CRATAEGUS IN MISSOURI. 83 



straight or slightly curved dark gray spines 2.5-3 cm. 

 long. 



Swan, Taney County, B. F. Bush, (No. 8 type) April 20 

 and October 6, 1907, (No. 8 A) April 21, 1907. 



10. Crataegus Lettermani Sargent, Bot. Gazette, xxxi. 



220 (1901); Silva N. Am. xiii. 79, t. 657; Manual, 397, 

 f. 317. 



Near AUenton, St. Louis County. 



11. Crataegus secta, n. sp. 



Leaves oblong-obovate, acute or acuminate, gradually narrowed to the 

 concave-cuneate base, finely doubly serrate often to below the middle, with 

 straight glandular teeth, and deeply divided toward the apex into 4 or 5 

 pairs of narrow acuminate lobes; when they unfold coated with pale hairs 

 more abundant on the upper surface than on the lower surface, about one- 

 third grown when the flowers open the middle of April and then thin, yel- 

 low-green, roughened above by short white hairs and villose below, and at 

 maturity thin, scabrate and dull blue-green on the upper surface, pale 

 bluish green and villose on the lower surface especially on the slender 

 yellow midribs, and 4 or 5 pairs of thin prominent primary veins extending 

 very obliquely to the points of the lobes, 5-6 cm. long and 4-4.5 cm. wide; 

 petioles slender, narrowly wing-margined to the middle, covered while 

 young with long white only partly deciduous hairs, 1-1,2 cm, in length; 

 stipules lanceolate to linear-obovate, more or less falcate, glandular-serrate, 

 fading rose color, often persistent until the flowers open. Flowers 1.8-2 

 cm. in diameter, on long slender drooping villose pedicels, in compact 

 mostly 5-8-flowered hairy corymbs, the lower peduncles from the axils 

 of upper leaves; calyx-tube narrowly obconic, thickly coated with long 

 white hairs, the lobes slender, acuminate, coarsely glandular-serrate, 

 glabrous on the outer, villose on the inner surface, reflexed after anthesis; 

 stamens 5-8; anthers pale yellow; styles 3-5, surrounded at the base by a 

 narrow ring of pale hairs. Fruit ripening in September, on elongated 

 drooping hairy pedicels, in few-fruited clusters, subglobose, crimson, lus- 

 trous, marked by many small pale dots, 1-1.2 cm. in diameter; calyx little 

 enlarged, with a deep narrow cavity pointed in the bottom, and small 

 spreading and appressed lobes villose on the upper side; flesh thin, dry 

 and hard; nutlets 3-5, narrowed and rounded, or when 5 acute at the 

 ends, ridged on the back, with a broad high slightly grooved ridge, 5.5-6 

 mm, long, and about 5 mm. wide. 



A tree 4 or 5 m. high, with a short stem covered with dark 

 scaly bark, stout spreading branches armed hke the trunk 

 with numerous long dull gray spines, and slender nearly 

 straight branchlcts light red-brown and coated for 2 or 3 



