CRATAEGUS IN MISSOURI* 119 



A slender shrub 5-8 m. high^ with numerous small stems, 

 and slender nearly straight branchlets covered when they first 

 appear with long matted white hairS; becoming light chestnut- 

 brown, puberulouS; and marked by pale lenticels in their first 

 season and dull gray-brown the following year, and armed 

 with very numerous stout straight chestnut-brown shining 

 spines 5-6 cm. long. 



Dry gravelly banks of small streams near Monteer, Shannon 

 County, J5.i^. Bush, (No. 7 B type), May 17 and Oct. 1, 1905, 

 (No. 7) Oct. 6, 1905, (No. 7 A) Oct. 6, 1905, (No. 7 C) Oct. 1, 

 1905. To this species appear to belong the following speci- 

 mens: Swan, Taney County, B. F. Bush, (No. 10) May 21 

 and September 22, 1905, (Nos. 10 B, 10 C and 10 D) Sep- 

 tember 1905, (No. 10 E), May 19, 1907; Christian County, 

 near Swan, B. F. Bush, (No. 10 F) May 21, 1907, (No. P) 

 September 25, 1905. 



5. Crataegus obscura, n. sp. 



Leaves ovate to rhombic, acuminate; concave-cuneate at the entire 

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

 and divided above the middle into 4 or 5 pairs of long slender acuminate 

 lobes ; fully grown when the flowers open about the middle of May and then 

 thin, yellow-green, strigose above and villose along the upper side of the 

 midribs and soft-pubescent below, and at maturity thin, light yellow-green 

 and scabrate above, and palerand pubescent below especially on the slender 

 midribs, and thin primary veins extending obUquely to the points of the 

 lobes, 6-7.5 cm. long and 4-6 cm. wide; petioles stout, narrowly wing- 

 mar^ned nearly to the base, densely villose while young, becoming nearly 

 glabrous, 1.5-1.8 cm. in length. Flowers 1-1,2 cm, in diameter, on slender 

 densely villose pedicels, in mostly 12-15-flowered hairy corymbs, the much 

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

 narrowly obconic, thickly covered with matted white hairs, the lobes long, 

 slender, acuminate, glandular-serrate, sparingly villose, reflexed after 

 anthesis; stamens 7-10; anthers rose color; styles 2 or 3, surrounded at 

 the base by a narrow ring of pale tomentum. Fruit ripening early in 

 October, on stout hairy erect pedicels, in few-fruited clusters, obovate, 

 full and rounded at the apex, abruptly narrowed at the base, hght orange- 

 red, lustrous, marked by small pale dots, 1-1.2 cm, long and 9-10 mm. 

 in diameter; calyx little enlarged, with a very narrow shallow ca\'ity, and 

 elongated slender laciniately serrate spreading and incurved often decidu- 

 ous lobes; flesh thin, pale yellow, soft and succulent; nutlets 2 or 3, 

 usually 2, rounded at the ends, ridged on the back, with a narrow low 

 ridge, penetrated on the inner faces by broad shallow cavities, about 

 6 mm. long, and 2 mm. wide. 



