542 MALACEAE 



pointed at the apex, contracted at the base into winged petioles 1-2 cm. long, the borders 

 serrate or crenate-serrate and shallowly lobed or incised : corymbs compound, many-flow- 

 ered, pubescent : pedicels and liypanthium pubescent : sepals linear-lanceolate, glandular : 

 corolla 10-13 mm. wide : stamens normally 20, the anthers bright purple : fruit globose 

 or subglobose, 7-9 mm. wide, red when fully ripe, the flesh firm : nutlets 3-5, about 6 mm. 

 long, the hypostyle three-fourths as long as the ventral angle. 



In moist woods and on banks of streams, southeastern Tennessee and adjacent Georgia. 



24. Crataegus penita Beadle. A tree 4-6 m. tall, with brownish gray bark and a 

 wide-spreading crown, the twigs sparsely pubescent or eventually glabrous. Leaf-blades 

 broadly obovate, oval or ovate, 2.5-6 cm. long, 2-5 cm. wide, glal)rons or nearly .so, acute 

 at the apex, contracted or rounded at the base, the borders serrate and shallowly incised : 

 petioles 5-20 mm. long, slightly pubescent, at least when young : corymbs compound, 

 usually many-flowered, glabrous or glabrate : pedicels and liypanthium glabrous or bearing 

 a few weak hairs : sepals triangular-lanceolate, glandular-serrate or entire: corolla 15-18 

 mm. wide : stamens about 20, the anthers faintly pink or almost white : fruit globose or 

 depi'essed-globose, 8 10 mm. wide, at maturity red, with firm flesh: nutlets 3-5, about 6 

 mm. long, the hypostyle occupying two-thirds of the ventral angle. 



In low woods and on banks of streams, southeastern Tennessee. 



25. Crataegus Margar6tta Ashe. A small tree 4-5 m. tall, or moi-e freqently a large 

 shrub, with ascending or spreading branches. Leaf-blades obovate, broadly rhombic or 

 nearly orbicular, sometimes broader than long, 3-4 cm. long, 2.5-5 cm. wide, glabrous at 

 maturity, acute or bluntly terminated at the apex, narrowed or abruptly contracted at the 

 base, the borders serrate and shallowly incised, especially above the middle ; petioles 1-2.5 

 cm. long, slightly margined : corymbs glabrate, 5-12-flowered : pedicels and liypanthium 

 glabrous or with scattering, weak hairs : sepals triangular, entire or slightly serrate : corolla 

 14-17 mm. wide : stamens 15-20, about the lengtli of the styles : fruit globose, 8-10 mm. 

 in diameter, ruddy when ripe, the flesh firm : nutlets usually 2-3, about 5-6 ram. long, the 

 lateral or ventral faces nearly plane, the hypostyle 3-3.5 mm. long. 



In woods and on banks of streams, Missouri to Tennessee. 



26. Crataegus Boyntonii Beadle. A tree about 6 m. tall, with dark gray or brown- 

 ish smooth or sometimes scaly bark, or often er a large branching shrub 2-4 m. in height. 

 Leaf -blades broadly ovate or oval, 2.5-6 cm. long, 2-5 cm. wide, glabrous when fully 

 grown, acute at the apex, rounded or narrowed at the base and prolonged into margined, 

 glandular petioles 1-2.5 cm. long, or on leading shoots deltoid-ovate with truncate, sub- 

 cordate or even cordate bases, the borders serrate and incised : corymbs short, 4-10-flow- 

 ered : pedicels and liypanthium glabrous : sepals 4-6 mm. long, entire or serrate near the 

 tip, without glands below the middle: corolla 15-20 mm. wide: stamens 10, the anthers 

 yellow : fruit globose or depressed -globose, 10-15 ram. wide, at maturity yellow-green 

 flushed with red : nutlets 3-5, about 7 mm. long, 4-5 mm. measured dorso-ventrally, the 

 hypostyle about 4 ram. long. 



In woods and on banks of streams at elevations between 400 and 900 m. in the mountains of North 

 Carolina and Tennessee. 



27. Craetagus Buckleyi Beadle. A tree sometimes 8 ra. tall, with dark gray, brown 

 or nearly black fissured scaly bark, or more often a large much-branched shrub with one or 

 more stems. Leaf-blades 1.5-5 cm. long, 1-5 cm. wide, or even larger on vigorous shoots, 

 ovate or round ovate, acute at the apex, rounded or narrowed at the base into margined 

 and glandular petioles, serrate and incisely lobed, glabrous when fully grown : corymbs 

 3-7-flowered : pedicels and hypanthium glabrous : sepals 3-5 ram. long, glandular-serrate 

 and with stalked glands below the middle : corolla 15-20 mm. wide : stamens normally 10, 

 the anthers purplish : fruit subglobose, usually angled, at maturity red or russet-red, 8-12 

 ram. in diameter : nutlets 3-5, 7.5-9 mm. long, 4-5 mm. thick from back to inner angle, 

 the hypostyle about 3 mm. long. 



In woods and on banks in the mountains, Virginia to North Carolina and Tennessee. 



28. Crataegus communis Beadle. A shrub 1-2 ni. tall, frequently growing in 

 clumps or patches of considerable area. Leaf-blades ovate, oval or broadly oval, 2-5.5 cm. 

 long, 1.5-4 cm. wide, acutely or bluntly pointed at the apex, rounded or contracted at the 

 base into margined petioles 5-20 mm. long, glabrous when fully grown, the borders serrate 

 and incised : corymbs simple, 2-5-flowered : pedicels and liypanthium glabrous : sepals 

 triangular-lanceolate, serrate and glandular: corolla 15-20 mm. wide: stamens 10, the 

 anthers pale purple or nearly white : fruit globose or subglobose, 9-13 ram. in diameter, 

 red when ripe, the flesh firm : nutlets 3-5, 6-7 mm. long, the hypostyle about 3 mm. long. 



On the limestone formation in the Cumberland Mountains, Tennessee. 



29. Crataegus straminea Beadle. A shrub 1-3 m. tall, frequently growing in large 

 patches. Leaf-blades oval, ovate or round-ovate, 2-6 cm. long, 1.5-6 cm. broad, acute at 



