104 



MISSOURI BOTANICAL GARDEN 



veins; petioles slender, slightly wing-margined at the apex, coated while 

 young with matted pale hairs, becoming nearly glabrous, 2-3.5 cm. in 

 length; stipules linear-obovate, falcate, acute, glandular-serrate, fading 

 brown, often persistent until the floweis open; leaves on vigorous shoots 

 very coarsely serrate, more deeply lobed, and often 10-11 cm. long and 



' 9-10 cm. wide, with foliaceous lunate coarsely serrate deciduous stipules. 

 Flowers 1.7-1.8 cm. in diameter, on long slender slightly hairy pedicels, 

 in compact mostly 8-12-flowered corymbs, with linear-obovate to linear 

 glandular bracts and bractlets often persistent until the flowers open; 

 calyx-tube broadly obconic, glabrous, the lobes abruptly narrowed from 

 the base, short, wide, acuminate, glandulaf-scrrate usually only above the 

 middle, glabrous on the outer, shghtly villose on the inner surface, reflexed 

 after anthcsis; stamens 20; anthers light yellow; styles 5, surrounded at 

 the base by a broad ring of pale tomentum. Fruit ripening in October, 

 on spreading nearly glabrous pedicels, in few-fruited clusters, subglobose 

 to short-oblong, green tinged with dull red, very hard (September 28, 1907), 

 slightly pubescent at the ends when fully grown, becoming glabrous, 

 1.2-1.3 cm. In diameter; calyx prominent, with a short tube, a broad 

 deep cavity pointed in the bottom, and slightly spreading and erect 

 often deciduous lobes hairy on the upper side; flesh green, dry and hard; 



. nutlets 5, gradually narrowed and rounded at the base, broad and rounded 

 at the apex, rounded and slightly grooved on the back, 7-7.5 mm. long, 

 and about 4 mm, wide. 



■ 



A shrub 3-5 m. hierh. with st.oms 7./i-in nm in rWamotor 



round 



d with dark scaly bark, spreading branches forming a 

 topped head, and slender slightly zigzag branchlets 

 dark green and sparingly villose when they first appear, be- 

 coming light chestnut-brown, lustrous, glabrous and marked 

 by dark Icnticcls in their first season and dull gray-brown 

 the following year, and armed with stout straight or slightly 

 curved chestnut-brown spines 1.5-2 cm. long. 



Steep blufTs of the Mississippi River, South St. Louis. St. 

 Louis Countv. J. 



H. Kellogg 



May 5, 1902, Sep- 

 . 1907. 



F 



3. Crataegus macrophylla, n. sp. 



Leaves ovate, acute or acuminate, rounded, truncate, abruptly cuneate 

 or slightly cordate at the broad base, coarsely often doubly serrate, with 

 straight glandular teeth, and slightly divided into 5 or 6 pairs of small 

 ftcuminate lateral lobes; about half-grown when the flowers open in the 

 last week of April and then very thin, dark yellow-green and strigose above 

 and covered below with pale hairs most abundant on the midribs and 

 veins, and at maturity thin, yellow-green, lustrous and scabratc on the 



upper surface and villose on the slender midribs and primary veins on the 



