6S MISSOURI BOTANICAL GARDEN. 



and slender nearly straight branchlcts light orange-brown 

 and marked by numerous pale Icnticcls when they first appear, 

 becoming light chestnut-brown and lustrous in their first 

 season and darker the following year, and armed with slender 



long. 



;htly curved purplish shining spines 3-4 



Swan, Taney County 



(No. G A type), May 23 and Sept. 24, 1905, (No. 4 A) May 23 

 and Sept. 24, 1905, (No. C A) May 23 and Sept. 24, 1905, 

 (No. 6 B, 6 C and 6 D) May 16, 1907, (No. 22) April 24 

 and October 7, 1907. 



J 



31. Crataegus tenuisepala, n. sp. 



Glabrous with the exception of the hairs on the young leaves. Leaves 

 obovRte, rounded or acute and short-pointed at the apex, gradually 

 narrowed and concave-cuneate at the entire base, and coarsely serrate 

 above the middle, with straight or incurved glandular teeth; nearly fully 

 grown when the flowers open at the end of April and then thin, yellow- 

 green, smooth, lustrous and sliglitly hairy along the midribs above and 

 pale and glabrous below, and at maturity thin, dark bluish green and 

 lustrous on the upper surface, pale bluish green on the lower surface, 

 3.5-5.5 cm. long and 2.5-4 cm. wide, with slender yellow midribs, and 

 thin prominent primary veins; petioles slender, narrow-wing-margined to 

 the middle, slightly hairy on the upper side while young, soon glabrous, 

 5-12 mm. in length; leaves on vigorous shoots suborbicular to oval and 

 abruptly short-pointed, and often 5-6 cm, long and broad. Flowers 

 1.3-1.4 cm. In diameter, on long slender pedicels, in lax mostly 5- or 

 6-flowored corymbs, the elongated lower peduncles from the axils of upper 

 leaves; calyx-tube narrowly obconic, the lobes long, very slender, acumi- 

 nate and rose-colored at the apex, entire or irregularly glandular-dentate, 

 reflexed after anthesis; stamens 15; anthers dark rose color; styles 2-4. 

 Fruit ripening the middle of October, on slender drooping pedicels, in few- 

 fruited clusters, short-oblong, full and rounded at the ends, orange-red, 

 lustrous, marked by large dark dots, 9-10 mm. long and 8-9 mm, in 

 diameter; calyx little enlarged, with a wide shallow cavity, and spreading 

 orappressed usually persistent lobes; flesh thin, yellow, dry and mealy; 

 nutlets usually 3, gradually narrowed and rounded at the ends, ridged on 



5-5 



about 3 mm. wide. 



stem 



and slender nearly straight branchlcts dull chestnut 



marked 



their first season and dark reddish brown 



