92 . MISSOURI BOTANICAL GARDEN. 



2. Crataegus rubicundula Sargent, Trees and Shrubs, ii. 



7, t. 104 (1907). 



River cics Peres bottoms, Carondclct, St. Louis County, 

 H. Egged, 1886, J. IL Kellogg (No. 9 type) 1902, 1903. 



3. Crataegus platycarpa, n, sp. 



Leavcs ovate, acuminate, abruptly conoRVc-cuneale or rounded at the 

 entire base, sharply doubly serrate above, with straight glandular teeth, 

 and divided into 4 or 5 pairs of small acuminate spreading lobes; about 

 half-grown wlien the flowers open at the end of April and]then thin, yellow- 

 green and setose above and pale and furnished below with small axillary 

 tufts of white hairs, and at maturity thin, dark yellow-green, glabrous, 

 smooth and lustrous on the upper surface, paler and nearly glabrous on 

 the lower surface, 5-5.5 cm. long and 4-4.5 cm. wide, with slender midriks, 

 and thin primary veins arching obliquely to the points of the lobes; petioles 

 slender, narrow- wing-margined at the apex, slightly villose while young, 

 becoming glabrous, sparingly glandular, with usually deciduous glands, 

 L5-3 cm. in length; leaves on vigorous shoots usually rounded or truncate 

 at the broad base, more coarsely serrate and more deeply lobed, 6-7 cm. 

 long, and nearly as wide. Flowers 2-2.2 cm. in diameter, on short glabrous ^ 

 pedicels, in small compact usually 4- or 5-flowered corymbs, with linear- 

 obovate to linear glandular-scrratci bracts and bractlets fading rose color 



open 



calyx 



lobes wide, acuminate, entire or occasionally minutely dentate, glabrous, 

 reflexcd after anthesis; stamens 20; anthers large, bright red; styles 3-5, 

 surrounded at the base by a narrow ring of pale tomentum. Fruit ripening 

 the middle of October, on sliort sterna, in 1-3-fruited clusters, depressed- 

 globose, broader than high, somewhat angled at the base, deep orange-red, 

 1.1-3 cm, in diameter; calyx prominent, with a broad shallow cavity, 

 and small spreading or incurved persistent lobes; flesh thick, yellow, 

 becoming soft and succulent; nutlets 3-5, acute at the base, broader and 

 rounded at the apex, irregulariy ridged on the back, with a high narrow 

 ridge, about 6 mm. long, and 5 mm. wide. 



A tree 5-7 m. high, with a tnmk 5-12 cm. in diameter, 

 small branches, and slender nearly straight glabrous branch- 

 lets Hght green tinged with red when they first appear, be- 

 coming light chestnut-brown, lustrous, and marked by small 

 pale lenticels in their first season and ashy gray the following 

 year, and armed with numerous stout slightly curved purple 

 shining spines 3.5 5 cm. long. 



Dry ridges between swamps, Moark, on the boundary be- 

 tween Butler County and Arkansas, B. F. Bush (No. 4 type). 

 May 1 and Oct. 15. 1905. 



L 



