CRATAEGUS IN MISSOURI. 45 



and at maturity thin but firm in texture, light yellow-green and lustrous 

 on the upper surface, pale on the lower surface, 3-4 cm. long and 2-2.5 cm, 

 wide, with slender yellow midribs, and. thin primary veins mostly within 

 the parenchyma; petioles slender, narrow-wing-margined nearly to the 

 base, soon glabrous, 4-6 mm. in length; leaves on vigorous shoots broadly 

 obovate, usually rounded and short-pointed at the apex, or rhombic to 

 oval and acuminate, more coarsely serrate, and often 5-5.5 cm. long and 

 4-4.5 cm, wide, with foliaceous lunate coarsely serrate stipules. Flowers 

 1.5-1.7 cm. in diameter,. on long slender pedicels, in wide mostly 10-18- 

 flowered corymbs, the long slender lower peduncles from the axils of upper 

 leaves; calyx-tube narrowly obconic, the lobes wide, acumhiate and rose- 

 colored at the apex, minutely glandular-serrate, sparingly \dllose on the 

 inner surface, reflexed after anthesis; stamens 10-15, usually 10; anthers 

 pale rose color; styles 3-5, surrounded at the base by a ring of pale hairs. 

 Fruit ripening the middle of October, on slender drooping pedicels, in few- 

 fruited clusters, short-oblong to subglobose, full and rounded at the ends, 

 dull red more or less blotched with green, 8-10 mm. in diameter; calyx 

 little enlarged, with, a narrow shallow cavity, and small closely appressed 

 persistent lobes; flesh thin, yellow-green, dry and mealy; nutlets 3-5, 

 gradually narrowed and rounded at the ends, or w^hcn 5 acute at the ends, 

 ridged on the back, with a high broad deeply grooved ridge, 6.5-7 mm. 

 long, and about 4 mm. wide, 



A tree G-8 m. high, with a trunk 1.5-3 dm. in diameter, 

 horizontal branches forming a broad flat-topped head, and 

 stout slightly zigzag branchlets light orange-green and marked 

 by pale lenticcls when they first appear, becoming dark red- 

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

 and armed with numerous stout straight spines 4-5 cm. long. 



Near Grandin, Carter County, B. F, Bush (No. 3 type), 

 May G and Oct. 10, 1905, (No. 3 A) Oct. 11, 1905, also^ (Nos. 

 365, 393, 411, 412 and 413) May 1901. 



3. Crataegus infesta, n. sp. 



Glabrous with the exception of the hairs on the upper surface of the 

 young leaves and on the calyx-lobes. Leaves erect, oblong-obovate, 

 acute and short-pointed or rounded at the apex, and coarsely serrate 

 above the middle, with incurved glandular teeth; slightly hairy on the 

 upper surface when they unfold, very thin, hght yellow-green, lustrous and 

 glabrous above, with the exception of a few hairs on the midribs, and pale 

 below when the flowers open in the first week of May, and at maturity 

 • coriaceous, light yellow-green and very lustrous on the upper surface, 

 paler on the lower surface, 3-3.5 cm. long and 1.5-1.8 cm. wide, with 

 thin midribs rose-colored toward the base, and slender mostly prominent 

 primary veins; petioles stout, narrow- wing-margined nearly to the base, 



