1925] SARGENT, NOTES ON CRATAEGUS 3 



densely villose when the flowers open, becoming nearly glabrous, 1.2-3 

 cm. in length; stipules oblanceolate, long-acuminate, coarsely glandular- 

 serrate, 1-1.2 cm. long, deciduous in May. Flowers opening early in April, 

 2 cm. in diameter, in compact many-flowered villose corymbs, furnished 

 with deciduous hairs; calyx-tube glabrous, the lobes narrow-acuminate, 

 coarsely glandular-serrate, glabrous on the outer surface, sparingly villose 

 on the inner surface; stamens 20; anthers "brownish gray"; styles 2 or 3, 

 surrounded at the base by a conspicuous tuft of long white hairs. Fruit 

 subglobose to short-oblong, scarlet, 1.5 cm. in length; nutlets 5, acute 



at the ends, broadest at the apex, obscurely grooved on the back, 6-8 

 cm. in length. 



A slender tree 4-5 m. high with a trunk rarely more than 15 cm. in 

 diameter, and spreading branches; common in open woods, growing on 

 creek bottoms and dry uplands near Olney, Richland County, south- 

 eastern Illinois, R. Ridgway, May 14, 1921, April 29 and August 20, 1924 

 (Nos. 1375, 2087 & 2041, type); E. J. Palmer, May 14, 1923 (No. 22615). 



Judging by the habit of this tree and the shape of the leaves it is an 

 unusually small-fruited Molles species approaching in the size of the fruit 

 plants of the Coccineae group which, although common in northern 

 Illinois, is not found as far south anywhere as Richland County. 



I am glad to associate with this interesting plant the name of Robert 

 Ridgway, the distinguished ornithologist. 



X Crataegus Whitakeri, n. hyb.? (Molles sp.? X Macracanthae sp.?). 



Leaves broad-ovate, acute, rounded or abruptly or gradually narrowed 

 at base, often slightly divided into short acute lateral lobes and coarsely 

 and irregularly serrate with acute teeth, sparingly villose below, espe- 

 cially on the midrib and primary veins, becoming nearly glabrous in the 

 autumn, dark green on the upper surface, rather paler on the lower sur- 

 face, 8-10 cm. long and 6-7 cm. wide; petioles stout, densely villose early in 

 the season, becoming glabrous or nearly glabrous, and 8-15 mm. in length. 

 Flowers opening early in June, 2 cm. in diameter, on slender pedicels 

 densely villose like the 6-12-flowered rather compact corymbs; calyx 

 thickly covered with matted pale hairs, the lobes glandular-serrate, nearly 

 glabrous above, densely villose below, deciduous or persistent on the fruit; 

 stamens 20; anthers "pale green fading to blackish"; style surrounded at 

 the base by a conspicuous tuft of white hairs. Fruit ripening early in 

 October, on stout pedicels, in nearly glabrous few-fruited clusters, sub- 

 globose to ovoid, crowned by the persistent calyx-tube, orange red, up to 

 1.5 cm. in diameter; nutlets 2, ellipsoid, often slightly broader at the apex, 

 rounded or slightly ridged on the back, furnished on the inner surface 

 with irregular shallow depressions or ocassionally with a short deep pit, 

 1-1.2 cm. long, 1 cm. wide. 



A tree from 5-6 m. tall, with a trunk 3.5 dm. in diameter, a wide head 

 of spreading branches and stout branchlets without spines in the Arbo- 

 retum specimens. 



