484 



ROSACEA. 



a drape (figs. 339, p. 213; 405, p. 235; 406-7, p. 236). 3. Spi- 

 reeese (fig. 102, p. 41), calyx-tube herbaceous, lined with a disk, fruit 

 consisting of numerous follicles, seeds apterous. 4. QuiUaiese, flowers 

 unisexual, calyx-tube herbaceous, fruit capsular, seeds ■winged at the 

 apex. 5. Sanguisorbese, or Poteriese, petals 0, tube of calyx thick- 

 ened and indurated, lined with a disk, stamens definite ; nut solitary, 

 enclosed in the calycine tube. 6. Potentillese (including Rubeae) (fig. 

 300, p. 1 98), calyx-tube herbaceous, lined with a disk which some- 



Pig. 706, 



rig. 711. 



Fig. 712. 



times becomes fleshy, fruit consisting of numerous achaenia. 7. Rosese, 

 calyx-tube contracted at the mouth, becoming fleshy, lined with a disk, 

 and covering numerous hairy achsenia (flgs. 294, p. 196 ; 313, p. 204). 

 8. Neuradese, calyx-lobes, with or without bracts, petals 5, carpels 5 

 or 10, uniovulate, frait 5-10 valved. 9. Pomeae (Pomacese of Lind- 

 ley), tube of calyx more or less globose, lined with a fleshy and juicy 



Figs. 705-712. Organs of fnictiiicatioii of Rubus strigosus, illustrating the natural order 

 Rosaceae. Fig. 705. Diagram of the flower, witli five divisions of the calyx, 5 quincun- 

 cial petals, indefinite perigynons stamens, and numerous succulent carpels. Fig. 706. 

 The flower cut vertically, c c. Calyx, pe, Petals, e, Stamens, d. Disk, lining the base of 

 the calyx, upon which the stamens are inserted, pi, Pistil, composed of several carpels. 

 Fig. 707. Bilocular anther separated, with the upper part of the filament seen on the out- 

 side. Fig. 708. Ovary, o, cut vertically, g, Exalhuminous, suspended seed, s. Lateral 

 style. Pig. 709. Fruit. /, Fleshy carpels accompanied with the persistent calyx, c, con- 

 nected with which the withered filaments are seen. Fig. 710. Vertical section of a carpel, 

 s, Lateral style, m. Fleshy mesocarp or sarcocai'p. e, Endocarp. g, Seed. Fig. 711. 

 Horizontal section of the exalhuminous seed, t, Integument (spermoderm). c. Cotyledons 

 of the emhryo. Fig, 712. Embryo isolated. It fills the entire seed. 



