CRATAEGUS IN MISSOURI. 75 



full and rounded at the ends, dull crimson blotched with green, marked 



by large pale dots, 1.4-1.6 cm. in diameter; calyx little enlarged, with a 

 deep narrow cavity pointed and tomentose in the bottom, and slender 

 spreading and appressed lobes; flesh thin, yellow-green, dry and hard; 

 nutlets usually 2, gradually narrowed and rounded at the ends, often 

 rather broader at the apex than at the base, irregularly ridged on the back, 

 with a low narrow sometimes grooved ridge, 8-8.5 mm, long,and 4.5-5 mm. 



wide. 



A tree 7-8 m. high, with a tall stem sometimes 1.5 dm, 

 in diameter, covered with dark scaly bark, small spreading 

 branches forming an open irregular head, and slender nearly 

 straight branchlets dark reddish brown, marked by large pale 

 lenticels and covered with long scattered white hairs when 

 they first appear, light green and still villose at the end 

 of their first season, dull gray and glabrous the follow- 

 ing year, and armed with stout straight or slightly curved dull 

 gray spines 2.5-3 cm. in length, becoming compound, and 

 persistent on old trunks and stems. 



Wooded 



F. Kellogg (No. 1 type), May 

 1 Sept. 28, 1907. 



PUNCTATAE. 



Leaves obovate to oval or rhombic, cuneate at the base, usually more or 

 less lobed above the middle, thin to subcoriaceous, with prominent veins; 

 petioles short; flowers large, in hairy corymbs; fruit globose to sub- 

 globose or rarely obovate, 1.2-5 cm. in diameter. 



Anthers 



Leaves rhombic to obovate, acute or rounded at the apex; 

 flowers in mostly 9-12-flowered corymbs. 



Flowers 2-2.2 cm. in diameter, in densely villose 

 corymbs; fruit subglobose, flattened at the ends; 



mature leaves scabrate above. 



1. C. verruculosa. 



Flowers not more than 1.5 cm. in diameter, in slightly 

 villose corymbs; fruit globose to short-oblong, 

 rounded at the ends; mature leaves smooth above. 



2. C sordida. 



Leaves narrow-obovate, acuminate; flowers not more than 

 1.2 cm. in diameter, in slightly viUose 4-10-flowered 

 corymbs; fruit subglobose, often broader than high; 

 mature leaves smooth above, 3. C angustata. 



I 



