464 . NATURAL HISTORY OF PLANTS. 



42. Crataegus T. — Flowers hermaphrodite ; receptacle finally 

 baccate, urceolate or campanulate. Sepals 5 {o^ Pi/rus), persistent or 

 caducous. Corolla and oo stamens of Pyrus. Ovary 1-5-celled 

 adnate to bottom of receptacle ; styles and ovules of Pi/rus. Drupe 

 ovate or globular ; stones 5, free or coherent into one, putamen 

 somewhat rarely (?) bony 2-5 -celled. Seeds erect compressed exal- 

 buminous. — Shrubs or small trees ; twigs often spinescent ; leaves 

 alternate simple lobed or pinnatifid ; stipules large or small, deci- 

 duous; flowers cymoso-corymbose bracteate terminal. [Cold and 

 temperate regions of Northern Hemisphere.) See p. 396. 



43. Cotoneaster Medik. — Flowers of Cratcsyus ; stamens 10- go. 

 Carpels 2-5, free inside and at apex, adnate by back (or rather very 

 oblique base) to inside of receptacle ; cells rarely 2>partite by a 

 spurious half-dissepiment {Najjelia) ; styles and ovules of Pyrus. 

 Drupe of variable form, 2-5-stoned; stones bony 1-seeded. Shrubs 

 or small trees, erect or decumbent ; leaves alternate petiolate usually 

 evergreen ; stipules subulate deciduous ; flowers solitary, or more 

 frequently in terminal or axillary, often unilateral cymes. {Northern 

 and Central Asia, Northern Africa, Europe, North America^ See p. 398. 



44. Eriobotrya Linul. — Flowers of Crataegus. Stamens not more 

 than 20 (of the Rosacea). Ovary inferior, or rarely free at apex, 2-5-, 

 more rarely 1 -celled ; styles free or more or less connate, at apex 

 dilated or truncate stigmatiferous. Ovules {o^ Pyrus) often obturated. 

 Drupe or berry 1-5-celled ; cells 1-2-seeded ; septa membranous or 

 chartaceous, sometimes obsolescent. Seeds of Cratagus. — Trees or 

 shrubs ; leaves evergreen simple petiolate coriaceous ; stipules small 

 or large, subfoliaceous ; flowers cymoso-racemose or corymbose ter- 

 minal. {Temjjerafe Asia, California.) See p. 399. 



45. Stranvsesia Lindl. — Flowers of Eriobotrya. Ovary 5-celled 

 half-superior ; styles 5, connate at base, at apex 2 -lobed stigmati- 

 ferous ; ovules of Pyrus. Drupe of variable form ; endocarp crus- 

 taceous 5-celled ; cells dehiscing loculicidally and dorsally. Valves 

 separating from each other, and from the axis, bearing median 

 dissepiments. Seed exalbumiiious ; embryo fleshy ; radicle inferior 

 exserted. — A brancjhing tree ; leaves alternate evergreen petiolate 



