets beneath it as if double h 



a Stamens 1-4. Style lateral. Fls. scattered. Lady's-mantle. ALCHEMIL'LA. 



s Stamens 4. Style terminal. Fls. in dense spikes. Bwnet. SANGUISOR'BA. 



a Stamens oo. Style terminal. Flowers in spikes. Burnet. POTE'RIUM. 



b Stamens about 20. Drupe 1-seeded. S. Cocoa Plitm. CHKYSOBALA'MJS. 



o Stone globular, smooth. Fruit not glaucous. Cherry. CKR'ASUS. 1 



Stone flattened, smooth. Fruit glaucous or downy. Plum. PBr'xus. 



Stone roughened with pits and furrows. Fruit pulpy. Peach. PER'SICA. 



C Stone roughened with pits and furrows. Fruit dry. Almond. AMYG'DALCS. 

 d Petals spat.-oblong. Pome with 5 dble.- cells. Shad-bush. AMELAN'CHIER. 2 

 d Petals roundish. Pome with bony, 1-seeded cells. Thorn. CRAT^'OCS. 

 d Petals roundish. Pome with thin, 2-seeded cells. Apple. PTRUS. J 



d Petals roundish. Pome with 5, many- seeded cells. Quince. CTDO'KIA. 4 



