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1093] CRA TAEGUS IN NORTHEASTERN ILLINOIS 397 



conspicuous as the leaves unfold. Flowers at the end of May. Fruit ripens 

 late in September. 



Oak woods in moist rich soil near the bank of the Calumet river, at Cal- 



May 27 and September 27 1901; C S, Sargent, September 



Hill. 



I go I 



1-2 



Crataegus Gaultii, n. sp. — Leaves elliptical to suborbicular, 

 acute or rounded at the apex, concave-cuneate or rounded at the 

 entire base, coarsely doubly serrate above, with straight glandu- 

 lar teeth, and occasionally slightly divided above the middle 

 into short acute lobes; nearly fully grown when the flowers open 

 and then very thin, light yellow-green and sparingly villose 

 above, pale and slightly pubescent below; at maturity thin but 

 firm in texture, glabrous, dark dull green on the upper surface, 

 pale on the lower surface, 6-9*=™ long, 5-7*="^ wide, with stout 

 yellow midribs deeply impressed above and 6 or 7 pairs of pri- 

 mary veins extending obliquely to the points of the lobes; 

 petioles stout, wing-margined usually to below the middle by the 

 decurrent base of the leaf-blades, villose on the upper side early 

 in the season, with matted white hairs, becoming nearly glabrous, 

 •"" long; stipules linear to linear-falcate, acuminate, glandular, 

 with minute bright red stipitate glands, caducous. Flowers 1-5^"" 

 in diameter on long slender slightly villose pedicels, in broad 

 many - flowered thin-branched hairy compound corymbs with 

 3-flowered peduncles from the axils of the two upper leaves; 

 bracts and bractlets linear, acuminate, glandular, turning red in 

 fading, mostly persistent until the flowers open ; calyx tube 

 narrowly obconic, the lobes broad, acuminate, coarsely glandular- 

 serrate, glabrous on the outer, villose on the inner face ; stamens 

 18-20; anthers pale pink; styles 2 or 3. Fruit drooping on 

 slender slightly hairy pedicels, in few-fruited clusters, subglobose 

 to short-oblong, 1.2-1.4*'°' in length; calyx sessile, with a broad 

 deep cavity and spreading and appressed coarsely serrate lobes; 

 flesh thick, yellow, soft and juicy; nutlets 2 or 3, full and round- 

 ed at the ends, about 1.2*=°' long and nearly as wide, full and 

 rounded on the back, with a high rounded ridge, the ventral 

 cavities long, deep and narrow. 



A tree 7-8"* in height with a trunk sometimes 2 "^ long and 2.5 ^"^ in diam- 

 eter, spreading branches forming a broad round-topped head, and slender 



