190 PROCEEDINGS OF THE ACADEMY OF [Maich, 



fruit dark orange-red, sometimes 3-5-angled, slightly pruinose; 



calyx cavity deep and narrow 18. C. loctans. 



Leaves broad-ovate, scabrate on the upper surface. 

 Calyx cavity of the fruit deep and narrow. 



Leaves yellow-green; anthers pale pink; fruit scarlet. 



19. C. ruricola. 

 Leaves blue-green; anthers dark rose color; fruit orange- red. 



20. C. effcra. 

 Calyx cavity of the fruit broad and shallow ; leaves ovate to oval, 

 blue-green 21. C. coerulea. 



1. Crataegus medioxima «• sp. 



Glabrous with the exception of the hairs on the upper surface 

 of the young leaves. Leaves broadly ovate to semi-orbicular, acute, 

 rounded or abruptly cuneate at the wide entire base, finely often 

 doubly serrate above, with straight glandular teeth, and very slightly 

 divided usually only above the middle into 3 or 4 pairs of small acute 

 lobes; nearly fully grown when the flowers open about the 20th of May 

 and then thin, light yellow-green, smooth, lustrous and slightly hairy 

 above especially along the midribs and veins, and at maturity thin, 

 dark yellow-green smooth and glabrous on the upper surface, paler on 

 the lower surface, 4-5 cm. long and 3-3.5 cm. wide, with thin promi- 

 nent midribs and primary veins; petioles slender, slightly wing-mar- 

 gined at the apex, glandular while young, with mostly deciduous 

 glands, 2-2.5 cm. in length. Flowers 1.4-1.6 cm. in diameter, on 

 short slender pedicels, in compact mostly 5-8-flowered corymbs, the 

 long lower peduncles from the axils of upper leaves; calyx-tube nar- 

 rowly obconic, the lobes long, slender, red and acuminate at the apex, 

 entire, reflexed after anthesis; stamens 5 or 6; anthers deep rose- 

 purple; styles 2-5. Fruit ripening and falling early in October, on 

 short stout drooping pedicels, in few-fruited clusters, subglobose or 

 rarely short-oblong, somewhat flattened at the ends, slightly pentag- 

 onal, dark red marked by numerous large pale dots, 1.1-1.4 cm. in 

 diameter; calyx little enlarged, with a narrow deep cavity pointed in 

 the bottom, and small reflexed closely appressed often deciduous 

 lobes; flesh thick, hard, yellow-green, rather bitter; nutlets 2-5, nar- 

 rowed and rounded, or when 5, acute at the ends, ridged on the back 

 with a broad low grooved ridge, 7-7.5 mm. long and 4-4.5 mm. wide. 



An arborescent shrub 3-4 m. high, with stems sometimes 2.5 cm. 

 in diameter, covered with dark gray scaly bark, large smooth gray 

 branches, and stout nearly straight branchlets dark orange-green 

 more or less tinged with red when they first appear, becoming purple 

 and marked by dark lenticels and somewhat pruinose in their first 



