ROSACEA 



435 



A tree, 25-30 high, with a trunk a foot in diameter, spreading branches form- 

 ing a broad symmetrical head, and branchlets light green and villose when they first 

 appear, with long matted pale hairs, dull red-brown and pubescent in their first sea- 

 son, becoming glabrous the following year, and armed with occasional thin nearly 

 straight bright chestnut-brown shining spines usually about 1^' long. 



Distribution. Rich bottom-lands of the streams of Ridley County, southeastern 

 Missouri. 



68. Crataegus lanuginosa, Sarg. 



Leaves ovate to suborbicular, acute or rounded and short-pointed at the apex, 

 broadly cuneate or rounded at the entire base, coarsely and sharply doubly serrate 



above, with glandular teeth, and often irregularly divided above the middle into 

 short broad acute lateral lobes, less than half grown when the flowers open during 

 the last week of April and then dark green and villose above and covered below 

 with a thick coat of hoary tomentum, and at maturity subcoriaceous, dark blue- 

 green, lustrous, and scabrate on the upper surface, yellow-green and tomentose on 

 the lower surface, l^'-2' long, I'-l^' wide, with thick midribs and 3-5 pairs of stout 

 primary veins extending obliquely to the points of the lobes ; their petioles stout, 

 tomentose, ^'-f long; on vigorous shoots often broad, ovate, very coarsely glandu- 

 lar-serrate, rounded or truncate at the base, frequently 3' long and broad, their stip- 

 ules lunate, coarsely serrate, subcoriaceous, ^'-^' long. Flowers ^' in diameter, 

 on short stout pedicels covered with long matted pale hairs, in compact many* 

 flowered hoary-tomentose corymbs, with large glandular-serrate conspicuous bracts 

 and bractlets persistent until the flowers open; calyx-tube broadly obconic, hairy, 

 the lobes short, broad, acute, glandular, with minute stipitate glands, densely villose 

 on the outer, slightly villose on the inner surface; stamens 20; anthers rose color; 

 styles 5, surrounded at the base by large tufts of snow-white hairs. Fruit ripening 

 at the end of October, on short tomentose erect pedicels, in few-fruited clusters, 

 subglobose to short-oblong, full and rounded and slightly hairy at the ends, ^' in 

 diameter; calyx enlarged, with villose coarsely serrate usually erect spreading or 

 incurved persistent lobes, bright red on the upper side near the base; flesh thin, 

 orange color, dry and mealy; nutlets 5, thin, rounded and very irregularly ridged 

 on the back, about \' long. 



