444 



TREES OF NORTH AMERICA 



an open head often 20 across, and slender branchlets olive-green and slightly hairy 

 at first, dull red-brown and marked by many large pale lenticels during their first 

 season, becoming light gray and rather lustrous, and armed with stout straight dark 

 purple shining ultimately gray spines often 2' long. 



Distribution. Borders of woods near the shores of Fisher's Island Sound, Mum- 

 ford's Point, Grotou (once a part of New London), and Lyme, Connecticut (C. B. 

 Graves). 



76. Crataegus Hillii, Sarg. 



Leaves oblong-ovate, acuminate, rounded or rarely cuneate at the broad entire 

 base, coarsely doubly serrate above, with straight glandular teeth, and divided into 

 numerous short acuminate lateral lobes, when they unfold coated above with short 

 lustrous white hairs and densely tomentose below, particularly on the midribs and 

 veins, about one fourth grown when the flowers open the middle of May and then 

 roughened above by short hairs and still villose below, and at maturity thin but firm 

 in texture, light yellow-green and scabrate on the upper surface, pale yellow-green 

 on the lower surface, 2^'-3' long, 2'-2|' wide, with slender midribs often slightly 

 hairy near the base and 4 or 5 pairs of thin primary veins extending obliquely to the 

 points of the lobes; their petioles slender, densely villose early in the season, slightly 

 hairy in the autumn, and f'-l^ lo"g; stipules oblong, often elongated, coarsely 

 glandular-serrate, villose, usually persistent until the flowers open; on vigorous 



shoots often truncate or slightly cordate at the base, deeply lobed, with broad triangular 

 lobes, and 3^-4' long and broad, with stout rose-colored glandular petioles and hairy 

 lunate glandular- serrate stipules. Flowers about |' in diameter, on slender densely 

 villose pedicels, in broad many-flowered hairy compound corymbs, their large linear 

 to oblong bracts and bractlets occasionally persistent until midsummer; calyx-tube 

 narrowly obconic, thickly covered with long spreading white hairs, the lobes abruptly 

 narrowed at the base, broad, acuminate, coarsely glandular-serrate, glabrous on the 

 outer, villose on the inner surface; stamens 20; anthers pink; styles 4 or 5, sur- 

 rounded at the base by a narrow ring of pale tomentum. Fruit ripening from the 

 middle to the end of September, on slender puberulous pedicels, in drooping few- 

 fruited clusters, obovate, full and rounded at the apex, gradually narrowed to the 

 rounded base, crimson, lustrous, marked by small pale dots, ^'-|' long, |'-^' wide; 



