230 PROCEEDINGS OF THE ACADEMY OF [March, 



Fruit oblong; leaves broadly ovate and rounded at the base 



to rhombic 10. C. callista. 



Fruit ovate; leaves ovate to oval, cuneate at the base 



11. C. alpisla. 

 Anthers rose color or pink. 



Leaves smooth and glabrous at maturity; corymbs glabrous. 

 Fruit short-oblong to slightly obovate, canary yellow. 



Leaves ovate to obovate; flowers in 6-12-flowered corymbs; 



anthers dark rose color 12. C. fortunata. 



Leaves oval to ovate; flowers in 5-6- flowered corymbs; 



anthers light pink 13. C. hrfcola. 



Fruit depressed-ovate to short-oblong, rather broader than 

 high, russet green more or less tinged with red; leaves 

 ovate; anthers faintly tinged with pink.. ..14. C. Jenningsii. 

 Leaves scabrate; anthers pink. 



Flowers on densely villose pedicels, in small 3-flowered corymbs; 

 calyx-tube villose; young leaves villose on the midribs and 

 veins below; fruit subglobose to short-oblong .15. C. scabra. 

 Flowers on glabrous pedicels, in broad 3-7-flowered corymbs; 

 calyx-tube and young leaves glabrous; fruit slightly 

 obovate 16. C. gratiosa. 



1. Crataegus Twiningii ". sp. 



Glabrous. Leaves ovate to oval, acute or acuminate, abruptly 

 or acutely cuneate at the base, coarsely doubly serrate, with straight 

 or incurved glandular teeth, and slightly divided above the middle 

 into 2 or 3 pairs of short acuminate lobes; tinged with red when they 

 unfold, nearly half-grown when the flowers open at the end of May and 

 then thin, light yellow-green, smooth and lustrous on the upper 

 surface and paler on the lower surface, and at maturity thin, dark 

 yellow green above, pale below, 4.5-6 cm. long and 3.5-4.5 cm. wide, 

 with stout midribs and slender primary veins; petioles stout, broadly 

 wing-margined to below the middle, glandular, with minute persistent 

 glands, often rose color in the autumn, 1.5-2.5 cm. in length; leaves on 

 vigorous shoots broadly ovate and rounded or cuneate at the base, or 

 nearly orbicular, coarsely serrate, more deeply lobed and often 6-7 

 cm. long and broad, with stout broadly winged conspicuously glandular 

 petioles. Flowers 2.5-3 cm. in diameter, on short stout pedicels, in 

 small compact 5-8-flowered corymbs, with large oblong-obovate to 

 linear more or less falcate green coarsely glandular-serrate bracts and 

 bractlets persistent until after the flowers open; calyx-tube broadly 

 obconic, the lobes separated by wide sinuses, foliaceous, short, broad, 

 acuminate, laciniately glandular-serrate above the middle, reflexed 

 'after an thesis; stamens 10; anthers yellow; styles 3-5, surrounded 

 at the base by a broad ring of pale hairs. Fruit ripening early in 



