566 MALACEAE 



or less pilose, compound, many-flowered : pedicels 8 mm. -2. 5 cm. long, pilose or glabrous : 

 hypanthium usually glabrous : sepals 2-5 mm. long, entire or slightly glandular-serrate : 

 corolla about 15 mm. wide: stamens 20, the anthers light yellow : fruit globose, 7-9 mm. 

 in diameter, at maturity red or greenish red, frequently with black spots and blotches : 

 nutlets 3-5, 5-7 mm. long, the hypostyle occupying about two-thirds of the ventral angle. 

 In woods and fields, northwestern Georgia to Alabama, Mississippi and Tennessee. 



168. Crataegus edura Beadle. A tree sometimes 7-8 m. tall, with a trunk 2 dm. in 

 diameter covered with ashy gray or brownish scaly bark. Leaf-blades cuneate or ob- 

 long- or obovate-cuneiform, 2.5-6 cm. long, 1-3 cm. wide, at maturity glabrate or slightly 

 scabrous on the upper surface, usually with some pubescence along the midrib beneath, 

 mostly rounded or obtuse, but occasionally acute at the apex, cuneate at the base, the bor- 

 ders serrate or crenate-serrate above the middle ; petioles 2-10 mm. long, pubescent, at 

 least when young : corymbs small, congested, compound, 5-12-flowered : pedicels sparingly 

 pilose : hypanthium glabrous or with a few hairs at the base : sepals 3-4.5 mm. long, en- 

 tire or slightly serrate : corolla 10-14 mm. wide : stamens 16-20, the anthers light yellow 

 or almost white : fruit subglobose, 8-9 mm. thick, at maturity orange-yellow with red or 

 ruddy cheeks : nutlets mostly 2-3, 6-7 mm. long, the hypostyle about two-thirds the length 

 of the nutlet. 



In upland woods, southern Louisiana. 



169. Crataegus tersa Beadle. A tree 4-6 m. tall, with dark gray or brownish scaly 

 bark. Leaf -blades oblong- or obovate-cuneiform, 2-6 cm. long, 1-4.5 cm. wide, at ma- 

 turity lustrous and glabrous or slightly scabrous on the upper surface, more or less pubescent 

 beneath, rounded or obtuse, or on leading shoots slightly pointed at the apex, wedge-shaped 

 or more abruptly contracted at the base, the borders serrate or crenate-serrate above the 

 middle ; petioles 5-15 mm. long, margined, pubescent, at least when young : corymbs com- 

 pound, many -flowered, pilose-pubescent : pedicels and hypanthium pilose-pubescent : 

 corolla 15-18 mm. wide : stamens 18-20, the anthers purplish : fruit subglobose, 8-9 mm. 

 thick, ruddy at maturity : nutlets mostly 2-3, about 6 mm. long, the hypostyle about 4 mm. 

 long. 



In upland woods, southern Louisiana. 



170. Crataegus tetrica Beadle. A large shrub, or a small tree 4-7 m. tall, with a 

 short trunk 1-2 dm. in diameter covered with dark brown scaly bark. Leaf-blades oval 

 or obovate, 2.5-6 cm. long, 1.5-4.5 cm. wide, bright green and glabrous or glabrate on the 

 upper surface, pale and pubescent beneath, especially along the midrib and principal 

 veins, rounded or on vigorous shoots pointed at the apex, abruptly contracted or narrowed 

 at the base, the borders serrate above the middle or sometimes nearly to the base ; petioles 

 5 mm.-l cm. long, margined, pubescent : corymbs compound, hirsute or pilose-pubescent, 

 10-20-flowered : pedicels and hypanthium pilose-pubescent : sepals about 4 mm. long, 

 entire or nearly so : stamens normally 10, the anthers purplish : fruit globose, about 1 cm. 

 in diameter, red or yellow-green with red cheeks : nutlets mostly in pairs, 6-8 mm. long, 

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



On limestone hills, middle Tennessee. 



171. Crataegus arta Beadle. A large shrub, or a small tree 3-4 m. tall, the trunk 

 or main stems clothed with dark gray or brownish scaly bark. Leaf-blades cuneate, obo 

 yate- or oblong-cuneiform, rarely elliptic, 2-4 cm. long, 1-2 cm. wide, or larger on lead- 

 ing shoots, glabrous or with a few hairs along the midrib, especially on the upper surface, 

 rounded or pointed at the apex, wedge-shaped or more abruptly contracted at the base, the 

 borders serrate above the middle ; petioles 2-10 mm. long, sparingly pubescent when 

 young, mainly on the upper surface and margins : corymbs narrow, close, 4-8-flowered : 

 pedicels 4-10 mm. long, more or less pubescent : hypanthium glabrous or with a few hairs 

 near the base : corolla 15 mm. wide : stamens normally 10, the anthers purplish : fruit 

 subglobose or short ovoid, about 1 cm. thick, at maturity yellow-green or orange with red 

 cheeks : nutlets mostly 2-3, 7-8 mm. long, the hypostyle 4-5 mm. long. 



On limestone hills, middle Tennessee. 



172. Crataegus tdrva Beadle. A large shrub, or a small tree 3-4 m. tall, with dark 

 gray or brownish scaly bark. Leaf-blades obovate, elliptic or cuneiform, or on leading 

 shoots sometimes oval, 2-5 cm. long, 1-3 cm. wide, or larger on the shoots, glabrous or 

 glabrate at maturity, either pointed or rounded at the apex, wedge-shaped or more abruptly 

 contracted at the base, the borders serrate above the middle : corymbs compound, many- 

 flowered, more or less pilose-pubescent : pedicels and hypanthium pilose or glabrate : 

 sepals 3-4 mm. long, entire or sparingly serrate : corolla about 15 mm. wide : stamens 

 7-10, the anthers purplish : fruit subglobose, 7-9 mm. in diameter : nutlets mostly 2-3, 

 6-7 mm. long, the hypostyle about two-thirds as long as the ventral angle. 



In woods and on hills, Georgia and Alabama. 



