CRATAEGUS IN MISSOURI. 99 



wing-margined and occasionally glandular near the apex, often rose- 

 colored late in the season, 1.5-2 cm. in length; leaves on vigorous shoots 

 thicker, mostly cordate at the base, more coarsely serrate, more deeply 

 lobed, and from 5-6 cm. long and wide. Flowers on long stout pedicels, 

 in narrow mostly 5- or 6-flowered corymbs, with oblong-obovate to linear 

 glandular rose-colored bracts and bractlets often persistent until the 

 petals fall, the elongated lower peduncles from the axils of upper leaves; 

 calyx-tube narrowly obconic, the lobes gradually narrowed from broad 

 bases, short, acuminate, entire or minutely glandular-serrate, reflexed 

 after anthesis; stamens 20; color of the anthers unknown; styles 4 or 5. 

 Fruit ripening in October, on stout elongated erect or spreading pedicels, 

 in few-fruited clusters, subglobose to short-oblong or often rather broader 

 than high, somewhat angled, green, finally becoming lurid red, pruinose, 

 1-1.2 cm. in diameter; calyx prominent, with a short tube, a wide deep 

 cavity broad and tomentose in the bottom, and spreading lobes, their tips 

 often deciduous from the ripe fruit ; flesh thin, dry and hard; nutlets 4 or 5, 

 gradually narrowed and acute at the apex, rounded at the base, rounded 

 and grooved or slightly ridged on the back, about 5 mm. long, and 4 mm. 

 wide. 



A shrub 2-7 m. high, with small intricately branched stems, 

 and stout slightly zigzag branchlets dark orange-green when 

 they first appear, becoming light chestnut-brown, very lus- 

 trous and marked by small pale lenticels in their first season 

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

 numerous slender nearly straight purple shining spines 4-7 



cm. long. 



Rocky barrens, Jackson County; widely distributed but 



not common. 



13. Crataegus disjuncta Sargent, Trees and Shrubs, i. 



109, t, 55 (1903). 



Monteer, Shannon County, B, F. Bush (Nos. 253, 345, 

 1488 and 1495), 1899, 1902. 



14. Crataegus rigida, n. sp. 



Glabrous with the exception of a few hairs on the upper side of the young 

 leaves. Leaves oblong-obovate, acuminate, rounded or abruptly cuneate 

 at the broad base, finely often doubly serrate above, with straight glandular 

 teeth, and sUghtly divided into 4 or 5 pairs of small spreading acuminate 

 lobes ; about half-grown when the flowers open from the 20th to the 25th 

 of April and then very thin, more or less tinged with red, smooth and 

 slightly hairy on the midribs above and pale below, and at maturity thin, 

 light yellow-green, smooth and lustrous on the upper surface, 4-5 cm. 

 long and 3-4 cm. wide, with slender midribs, and thin obscure primary 



