Crataegus Rosaceae 551 



23. Crataegus Kelloggii Sarg. (Sargent. Manual of Trees of North 

 America, ed. 2: 475. fig. 432. 1922.) Map 1123. Leaves ovate, rhombic- 

 ovate or suborbicular, mostly 2.5-6 cm long, 2-5 cm wide, rounded or 

 abruptly pointed at the apex, abruptly narrowed, rounded or truncate at 

 the base, sharply serrate nearly to the base, usually with 3 or 4 pairs of 

 shallow, obscure or rounded lateral lobes, firm to subcoriaceous at ma- 

 turity, scabrate above and more or less villous on the veins beneath while 

 young, becoming glabrate or remaining slightly villous beneath; petioles 

 slender, a third to half the length of the blades, somewhat villous or 

 tomentose; flowers 14-17 mm in diameter, in compact, compound, villous 

 or thinly tomentose, mostly 5-10-flowered corymbs; stamens about 20; 

 anthers white or tinged with pink ; fruit subglobose or short-ovoid, 14-20 

 mm in diameter, bright yellow (according to description) or red, punctate, 

 with a slight bloom ; nutlets usually 5. 



A tree up to 6-7 m high, with dark, rough, deeply furrowed bark, and 

 ascending or wide-spreading branches, forming a low, conical crown; 

 branchlets slender, unarmed or sparingly armed with stoutish or slender 

 purple thorns. 



Known in Indiana only from Wells County where a tree was found in 

 a clearing on the land of the Erie Stone Company about 2 miles north- 

 west of Bluffton. 



Ind. to Mo. 



Crataegus Kelloggii is probably a hybrid between Crataegus Margaretta 

 and Crataegus mollis, and may be looked for where those two species are 

 found together. There is much variation in the characters of the fruit, 

 foliage, and flowers, as is to be expected in hybrids. The fruit of the type 

 tree was described as bright yellow, an unusual color in the genus and 

 probably exceptional in this species, although it is interesting to note that 

 a yellow-fruited form of both parent species has been found. 



Crataegus mollis appears to hybridize with other species. It has been 

 suggested that Crataegus platycarpa may be a hybrid between this and 

 some species of the Pruinosae group (possibly Crataegus rugosa) , and 

 forms have been found in Lawrence County that appear to be hybrids 

 between Crataegus ?nollis and Crataegus pruinosa, and possibly also be- 

 tween Crataegus mollis and Crataegus punctata. 



24. Crataegus Phaenopyrum (L. f.) Medic. (Deam. Trees of Indiana, 

 ed. 2. pi. 99. 1932.) (Crataegus cordata Ait.) Washington Thorn. Map 

 1124. Leaves ovate to deltoid in outline, sometimes appearing 3-lobed, 

 mostly 2-6 cm long, 2-5 cm wide, acute or acuminate at the apex, rounded, 

 truncate or cordate at the base, serrate with broad, shallow teeth, usually 

 with 1-3 pairs of lateral lobes, the lowest pair often enlarged and with 

 spreading, acuminate points, firm at maturity, glabrous, glossy on the 

 upper surface; petioles very slender, a third to two thirds the length of 

 the blades; flowers small, 10-12 mm in diameter, in glabrous, compound, 

 mostly 10-30-flowered corymbs; stamens about 20; anthers pale yellow; 

 fruit subglobose, 5-7 mm in diameter, long persistent, in many-fruited 

 clusters, bright scarlet, becoming succulent at maturity; calyx relatively 



