CRATAEGUS IN MISSOURI. 65 



Rocky hills and barrens near Swan, Taney County, B. F, 

 Bush, (No. 7 type) May 21 and Sept. 23, 1905, (No. 7 A) 

 Sept. 24, 1905, (No. 7 B) May 22 and Sept. 23, 1905; Chad- 

 wlck, Christian County, B. F. Bush, (No. 1) May 14, 1907. 



27. Crataegus villiflora Sargent; Trees and ShrubS; ii. 



61, t. 128 (1908). 



Gravelly banks of streams, Grandin, Carter County, 5. jP. 

 Bush, (No. 11 type) May and October, 1905; limestone hills, 

 Pacific, Franklin County, /, H. Kellogg, (No. 3) May 8, 1905, 

 October 1. 1907. 



28. Crataegus permera, n. sp. 



Glabrous with the exception of the hairs on the young leaves and on the 

 calyx-lobes. Leaves oblong-obovate, usually rounded or acute and often 

 short-pointed at the apex, gradually narrowed and cuneate at the base, 

 and finely serrate above the middle, with straight or incurved glandular 

 teeth; more than half grown when the flowers open about the middle 

 of May and then thin, yellow-green and lustrous above and pale below, 

 and at maturity thin, dark yellow-grccn and lustrous on the upper surface 

 and pale yellow-green on the lower surface, 3.5-4.5 cm. long and 1.5-2 cm. 

 wide, with thin yellow midribs, and obscure primary veins mostly within 

 the parenchyma; petioles slender, narrowly wing-margined, 4-5 mm. in 

 length. Flowers 1.2-1.3 cm. in diameter, on slender pedicels, in crowded 

 compact mostly 8-10-flowered corymbs, the long slender lower peduncles 

 from the axils of upper leaves; calyx-tube narrowly obconic, the lobes long, 

 very slender, acuminate, entire or minutely dentate near the middle, 

 sparingly villose on the inner surface, reflexcd after anthesis; stamens 10; 

 anthers rose color; styles 2 or 3, surrounded at the base by a narrow ring 

 of white hairs. Fruit ripening the middle of October, on long drooping 

 reddish pedicels, in few-fruited clusters, short-oblong, full and rounded 

 at the ends, green more or less tinged with red, marked by large pale dots, 

 1-L2 cm. long and 8-9 mm. in diameter; calyx little enlarged, with a broad 

 shallow cavity, and small spreading and appressed lobes; flesh thin, green- 

 ish yellow, dry and mealy; nutlets 2 or 3, oblong, slightly narrowed and 

 rounded at the ends, or when 3 acute at the base, ridged on the back, with 

 a low slightly grooved ridge, 7-8 mm. long, and 4-4.5 mm. wide. 



A tree 5-7 m. high, with a trunk 8-12 cm, in diameter, hori- 

 zontal branches forming a wide flat-topped head, and slender 

 nearly straight branchlets dark orange-brown and marked 

 by large pale lenticels when they first appear, becoming 

 light chestnut-brown and lustrous in their first season and 



5 



