CRATAEGUS IN MISSOURI. . 73 



diameter; calyx little enlarged, with a broad shallow cavity, and small 



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

 and mealy; nutlets 2-4, full and rounded, or when 4, narrowed at the ends, 

 ridged on the back, with a broad high only sUghtly grooved ridge, 6.5-7 mm! 

 long, and 3.5-4 mm. wide. 



A tree 5-8 m. high, with a trunk 7-15 cm. in diameter, 

 large branches forming a broad round-topped head, and stout 

 nearly straight branchlets purple marked by large pale lenti- 

 cels and covered with matted white hairs when they first 

 appear, becoming dark red-brown, lustrous and glabrous in 

 their first season and dull gray-brown the following year, and 

 armed with numerous slender nearly straight purplish shining 

 spines 3.5-4.5 cm. long. 



Gravelly borders of small streams near Grandin. 



May 



Carter 



1905. 



May 



Well distinguished by 



corymbs and small sub 



munita 



Leaves oblong-obovate to oval, rounded or acute and sometimes short- 

 pomted at the apex, concave-cuneate at the entire base, and coarsely 

 crenately serrate above the middle ; nearly half-grown when the flowers open * 



m the first week of May and then thin, yellow-green, roughened above by- 

 short white hairs and villose on the upper side of the midribs and paler and 

 glabrous below, and at maturity thin but firm in texture, dark yeUow- 

 green, very lustrous and scabrate or almost smooth on the upper surface, 

 pale bluish green on the lower surface, 3-4 cm. long and 1-2.5 cm! 

 wide, with prominent midribs, and thin prominent primary veins ; petioles 

 slender, slightly wing-margined neariy to the base, densely villose while 

 young, becoming glabrous, often rose color in the autumn, 6-7 mm. long; 

 leaves on vigorous shoots oblong-obovate, acuminate, rather thicker' 

 coarsely doubly serrate, usually slightly lobed towards the apex, often 

 5-6 cm. long and 2.5-4.5 cm. wide, with stout rose-colored midribs, prom- 

 inent pnmary veins and broad-winged petioles. Flowers 1.2-1.5 cm. 

 in diameter, on slender densely viUose pedicels, in compact mostly 6-8- 



alyx 



•ymb 



long, slender, acuminate and glandular at the apex, glabrous on the outer 

 villose on the inner surface, reflexed after anthesis; stamens 10; anthers 

 rose color; styles 1 or 2, rarely 3. Fruit ripening late in October or early 

 in November, on short erect or spreading villose red pedicels, in few-fruited 



