ROSACE^E 455 



Distribution. Rich moist ground, Stratford, Connecticut (E. H. Eames)', Anso- 

 nia, Connecticut (E. B, Harger). 



IX. DILATAT-5J. 



Flowers in broad 6-12-flowered corymbs. 



Leaves broadly ovate ; fruit bright scarlet. 86. C. dilatata (A) 



Leaves nearly orbicular to oval ; fruit dull red, blotched with green or orange-red. 



87. C. suborbiculata (A). 



Leaves ovate to slightly obovate ; fruit crimson, pruinose. 88. C. Hudsonica (A). 



Flowers in very compact 5-7-flowered corymbs ; leaves broadly ovate ; fruit usually broader 

 than high, much flattened at the ends, dark crimson, very lustrous. 



89. C. coccinioides (A). 



86. Crataegus dilatata, Sarg. 



Leaves broadly ovate, acute, truncate, cordate, or slightly rounded at the broad 

 base, coarsely and generally doubly and irregularly serrate above, with straight teeth 

 tipped with large dark glands, unequally lobed, usually with 2 or 3 pairs of acute or 

 acuminate lateral lobes, about one third grown when the flowers open at the end of May, 

 and then light yellow-green, conspicuously plicate, roughened on the upper surface 

 with short stiff white hairs and glabrous on the lower surface, and at maturity smooth 

 and glabrous, dark green above, pale below, 2'-2^' long and almost as wide as long, 

 with slender midribs and 4 or 5 pairs of thin primary veins ; their petioles slender, 

 somewhat glandular, at first villose, soon glabrous, often dark red toward the base 

 after midsummer, l'-2' long; on vigorous shoots often 4'-o' long and frequently 



FV37 



rather broader than long, their stipules foliaceous, lunate, and often ' in length. 

 Flowers I'-l-j^' in diameter, on slender elongated hairy pedicels, in broad, loose, 

 usually 8-12-flowered slightly villose corymbs, with lanceolate bracts and bractlets 

 glandular like the inner bud-scales, with dark red glands; calyx-tube broadly obconic, 

 covered toward the base with matted pale hairs, nearly glabrous, the lobes broad, 

 acuminate, coarsely glandular, with large scattered red glands, glabrous on the outer 

 and generally slightly villose on the inner surface; stamens 20; anthers large, rose 

 color; styles usually 5, surrounded at the base by small tufts of white hairs. Fruit 



