Crataegus Rosaceae 539 



This species may have originated as a hybrid between Crataegus viridis 

 and Crataegus crus-galli or some species of the Crus-galli group, as is sug- 

 gested by the intermediate character of the bark, foliage, and fruit, and 

 by the fact that it is found only within the range of these species. 



In Indiana it is known only from Jackson, Lawrence, and Posey Coun- 

 ties, growing in low, alluvial woods along the larger streams. 



Southwestern Ind., s. 111., and e. Mo. 



5. Crataegus punctata Jacq. (Deam. Trees of Indiana, ed. 2, pi. 80. 

 1932.) Dotted Haw. Map 1105. Leaves spatulate or lance-obovate, 2.5-7 

 cm long, 1.5-3.5 cm wide, rounded, acute, or acuminate at the apex, at- 

 tenuate at the base into winged petioles (1.5-2 cm long) , sharply serrate or 

 dentate on the upper two thirds of the blades, often incised and with shal- 

 low lobes above the middle, or on vigorous shoots deeply laciniate, firm in 

 texture, with veins deeply impressed on the upper side, dull grayish green, 

 scabrate above when young and pubescent along the veins beneath ; flowers 

 16-20 mm in diameter, usually in many-flowered, compound, villous 

 corymbs ; stamens about 20 ; anthers red or rarely pale yellow ; calyx lobes 

 narrowly deltoid, usually entire ; fruit subglobose or short-oblong and flat- 

 tened at the ends, 14-20 mm in diameter, dull red with pale dots, becoming 

 mellow; nutlets 3-4. 



A tree up to 10 m high, with gray, furrowed or slightly scaly bark, and 

 often with compound thorns on the trunk or principal branches. The 

 branches are at first ascending but, in old trees, becoming horizontal or 

 depressed ; the branchlets villous the first season, olive brown and glabrous 

 the second season, and finally gray, unarmed or armed with long, slender 

 thorns. 



Throughout Indiana, in thickets, pastures, and borders of woods. 



Newf. and e. Canada to Minn., southw. to N. C. and 111. 



5a. Crataegus punctata var. aiirea Ait. This variety differing only in 

 the bright yellow fruit, has been found in Jennings and Wells Counties, 

 and should be sought in other sections. 



5b. Crataegus punctata var. canescens Britt. This variety differs in 

 the close, copious, gray pubescence of the leaves and young branchlets. 

 It is -occasionally found throughout the range of the species, and is known 

 from Allen, Grant, Hamilton, Howard, Marshall, Vermillion, and Wayne 

 Counties. 



6. Crataegus collina Chapm. (Deam. Trees of Indiana, ed. 2, pi. 82. 

 1932.) (Crataegus macropoda Sarg. and Crataegus sucida Sarg.) Map 

 1106. Leaves narrowly obovate or oblong-obovate, 2-6 cm long, 1.5-3 cm 

 wide, rounded or pointed at the apex, attenuate at the base, serrate on the 

 upper two thirds of the blades, or sometimes nearly to the base, thin but 

 firm, with veins slightly impressed above, dull green, scabrous above and 

 villous beneath when young, at maturity glabrous above and slightly villous 

 on the veins beneath ; flowers 14-17 mm in diameter, in compound, many- 

 flowered, villous corymbs; stamens 15-20; anthers pale yellow or rarely 



