ROSACEA. (rose family.) 



301 



Tribe VI. NEURADEiE. Calyx persistent, its tube growing after flowering, and 

 adherent to carpels. 



12. NEURADA, Stamens 10. Carpels 5 to 10, rerticillate ; fruit orbicular. Prostrate herb 



Tribe VII. POME-^. Trees or shrubs. Calyx-tube adherent to ovary. Stamens 

 numerous, inserted with petals at throat af calyx. Ovary 2-5-ce lied, cells 9-oo-ovuled, Fruit 

 fleshy, ' 



13. I'YRUS. Carpels 5. " Endocarp, cartilaginous; mesocarp studded with stony grains. An- 

 thers pinkish-violet. Fruit a Pear. 



14. MALUS. Carpels 5. Endocarp cartilaginous; mesocarp not granular. Anthers yellow. 

 Fruit an Apple, 



15. SORBUS. Carpels 2-4. Endocarp crustaceous; mesocarp fleshy. Trees with serrate or lob- 

 ed leaves. Fruit somewhat resembling a crab-apple, more like a rose-hip. 



16. MESPILUS. Carpels 5. Fruit drupe-like, containing 5, bony,l-seeded pyrenes. Small trees 

 with entire leaves. 



17. CRATAEGUS, Carpels 1-5. Fruit drupe-like, containing 1-2, rarely 5, bony, 1-seeded py- 

 renes. Small trees with lobed leaves. 



18. COTONEASTER. Carpels 1-5. Fruit drupe-like, containing 2-5, bony, 1-seeded pyrenes, 

 the base adherent to calyx, but the apex free. Shrubs with entire leaves. 



Fig. 156. 



(1) Longitudinal section of Rose, showing the akenes attached to the hollow-calyx, 

 the stamens implanted at throat of calyx, along with the petals, and enclosed in the 

 calyx-lobes. (2) Longitudinal section of a Quince, showing the fleshy calyx, enclosing 

 the adherent ovary with Us seeds, implanted on a central placenta. (3) One of the seeds. 

 (4) Its embryo. (5) Cross section of an Apple, showing the flesliy calyx adherent to the 

 fleshy ovary which is defined by the crenate lines near the middle, and encloses the seeds. 

 (6) Branch of a Pear in flower. (7) A flower-bud of the same. (8) An open flower. (9) 

 A leaf. 



1. AIWYODAL.US, L. Almond. Lauz. 



Drupe nearly 2-valved at maturity. Putamen smooth or wrinkled, 

 often pitted — Shi-ubs or trees, with conduplicate aestivation, nearly 

 sessile flowers, and peduncles thickened in fruit. 



* Unarmed shrubs, with erect, spartioid branches. Stamens 30-30. 



1, A. spartioidcs, Spach. 5 ^ ^<^ 1-^j branches angled. Leaves 

 linear-lanceolate, acute, crenulate, tapering to a petiole. Petals ob- 

 long-spathulate ; dmpe rather glabrescent, ovate-oblong, .015 long ; 



