ROSACEA 461 



hairs most abundant on the under side of the midribs and principal veins, and at 

 maturity thick and coriaceous, dark green and lustrous on the upper surface, pale 

 and puberulous on the lower surface, 3'-4' long and 2'-3' broad, with stout midribs, 

 4-6 pairs of primary veins and conspicuous secondary veinlets; their petioles stout, 

 more or less winged toward the apex, villose, ultimately glabrous, tinged with red 

 below the middle, l^'-2' long, after midsummer often twisted at the base, bringing 

 the lower surface of the leaf to the light; on vigorous shoots usually more coarsely 

 serrate and much more deeply lobed, with broadly winged petioles, and falcate 

 coarsely glandular-serrate stipules sometimes 1' in length. Flowers V in diameter, 

 on long slender pedicels, in broad loose lax compound many-flowered tomentose 

 corymbs; calyx-tube narrowly obconic and tomentose, the lobes abruptly narrowed 

 from broad bases, elongated, acute, entire, villose; stamens 10; anthers large, rose 

 color; styles 2, or generally 3, surrounded at the base by a narrow ring of pale 

 tomentum. Fruit, ripening usually early in October, on slender elongated pedicels, 

 in broad many-fruited drooping glabrous or puberulous clusters, short-oblong to 

 oblong-obovate, full and rounded at the ends, bright carmine-red, marked by occa- 

 sional large dots, f'-l' long, |' broad; calyx conspicuous, with enlarged and elon- 

 gated closely appressed lobes; flesh thick, yellow, sweet and mealy; nutlets 3 or 

 rarely 2, thick, narrowed and acute at the base, full and rounded at the apex, rounded 

 and ridged on the back, with a high broad ridge, about ^"g' long. 



A tree, sometimes 20 high, with a tall trunk often a foot in diameter, covered 

 with dark brown scaly bark, ascending or spreading branches forming a broad open 

 irregular head, and stout branchlets at first tomentose, becoming orange-brown, 

 glabrous, and very lustrous during their first season and light gray the following 

 year, and armed with stout straight or curved chestnut-brown shining spines 2'-3' 

 long and usually pointed toward the base of the branch. 



Distribution. Rocky shores of sounds and bays* southeastern Maine, Islesboro, 

 and Belfast Bay to the island of Mount Desert. 



92. Crataegus Margaretta, Ashe. 



Leaves broadly rhomboidal, oblong-obovate to rarely ovate, acute or rounded at 

 the apex, gradually narrowed and usually entire below, coarsely often doubly crenately- 

 serrate above, with mostly glandless teeth, and divided above the middle or frequently 

 only at the apex into short broad rounded or acute lobes, membranaceous when the 

 flowers open in May, and roughened above by short pale hairs and glabrous below, and 

 at maturity firm and rather leathery in texture, or subcoriaceous, glabrous, smooth, 

 dark green, and somewhat lustrous on the upper surface, pale on the lower surface, 

 I'-l^' long, 1' wide, with yellow midribs and 3-5 pairs of primary veins extending 

 very obliquely to the points of the lobes; their petioles slender, often slightly winged 

 toward the apex, glandular at first, with minute dark red caducous glands, V~l' 

 long; on vigorous shoots broadly ovate or semiorbicular, usually more deeply and 

 more generally lobed, often 3' long and 2'-3' wide. Flowers about f in diame- 

 ter, on slender elongated pedicels, in 3-12-flowered compound thin-branched slightly 

 villose corymbs; calyx-tube narrowly obconic, slightly villose toward the base, or 

 glabrous, the lobes gradually narrowed from below, acuminate or short-pointed at 

 the apex, finely and irregularly glandular-serrate, glabrous, or villose on the inner 

 surface; stamens usually 20; anthers small, light yellow; styles 2 or 3, surrounded 

 at the base by a narrow ring of pale tomentum, and villose below the middle, with 

 occasional long spreading hairs. Fruit ripening and falling at the end of Septem- 



