302 



MALACEAE. 



Vol. II. 



15. Crataegus neofluvialis Ashe. New River Thorn. Fig. 2349. 



Crataegus neofluvialis Ashe, Journ, E. Mitch, Soc. 16 : 



71. Feb. 1900. 

 Crataegus michiganensis Ashe, Bull. N. Car. Agric. Coll. 



175 : III. Aug. 1900. 

 C. gemmosa Sarg. Bot. Gaz. 33; 119. 1902. 

 C. pisifera Sarg. Rhodora 7; 163. 1905. 



A tree, sometimes jo° high, with ascending and 

 spreading branches, and numerous spines 1-3' long. 

 Leaves elliptic-ovate to obovate, i'-3' long, i'-2i' 

 wide, acute or obtuse at the apex, cuneate at base, 

 sharply and doubly serrate with obtuse or acute lobes 

 towards the apex, coriaceous, dark green and shin- 

 ing above, pubescent along the veins beneath ; cor- 

 ymbs and calyx-tube glabrous or slightly villous; 

 flowers 6"-8" broad, calyx-lobes more villous inside, 

 glandular-laciniate ; stamens 15-20; anthers usually 

 pink, small ; styles and nutlets usually 2 or 3 ; fruit 

 globose or short-ellipsoid, dark red, z"-6" thick, 

 glabrous or slightly hairy; calyx-lobes reflexed ; 

 flesh thin, glutinous. 



Western Vermont to eastern Wisconsin, North Caro- 

 lina and Iowa. May ; fruit ripe September. 



16. Crataegus Calpodendron (Ehrh.) 



Haw. Fig. 



Mill. Diet. Ed. 8, n. 5. 1768. 



Pear-th 



orn 



Pear or Red 



Crataegus Crus-galli 



Not L. 

 Crataegus tomentosa Du Roi, Harbk. Baumz. Ed. i, 



183. 1771. Not L. 

 Mespihis Calpodendron Ehrh. Beitr. 2: 67. 1788. 

 C. Calpodendron Medic. Gesch. Bot. 83. 1793. 

 C, Chapniani Ashe, Bot. Gaz, 28 ; 270. 1899. 



A shrub or small tree, sometimes 20° high, with 

 ascending and spreading branches forming a 

 broad crown. Spines occasional, i'-2' long; leaves 

 rhombic-ovate, acute or acuminate at the apex, 

 ii'-4i' long, ii'-3' wide, finely and doubly ser- 

 rate, those on the vegetative shoots obtuse and 

 more entire than the others, pubescent on both 

 sides, becoming scabrate above, subcoriaceous, 

 dull green ; corymbs wdiite-tomentose ; flowers 

 about 7" broad; stamens about 20 (occasionally 

 10) ; anthers small, pink ; styles and nutlets usu- 

 ally 2 or 3; fruit pyriform or ellipsoid (in var. 

 microcarpa, globose), orange-red or red, 4" or 5" 

 thick; calyx-lobes reflexed, laciniate; flesh gluti- 

 nous ; nutlets with deep pits in their ventral faces. 



Central New York, northeastern New Jersey and Pennsylvania to Minnesota and Missouri, south 

 in the mountains to northern Georgia, May-June ; fruit ripe September. Long mistaken for 

 C. tomentosa L. White ojr_£ommon (Pa.) thorn. Thorn-apple or -plum. Black thorn. 



17. Crataegus globosa Sargent, Globose-fruited 

 Thorn, Fig, 2351. 



Crataegus globosa Sarg, Rep, Mo, Bot. Gard. 19: 118. 1908. 



A slender shrub, or tree, sometimes 25° high, with 

 numerous spines i'-2j' long. Leaves oval, obovate or 

 elliptic, ii'-4' long, It'-3:1' wide, coarsely serrate or 

 doubly serrate with shallow, obtuse lobes towards the 

 apex, acute or bluntish, broadly cuneate at the base, 

 membranous, dark yellow-green and pubescent, becom- 

 ing scabrate above, pubescent beneath; corymbs villous; 

 flowers 7"-8" broad ; calyx-lobes lanceolate, acuminate, 

 glandular-laciniate; stamens about 20; anthers large, 

 pink ; styles and nutlets usually 2 ; fruit globose or 

 short-ellipsoid, about 4" thick, light orange-red, shin- 

 ing; calyx-lobes closely appressed, often deciduous; 

 nutlets with large shallow cavities on the ventral faces. 



Southern Missouri to southeastern Kansas. May ; fruit 

 ripe October. 



