562 MALACEAE 



hypanthiura tomentose : sepals 5-7 mm. long, serrate, glandular, tomentose : corolla 2-2.5 

 cm. wide : stamens 20, the anthers pale yellow : fruit subglobose, 13-18 mm. thick, eventu- 

 ally bright red, ripening in August and early September : nutlets 3-5, 7-8 mm. long, the 

 hypostyle about 5 mm. long. 



Mostly in rich soil, Michigan to middle Tennessee and Missouri. 



143. Crataegus Arkansana Sarg. A tree 5-7 m. tall, with gray scaly bark. Leaf- 

 blades oval or oblong-ovate, 4-10 cm. long, 2.5-8 cm. wide, at maturity glabrous on the 

 upper surface, glabrate beneath or with some pubescence along the midrib and in the axils 

 of the veins, acute at the apex, broadly cuneate or rounded at the base, sharply serrate 

 and usually incised above the middle into 6-8 short acute lobes ; petioles 1.5-4 cm. long, 

 winged above, ultimately glabrous or glabrate : corymbs compound, many-flowered, vil- 

 lous : pedicels and hypanthium villous-tomentose : sepals 4-5 mm. long, incised, glandu- 

 lar : corolla 2-2.5 cm. wide : stamens 20, the anthers pale yellow : fruit oblong or obovoid, 

 13-18 mm. thick; at maturity bright crimson, the flesh thick and dry : nutlets 3-5, about 

 7 mm. long, the hypostyle about 5 mm long. 



Mostly in rich soil, southern Arkansas. 



144. Crataegus Texana Buckl. A tree, sometimes 10 m. tall, with a trunk 3 dm. 

 in diameter clothed with scaly bark. Leaf-blades broadly ovate, 5-10 cm. long, 3-7.5 cm. 

 wide, at maturity lustrous on the upper surface, pubescent or tomentose beneath, especially 

 along the midrib and principal veins, acute or sometimes rounded at the apex, cuneate or 

 on leading shoots truncate at the base, the borders coarsely serrate and usually incisely 

 8-10-lobed ; petioles 1-3 cm. long, winged above, tomentose or glabrate : corymbs com- 

 pound, many-flowered, tomentose : pedicels and hypanthium tomentose : sepals 5-8 mm. 

 long, incised, glandular, villous-tomentose : corolla about 2 cm. wide : stamens 20, the 

 anthers dark red : fruit short oblong or obovate, 12-18 mm. thick, at maturity bright 

 scarlet, the flesh thick, soft : nutlets usually 5, 7-9 inm. long, slightly grooved^ on the 

 back. 



In rich bottom lands, central and western Texas. 



145. Crataegus gravida Beadle. A wide-spreading tree, sometimes 6-7 m. tall, 

 with a trunk 2 dm. in diameter covered with dark brown scaly bark. Leaf -blades broadly 

 ovate, 4-9 cm. long, 3-8 cm. wide, at maturity lustrous on the upper surface, pubescent 

 beneath, mostly acute at the apex, rounded, truncate or cordate at the base, the borders 

 serrate and shallowly incised ; petioles 1.5-3 cm. long, pubescent : corymbs compact, sub- 

 simple or compound, hirsute-tomentose, many-flowered : pedicels and hypanthium hirsute- 

 tomentose : sepals 3-5 mm. long, glandular-serrate : corolla about 15 mm. wide : stamens 

 about 20 : fruit depressed -globose, 12-15 mm. in diameter, red at maturity : nutlets mostly 

 5, about 8 mm. long, the hypostyle 4-5 mm. long. 



On hills, near Nashville, Tennessee. 



146. Crataegus cibaria Beadle. A shrub or small tree 3-6 m. tall, with dark gray 

 scaly bark. Leaf-blades ovate, broadly ovate or oval, 3-9 cm. long, 2-7 cm. wide, at ma- 

 turity glabrous above, pubescent along the midrib and principal veins beneath, acute or 

 acuminate at the apex, rounded or contracted at the base, the margins sharply serrate and 

 incised ; petioles 1-4 cm. long, pubescent : corymbs ample, many-flowered, pubescent : 

 pedicels pubescent : hypanthium glabrous : sepals 5-6 mm. long, incised, glandular : 

 corolla 2 cm. broad or more : stamens 20, the anthers light yellow : fruit short-oblong or 

 obovate, 10-14 mm. wide, 12-15 mm. long, at maturity red, the flesh soft and edible : nut- 

 lets 3-5, about 8 mm. long, the hypostyle about 5 mm. long. 



On hills, near Nashville, Tennessee. 



147. Crataegus lacera Sarg. A tree 6-8 m. tall, with a trunk sometimes 1 dm. in 

 diameter, clothed with gray or brownish scaly bark. Leaf-blades ovate or rhombic, or on 

 leading shoots broadly ovate, 2.5-9 cm. long, 2-8 cm. wide, glabrous at maturity, acute at 

 the apex, broadly cuneate or on leading shoots subtruncate at the base, the margins 

 coarsely serrate and incised ; petioles 1-4 cm. long, margined, ultimately nearly glabrous : 

 corymbs compound, sparingly villous, many-flowered : pedicels sparingly villous : hy- 

 panthium glabrous: sepals linear-lanceolate,* 4-5 mm. long, serrate, glandular: corolla 

 15 mm. wide : stamens 20, anthers rose-color : fruit oblong, 7-10 mm. thick, 10-13 mm. 

 long, at maturity bright red : nutlets 3-5, about 8 mm. long, the hypostyle 5-6 mm. long. 



In low woods, near Fulton, Arkansas. 



148. Crataegus Biltmoreana Beadle. A shrub 1-5 m. tall, with gray or reddish 

 brown scaly bark. Leaf-blades ovate or round-ovate, 2-7 cm. long, 2-6 cm. wide, pubes- 

 cent on both surfaces, acute at the apex, contracted, rounded, or on leading shoots truncate 

 at the base, the margins serrate and incised ; petioles 1-3 cm. long, margined, glandular : 

 corymbs simple, pubescent, 3-7-flowered : pedicels and hypanthium pubescent : sepals 



