29S 



MALACEAE. 



Vol. II. 



3. Crataegus schizophylla Eggl. Martha's Vine- 

 yard Thorn. Fig. 2337. 



Crataegus schicophyllaJLggl. BuW.Torr. C\\ih 38 : 243. 191 1. 



A small tree, sometimes 12° high, with ascending 

 irregular branches. Spines numerous, i'-3' long; leaves 

 oblong-obovate to ovate, f'-2i' long, i'-if wide, acute 

 or obtuse at the apex, cuneate at the base, coarsely ser- 

 rate with short acute lobes towards the apex, glabrous, 

 slightly impressed-veined ; petioles i'-J' long; corymbs 

 glabrous; flowers about 6" broad; calyx-lobes lanceo- 

 late, acute; stamens about 10, anthers pale purple; 

 styles and nutlets usually 2; fruit pyriform-ellipsoid, 

 dark red, about s" thick ; calyx persistent, its lobes 

 reflexed; flesh hard at maturity; nutlets ridged on the 

 back. 



Common on Martha's Vineyard, Massachusetts, 

 fruit ripe October. 



June ; 



Palmer's Thorn. 



4. Crataegus denaria Beadle. 

 Fig. 2338. 



Crataegus denaria Beadle, Bilt. Bot. Stud, i : 2. 131. 1902. 

 Crataegus Palmeri Sarg. Trees & Shrubs i : 57. 1903. 



A small tree, sometimes 25° high, with spreading 

 branches and a round-topped crown. Spines i'-24' long; 

 leaves oval, ovate, to oblong-obovate, 1-3' long, \'-2' 

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

 serrate, crenate-serrate or doubly so, often slightly 

 lobed towards the apex, dark green and shining above, 

 slightly impressed-veined ; corymbs glabrous or slightly 

 pilose; flowers about 6" broad, stamens usually ten, 

 anthers yellow; styles and nutlets 2-5; fruit globose or 

 subglobose, reddish-green or light red, about 4" thick. 



Low rich soil, western Kentucky and Missouri, south to 

 central Mississippi. Intermediate between C. Crus-galli and 

 C. viridis. April-May ; fruit ripe October. 



5. Crataegus Reverchoni Sargent. Reveichon's Thorn. Fig. 2339. 



Sarg. Trees & Shrubs i : 55 

 61 



Crataegus Reverchoni 



1903. 

 C. Jasperensis Sarg. Rep. Mo. Bot. Card. 19 : 



July 1904. 

 C. nibrifolia Sarg. Rep. Mo. Bot. Card. 19 : 66. July 



1908. 

 C. nibrisepala Sarg. Mo. Bot. Card. 19 : 70. July 



1908. 



A shrub or tree, sometimes 20° high, with 

 numerous zigzag branches and an irregular round- 

 topped crown. Spines l'-2' long; leaves ovate, 

 oval or obovate, li'-ii' long, i'-i' wide, acute or 

 obtuse at the apex, broadly cuneate or rounded at 

 the base, serrate or serrate-dentate, often with I 

 or 2 pairs of shallow lobes toward the apex, 

 coriaceous, dark green and shining above, gla- 

 brous; corymbs glabrous; flowers 6" or 7" broad; 

 stamens 10-20; anthers yellow or pink; styles and 

 nutlets 3-5; calyx-lobes lanceolate, entire; fruit 

 subglobose to compressed, globose, light scarlet to 

 orange-red, 4" or 5" thick; calyx-lobes reflexed. 



Southern Missouri and 

 April ; fruit ripe October. 



Dallas County, Texas. 



