ROSACEA 



379 



scabrous above, pale below, and pilose above and below along the slender midribs 

 and obscure primary veins and veiulets, I'-l^' long, I'-l' wide; their petioles gland- 

 ular, winged above, at first villose, soon glabrous, usually about \' long. Flowers 

 1^' in diameter, on slender pedicels, in broad loose 8-11-flowered villose corymbs; 

 calyx-tube narrowly obconic, villose or nearly glabrous, the lobes narrow, acuminate, 

 entire, glabrous on the outer surface, usually puberulous on the inner surface; sta- 

 mens 10; anthers small, rose color; styles 2 or 3. Fruit ripening early in Novem- 

 ber, on slender pedicels, in drooping many-fruited glabrous clusters, globose or 

 short-oblong, bright orange-red, with a yellow cheek, about ^' in diameter; calyx 

 prominent, with large spreading lobes usually deciduous before the fruit ripens; 

 flesh thin, dry and mealy; nutlets 2 or 3, thick, prominently ridged on the back, 

 with broad rounded ridges, \' long. 



A tree, 15^-20 high, with a trunk o'-G' in diameter, wide-spreading usually hori- 

 zontal branches forming a low flat-topped or rounded head, and branchlets covered 

 with long pale hairs when they first appear, soon glabrous and bright red-brown, 

 becoming gray or gray tinged with red during their second year, and armed with 

 few thin straight or slightly curved spines ll'-2^' long. 



Distribution. Dry limestone slopes and ridges in central and southern Missouri; 

 common near Allenton and Pacific. 



-<-- Anthers yellow. 



13. Crataegus denaria, Beadl. 



Leaves oval, oblong-obovate or elliptic, acute or acuminate at the apex, gradually 

 narrowed from near the middle and cuneate and entire below, coarsely often doubly 

 serrate, with straight teeth, when they unfold tinged with red and slightly pilose 

 above and glabrous below, nearly fully grown when the flowers open toward the end 



of May, and at maturity firm to subcoriaceous, bright green and lustrous above, 

 pale below, 2i'-3' long, f'-lj' wide, with slender midribs and few remote thin pri- 

 mary veins, turning in the autumn orange, yellow, or brown; their petioles stout, 

 conspicuously glandular, winged above, and about \' long; on leading shoots broadly 

 oval to ovate or obovate, occasionally incisely lobed, 2^ '-3' long, and 1^-2' wide. 



