MALACEAE 547 



54. Crataegus flava Ait. A tree sometimes 8 m. tall, with spreading or ascend- 

 ing branches and scaly bark. Leaf-blades oval, ovate or obovate, 2-5.5 cm. long, 1.5-4 

 cm. wide, glabrous at maturity, pointed at the apex, narrowed or contracted, or on leading 

 shoots rounded and abruptly prolonged at the base into margined or winged glandular 

 petioles 5-15 mm. long, the borders crenate-serrate or dentate and shallowly incised : 

 corymbs simple or subsimple, 3-7 -flowered : pedicels 5-15 mm. long, pubescent, at least at 

 flowering time : hypanthium glabrous or nearly so : sepals 5-6 mm. long* glandular, 

 pubescent on the inner surface : corolla 15-18 mm. wide : stamens 10, the anthers pur- 

 plish : styles 3-5: fruit pyriform, 8-12 mm. thick, 12-16 mm. long, at maturity yellow 

 or yellow-green, the flesh firm : nutlets 3-5, 7.5-9 mm. long, the hypostyle 5-6 mm. long. 



Commonly cultivated in Europe and doubtless of east American origin. The description is based 

 on specimens from the Kew gardens. 



55. Crataegus Allegheni6nsis Beadle. A small tree or large shrub 2-5 m. tall, 

 with gray or brownish, scaly or rough bark and spreading or ascending branches. Leaf- 

 blades ovate, oval or nearly orbicular, 1-6 cm. long, 1.5-6 cm. broad, glabrous in age, 

 acute at the apex, abruptly narrowed or rounded, or on leading shoots truncate or subcor- 

 date at the base, the borders sharply serrate and incisely lobed ; petioles 5-20 mm. long, 

 margined, glandular : corymbs simple, 3-6-flowered : pedicels 1-2 cm. long, glabrous as is 

 the hypanthium : sepals 4-6 mm. long, glandular-serrate : stamens 10. the anthers purple : 

 fruit globular-pyriform, 9-14 mm. long, 8-12 mm. broad, at maturity red, the flesh soft : 

 nutlets 2-5, usually 3-4, 5-7 mm. long, about 3 mm. deep, the hypostyle 4-5 mm. long. 



In woods and on rocky exposures, Lookout Mountain, northeastern Alabama. 



56. Crataegus frugiferens Beadle. A shrub or small tree 1-5 m. tall, with dark 

 gray rough or scaly bark. Leaf -blades obovate, oval or round-ovate, 1-6 cm. long, 1.5-6 

 cm. wide, glabrous or glabrate in age, mostly acute at the apex, rounded or abruptly con- 

 tracted at the base into petioles 5-20 mm. long, the borders sharply and irregularly ser- 

 rate and incised : corymbs simple, 3-5-flowered : pedicels 7-15 mm. long, bearing a few 

 weak hairs : hypanthium glabrous : sepals about 4 mm. long, sparingly glandular-serrate 

 or entire : stamens 10, the anthers purple : fruit globose or subglobose, 9-13 mm. in diam- 

 eter, at maturity red, the flesh yellow or orange : nutlets 3-5, 7-8 mm. long, 4-5 mm. 

 deep, the hypostyle 5-6 mm. long. 



In sandy or rocky soil, northern and upper central Alabama. 



57. Crataegus aprica Beadle. A small tree or shrub 3-7 m. tall, with dark gray or 

 nearly black, rough or scaly bark. Leaf-blades obovate, rhombic-ovate or orbicular, 

 1.5-5 era. long, 1-5 cm. broad, glabrous at maturity, acute at the apex, usually narrowed 

 but sometimes rounded at the base, the borders dentate or crenate-dentate, more or less 

 toothed or lobed above the middle, or on leading shoots deeply lobed even to below the 

 middle ; petioles 7-20 mm. long, margined and, like the base of the blade, bearing numer- 

 ous black glands : corymbs 3-6-flowered, simple : pedicels 1-2 cm. long, pilose-pubescent : 

 hypanthium sparingly pilose, at least near the base : sepals 3-5 mm. long, glandular-ser- 

 rate or pectinately-glandular : stamens 10, the anthers yellow : fruit globose, 9-14 mm. in 

 diameter, at maturity red or orange-red, the flesh thick, orange-yellow : nutlets 3-5, about 

 7 mm. long, 3-4 mm. deep, the hypostyle about 5 mm. long. 



On sunny exposures in the mountains, western North Carolina and adjacent Tennessee to Georgia. 



58. Crataegus ignava Beadle. A small tree 3-4 m. tall, with gray or brownish 

 scaly bark, or more frequently a much-branched shrub with two or more stems. Leaf- 

 blades obovate, ovate or round-ovate, 2-5 cm. long, 1-3 cm. wide, glabrous or with a few 

 hairs along the midrib and principal veins, acute at the apex, wedge-shaped or more 

 abruptly contracted at the base, the margins sharply serrate and incised ; petioles 5-15 mm. 

 long, margined, glandular : corymbs simple, glandular-bract eate, 3-5-flowered : pedicels 

 glabrous or with a few weak hairs : hypanthium glabrous : sepals 4.5-5 mm. long, serrate 

 or glandular-serrate : stamens 20, the anthers purplish : fruit subglobose, 8-12 mm. in 

 diameter, at maturity red or orange-red, the flesh soft : nutlets 3-5, 6-7 mm. long, 3 mm. 

 deep, the hypostyle about 3 mm. long. 



In woods and on rocky bluffs, Lookout and Sand Mountains, Alabama and adjacent stations in 

 northwestern Georgia. 



59. Crataegus impar Beadle. A large shrub 2-4 m. tall, with many stems and 

 spreading or ascending branches clothed with dark gray or brownish, rough or scaly 

 bark. Leaf-blades obovate or oval, or on leading shoots broadly ovate, 2-5 cm. long, 1.5-4 

 cm. broad, glabrous when fully grown, acute at the apex, narrowed or contracted, or on 

 the shoots sometimes rounded at the base, the borders sharply serrate and incised ; petioles 

 7-20 mm. long, margined, remotely glandular : corymbs simple, 3-6-flowered : pedicels 

 and hypanthium glabrous or with several weak hairs : sepals 4-5 mm. long, serrate : corolla 

 15-18 mm. wide : stamens varying in number, usually 12-15, the anthers nearly yellow : 



