552 ROSACEAE Crataegus 



large, often entirely deciduous leaving the tops of the nutlets exposed ; 

 nutlets usually 5. 



A tree up to 10 m high, with brown gray, scaly bark, numerous ascend- 

 ing or spreading branches, forming a low, conical crown, and slender 

 branchlets usually abundantly armed with slender thorns. 



Known in Indiana only from Wayne County, where it has possibly 

 escaped, but it should be sought as a native plant in the southern counties. 

 This species is highly ornamental and desirable for planting on account of 

 its abundant flowers and the brilliant color of the fruit which is produced 

 in large, pendulous clusters, remaining on the tree until late in the season. 



Va. and N. C. to Mo. 



25. Crataegus Calpodendron (Ehrh.) Medic. (Deam. Trees of Indi- 

 ana, ed. 2. pi. 85. 1932.) (Crataegus tomentosa of authors but perhaps not 

 of L. and Crataegus structilis Ashe.) Pear Haw, Sugar Haw. Map 1125. 

 Leaves ovate, oblong-ovate or elliptic in outline, mostly 4-8 cm long, and 

 3-5 cm wide, pointed or short-acuminate at the apex, acute or abruptly 

 contracted at the base and attenuate into winged petioles, sharply serrate 

 on the upper three fourths of the blades, usually with 3-5 pairs of obscure 

 or shallow triangular lobes, mostly above the middle, firm to subcoriaceous 

 and with veins impressed above at maturity, scabrate above when young, 

 and permanently pubescent at least on the veins beneath; petioles usually 

 1-2 cm long; flowers 12-15 mm in diameter, in loose, compound, tomentose, 

 mostly 10-20-flowered corymbs; stamens about 20; anthers pink; fruit 

 oblong, ovoid or nearly globose, 7-10 mm in diameter, pubescent, scarlet 

 or orange red, flesh thin, becoming mellow ; calyx relatively large, elevated ; 

 calyx lobes lanceolate, glandular-serrate, reflexed or often deciduous; 

 nutlets 2-3, deeply pitted on the ventral surfaces. 



A small tree up to 6 m high, or often an arborescent shrub, with dark, 

 slightly scaly bark and erect or ascending branches, forming a narrow 

 pyramidal crown; branchlets usually villous when young, soon glabrate, 

 olive brown, becoming gray, nearly unarmed or sparingly armed with 

 long, slender thorns. 



Frequent and generally distributed in Indiana, growing in thickets 

 or open woods, usually along streams or lakes. 



Southern Ont. to Minn., southw. to N. C. and Ark. 



26. Crataegus succulenta Schrader. (Deam. Trees of Indiana, ed. 2. 

 pis. 83 and 84. 1932.) (Crataegus ensifera Sarg., Crataegus neofluvialis 

 Ashe, and Crataegus vegeta Sarg.) Map 1126. Leaves oblong-ovate, 

 elliptic or rhombic, mostly 5-8 cm long, and 2.5-6 cm wide, acute or short- 

 acuminate at the apex, gradually or abruptly narrowed at the base and 

 attenuate into short (1-2 cm), winged petioles, finely serrate except toward 

 the base, usually with 2-5 pairs of shallow or obscure lateral lobes, 

 coriaceous or subcoriaceous and with veins conspicuously impressed above 

 at maturity, dark green and scabrate above when young, much paler and 

 permanently pubescent beneath; flowers 12-15 mm in diameter, usually 

 15-30, in compound, villous, corymbs; stamens usually about 20; anthers 



