55% 



TREES OF NORTH AMERICA 



on the upper surface, pale-tomentose on the lower surface, 1V-2' long, and l'-l|' wide, 

 with prominent primary veins running obliquely to the point of the teeth, and, like the 

 stout midrib, conspicuously impressed on the upper side; petioles stout, hoary-tomentose, 

 about I' in length; stipules acuminate, scarious, covered on the margins with long M'hite 

 hairs, ' long. Flowers appearing early in March, nearly sessile, in 1-5 usually 4 or 5- 

 flowered clusters, hoary-toinentose, |'-f long; calyx broad, glabrous on the inner surface; 

 anthers tomentose. Fruit: mature calyx, light reddish brown, villose-pubescent, deeply 

 cleft at apex, |' long; akene slightly ridged on the back, %' in length, covered with long 

 lustrous white hairs; style If '-2' in length. 



A tree, occasionally 25 high, with a trunk often inclining, usually much contorted, 

 2'-10' in diameter and 6-8 long, stout wide-spreading branches, and stout branchlets. 

 hoary-tomentose when they first appear, marked by numerous small scattered lenticels, 

 bright reddish brown during two or three years, ultimately dark gray-brown and conspicu- 

 ously roughened by the enlarged ring-like leaf-scars. Bark light gray, sometimes slightly 

 broken by shallow fissures and marked by irregular cream-colored blotches. 



Distribution. Steep sides of a deep narrow arroyo on the south coast of Santa Catalina 

 Island, California. 



2. Cercocarpus alnifolius Rydb. 

 Cercocarpus parvifolius Sarg., in part, not Nutt. 



Leaves occasionally persistent until late in the spring, oval to slightly obovate, rounded or 

 rarely acute at apex, rounded or cuneate at base, and coarsely serrate above the middle with 

 broad apiculate teeth, when they unfold covered above with soft white hairs and pale and 



Fig. 508 



villose on the midrib and veins below, and at maturity thick, glabrous, dark green and lus- 

 trous on the upper surface, pale and yellow-green on the lower surface, If '-2f long, and 

 l'-2' wide, with a stout midrib and 6-7 pairs of slender prominent veins; petioles stout, 

 sparingly villose early in the season, soon glabrous, f'-f long; stipules ovate, abruptly 

 long-pointed, covered with silky white hairs. Flowers on slender hairy pedicels ^'-f ' long, 

 in 2-15 usually 4 or 5-flowered clusters; calyx-tube villose, about yV long, the limb villose 

 on the outer surface, \' broad. Fruit: mature calyx-tube many-nerved, deeply cleft at 

 apex, villose-pubescent, dark chestnut-brown, f'-f ' long; akene covered with long silky 

 hairs; style 2'-2f in length. 



A tree, 12-20 high, with one or two or three trunks, occasionally 8' in diameter, small 



