1905.] NATURAL SCIENCES OF PHILADELPHIA. 655 



the end of September, erect on short stout sUghtly hairy pedicels, short- 

 oblong, full and rounded at the ends, orange or orange-green to bronze- 

 green when ripe, lustrous, about 1.5 cm. long and 1.2 cm. wide; calyx 

 enlarged, sessile, with a broad deep cavity, and reflexed and closely 

 appressed lobes; flesh thin, green and hard; nutlets 5, rarely 6, thick, 

 gradually narrowed to the acute ends, irregularly ridged and deeply 

 grooved on the back, 7 mm. long. 



A dichotomously branched straggling shrub, from 1 to 2 m. in height, 

 with slender nearly straight branchlets, orange-brown and coated when 

 they appear with long pale matted hairs, dull reddish-brown and pu- 

 bescent at the end of their first season and dark gray-brown the follow- 

 ing year, and armed with very slender straight dark purple spines, ashy- 

 gray and long persistent on the old stems, from 1.5-3 cm. in length. 



Delaware county: Open hillsides along Lownes' Run, Springfield, 

 Dr. George Smith, May, 1867; B. H. Smith (No. 201, type!). May, 1902; 

 Smith and Sargent, September, 1902. Bucks county : Near Sellersville, 

 C. D. Fretz (No. 182), May and September, 1903. 



X.— TOMENTOS.E. 



Leaves thin, with midribs and veins only slightly impressed on their 

 upper surface; fruit obovate to oblong, orange or orange-red; 

 stamens 20. 



Anthers rose color, 1. C.tomentosa. 



Anthers yellow, 2. C. structilis. 



Leaves subcoriaceous to coriaceous, with midribs and veins deeply im- 

 pressed on their upper surface; fruit subglobose to short-oval, 

 usually scarlet. 

 Stamens 20. 



Anthers rose color or pink. 



Leaves villose below at maturity. 



Pedicels villose; fruit long-stalked, in drooping clusters, often 

 1.5 cm. in diameter; leaves elliptical, acute at the ends; 

 anthers light or dark rose color, ... 3. C. succulenta. 

 Pedicels glabrous; fruit on erect pedicels, in few-fruited clus- 

 ters, about 1 cm. in diameter; leaves rhombic to obo- 

 vate; anthers pale pink, 4. C.radiosa. 



Leaves nearly glabrous below at maturity, ovate to oval or 

 obovate; fruit on erect glabrous pedicels, in few-friiited 

 clusters, 7-8 mm. in diameter; anthers dark rose color, 



5. C. micrantha. 



Anthers yellow ; leaves rhombic to oval ; fruit on drooping slightly 



villose pedicels, in many-fruited clusters, . . 6. C. opica. 



Stamens 10; anthers pale yellow; leaves ovate to rhombic; fruit on 



erect or spreading glabrous pedicels, in few-fruited clusters, 



7. C. chadsfordiana. 



