GENUS 6. 



APPLE FAMILY. 



18. Crataegus pertomentosa Ashe. 

 Prairie Thorn. Fig. 2352. 



Crataegus pertomentosa Ashe, Journ. E. Mitch. 



Soc. 16 : 70. Feb. 1900. 

 Crataegus campestris Britton, Bull. N. Y. Bot. 



Card. 1:5: 449. March 1900. 



A small tree, sometimes 20 high, with 

 nearly horizontal branches and a flattened 

 crown. Spines numerous, curved, i'-3i' 

 long; leaves oblong to obovate, ii'-2-|' long, 

 |'-2i' wide, acute at the apex, abruptly 

 cuneate to rounded at the base, finely and 

 doubly serrate or lobed, slightly villous or 

 glabrate above, villous beneath, particularly 

 along the veins, vivid dark green, subcoria- 

 ceous; corymbs and calyx densely villous; 

 flowers about 10" broad ; stamens 10-15 \ 

 styles and nutlets 2 or 3 ; calyx-lobes deeply 

 serrate; fruit globular or nearly so, 4"-6" 

 thick, cherry-red, villous when young. 



Rocky barrens, Iowa, Kansas and Missouri. 

 May ; fruit ripe September. 



19. Crataegus Vailiae Britton. 

 Miss Vail's Thorn. Fig. 2353. 



C. Vailiae Britton, Bull. Torr. Club 24 53. 



1897. 

 Crataegus missouriensis Ashe, Bull. N. Car. 



Agric. Coll. 175: no. 1900. 



A shrub, sometimes 10 high, with 

 ascending branches and a round sym- 

 metrical crown. Spines numerous, slen- 

 der, i '-2' long; leaves elliptic-ovate to 

 obovate, \'-2.\' long, i'-if wide, acute 

 at the apex, cuneate, coarsely serrate 

 or doubly so, subcpriaceous, rough- 

 pubescent and shining above, pale- 

 tomentose beneath ; petioles 2" -4" long ; 

 corymbs pubescent; flowers 6" or 7" 

 broad; stamens about 20; anthers pink; 

 styles and nutlets 3-5 ; calyx-lobes 

 laciniate; fruit subglobose to pyriform, 

 orange-red, about 5" thick, slightly vil- 

 lous, calyx-tube rather prominent, the 

 lobes per3istent, reflexed. 



Rocky Muffs and river banks, south- 

 western Virginia to North Carolina and 

 Missouri. May ; fruit ripe October. 



20. Crataegus Brainerdi Sargent. Brainerd's 



Thorn. Fig. 2354. 



C. Brainerdi Sarg. Rhodora 3 : 27. Feb. 1901. 

 C, scabrida Sarg. Rhodora 3: 29. 1901. 

 C. Egglestoni Sarg. Rhodora 3 : 30. 1901. 

 C. asperifolia Sarg. Rhodora 3: 31. 1901. 

 C. Schuettei Ashe, Journ. E. Mitch. Soc. 2 : 7. July 1901. 



A shrub or tree, sometimes 20 high, with ascend- 

 ing branches. Spines \'-2\' long; leaves elliptic to 

 ovate (in the Egglestoni type often oval to orbic- 

 ular), acute or acuminate at the apex, abruptly 

 cuneate or rounded at the base; finely serrate _ or 

 doubly^ serrate and lobed, ii'-3*' long, \'-2\' wide, 

 subcoriaceous or membranous ; bright green and gla- 

 brate or occasionally scabrate above, pubescent along 

 the veins beneath ; corymbs glabrous ; flowers about 

 10" broad; stamens 5-20; anthers pink; styles and 

 nutlets 2-4; fruit short-ellipsoid to globose, cherry- 

 red to scarlet, about 5" thick; nutlets usually with 

 shallow pits on the ventral faces. 



New England to northeastern Iowa, south to Penn- 

 sylvania. May; fruit ripe September. 



