208 PROCEEDINGS OF THE ACADEMY OF [March, 



in length; leaves on vigorous shoots broadly ovate and rounded 

 at the base to rhombic, often 4-5 cm. long and 3.5-5 cm. wide, with 

 stout glandular petioles broad-winged to below the middle. Flowers 

 1.5 cm. in diameter, on slender pedicels, in compact 5-10-flowered 

 corymbs, the lower peduncles from the axils of upper leaves; calyx- 

 tube narrowly obconic, the lobes gradually narrowed from the base, 

 slender, acuminate, entire or minutely and irregularly glandular- 

 dentate, reflexed after anthesis; stamens 5; anthers light rose color; 

 styles 2-4, surrounded at the base by a broad ring of pale tomentum. 

 Fruit ripening late in September, on slender pedicels, in few-fruited 

 clusters, obovate, bright orange-red, lustrous, marked by small pale 

 dots. 1-1.2 cm. long and broad; calyx little enlarged, with a wide 

 shallow cavity, and spreading persistent lobes; flesh yellow, thin, and 

 solid; nutlets 2-4. acute at the ends, ridged on the back, with a high 

 narrow grooved ridge, about 5 mm. long and 3 mm. wide. 



A shrub 2-2.5 m. high, with stems covered with smooth gray bark, 

 and very slender slightly zigzag branchlets dark orange-green when 

 they first appear, becoming light chestnut brown, lustrous and marked 

 by small dark lenticels in their first season and dull reddish brown 

 the following year, and armed with stout recurved chestnut brown 

 shining spines 2.5-3.5 cm. long. 



Lincoln Heights, near Scranton, Lackawanna County, A. Twining, 

 (No. 4 type and No. 5), May 31 and September 25, 1907, (No. 45) 

 September 20, 1907, May 1908; Keyser Valley, near Scranton, A. Twin- 

 ing, (No. 16, with larger fruit) May 25 and October 1, 1907, September, 

 1908. 



5. Tenuifolle. 



Leaves thin, hairy on the upper surface early in the season, glabrous 

 at maturity (scrabrate in No. 10), usually yellow-green; petioles 

 long and slender. Flowers in glabrous corymbs; stamens 10 or 

 less (in the following species) ; anthers rose color or pink. Fruit 

 short-oblong to obovate, scarlet, lustrous, ripening in September; 

 flesh soft and succulent ; mature calyx small and sessile ; nutlets 2-4. 

 Calyx cavity of the fruit deep and narrow; fruit short-oblong to 

 slightly obovate, usually about 1.2 cm. long and 1 cm. wide. 

 Petioles rarely more than 2 cm. in length. 



Flowers up to 1.8 cm. in diameter; anthers dark rose color. 



1. C. tenella. 

 Flowers not more than 1.2 cm. in diameter; anthers light rose 



color 2. C. angustisepala. 



Petioles more than 2 cm. in length. 



Corymbs S-12-flowered; fruit short-oblong to slightly obovate. 



