3 '4 



MALACEAE. 



Vol. II. 



51. Crataegus beata Sargent. Dunbar's Thorn. Fig. 2385. 



C. beata Sarg. Proc. Roch. Acad. Sci. 4: 97. 1903. 

 C. compta Sarg. Proc. Roch. Acad. Sci. 4: 102. 1903. 

 C. medioxiina Sarg. Proc. Acad. Nat. Sci. Phil. 62; 190. 



191 o. 

 C. effera Sarg. Proc. Acad. Nat. Sci. Phil. 62 : 206. 1910. 



A slirub sometimes 20° high, with ascending or 

 erect branches, the thorns I'-iJ' long. Leaves ovate, 

 ii'-3' long, i'-2i' wide, acute or acuminate at the 

 apex, broadly cuneate to truncate at the base, doubly 

 serrate with acute lobes, blue-green above, paler 

 beneath, membranous to subcoriaceous, dull, those of 

 shoots sometimes cordate; corymbs many-flowered, 

 glabrous; flowers y"-lo" broad; stamens 5-20; 

 anthers pink ; styles and nutlets 3-5 ; fruit short- 

 ellipsoid, slightly angular, crimson, slightly pruinose, 

 5"-8" thick; flesh firm at maturity. 



Southern Ontario to western Pennsylvania. May; 

 fruit ripe October. 



52. Crataegus disjuncta Sargent. Missouri Thorn. Fig. 2386. 



C, disjuncta Sarg. Trees & Shrubs i: 109. 1903. 



A tree, sometimes 20° high, with ascending and 

 spreading branches forming a broad crown. Thorns 

 l'-2l' long; leaves broadly ovate, ii'-3i' long, ii'-2V 

 wide, acute or acuminate at the apex, broadly cuneate, 

 rounded or truncate at the base, coarsely serrate or 

 twice serrate with 3-5 pairs of short acuminate lobes, 

 membranous, blue-green above, glabrous ; corymbs gla- 

 brous, 3-6-flowered ; flowers 7" or 8" broad ; stamens 

 about 10; anthers large, pink; calyx-lobes lanceolate, 

 entire; styles and nutlets 4 or 5 ; fruit short-ellipsoid, 

 angular, 6" or 2" thick, green, becoming scarlet, 

 pruinose; calyx-tube conspicuous, its lobes deciduous. 



Western Kentucky to southern Missouri. May ; fruit ripe 

 October. 



53. Crataegus Gattingeri Ashe. Gattinger's Thorn. Fig. 2387. 



C. coccinea var. oligandra T. & G. Fl. N. Am. i : 



465. 1840. 

 C. Gattingeri Ashe, Journ. E. Mitch. Soc. 17' : 12. 



1900, 

 C. bcdfordensis Sarg. Proc. Acad. Nat. Sci. Phil, 



62 : 185. 1910. 



A shrub, sometimes 15° high, with ascend- 

 ing branches and irregular crown. Spines 

 numerous, i'-2' long; leaves narrowly ovate 

 to deltoid, i'-2i' long, l'-2' wide, acuminate 

 at the apex, broadly cuneate or rounded at 

 the base, serrate or broadly serrate, lobed 

 toward the apex, membranous, glabrous, dark 

 green above, paler beneath ; corymbs glabrous, 

 many-flowered; flowers 7" or 8" broad; sta- 

 mens 10-20; anthers small, pink; calyx-lobes 

 triangular, persistent ; styles and nutlets usu- 

 ally 3 or 4; fruit globose, angular, red, 

 slightly pruinose, 4"-6" thick ; flesh hard at 

 maturity. 



Southern Pennsylvania to southern Indiana 

 and south to West Virginia and central Tennes- 

 see. May ; fruit ripe October. 



