﻿1903] CRATAEGUS IN NORTHEASTERN ILLINOIS 3S3 



• 



inner face, reflexed after anthesis; stamens 10-20, usually 10; . 



anthers pinkish purple; styles 4 or 5, surrounded at the base by 



tufts of pale hairs. Fruit on short stout glabrous pedicels, in 



drooping, few-fruited clusters, oblong to slightly obovate, dull 



red or crimson, 1.2-1.8'^"' ^ong, 1-1.5'''" wide; calyx sessile with 



a broad shallow cavity and spreading closely appressed serrate 



usually persistent lobes ; flesh thin, pale yellow or nearly white, 



acidulous; nutlets 4 or 5, broad, acute at the ends, prominently 



ridged on the back, with a high narrow ridge, or often grooved, 

 6_^mm jj^ length. 



A broad much-branched shrub 2-4™ tall, or more often and in better soil 

 ■ a tree with an oblong head rising sometimes to the height of 8"" and forming 

 a trunk 2-3 "^ long and o.5-r.5^™ in diameter, covered with close dark gray 

 bark ; branchlets slender, light orange-yellow, marked by pale lenticels and 

 furnished with long scattered caducous white hairs when they first appear, 

 bright red-brown and lustrous during their first season, and dull dark gray- 

 brown the following year, and armed with many stout usually slightly curved 

 bright red-brown shining spines 2.5-4'='" long. Flowers the middle of May. 

 Fruit ripens from the 15th to the 20th of Septemberand usually falls about the 

 1st of October or earlier, sometimes remaining on the branches until the 

 middle of that month. 



- River banks and woods in rich soil, Leyden township. May and Septem- 

 her igoo, 1902, La Grange, June and September 1902, Thatcher's Park, May, 

 September and October 1901, May 1902, E, /. HilL 



Crataegus magniflora, n. sp. — Leaves oblong-ovate, acute or 

 acuminate, rounded or rarely cuneate at the broad entire base, 

 coarsely doubly serrate above, with straight glandular teeth and 

 slightly divided into numerous narrow acuminate lateral lobes ; 

 about half-grown when the flowers open and then membrana- 

 ceous, light yellow-green and roughened by short white hairs and 

 pale and glabrous below; at maturity thin but firm in texture, 

 dark yellow-green and scabrate on the upper surface, paler on 

 the lower surface, 6-7^"^ long, 4-6^"^ wide, with slender yellow 

 midribs and thin primary veins extending obliquely to the points 

 of the lobes; petioles slender, nearly terete, slightly grooved, 

 puberulous early in the season. soon glabrous, 1.5-3,5'^ in length; 

 stipules linear, acuminate, minute, bright red, caducous. Flow- 

 ers 2.5-3cm i^ diameter on long slender glabrous pedicels, in 

 compact 7-io-flovvered thin-branched glabrous corymbs; bracts 



