584 PROCEEDINGS OF THE AMERICAN ACADEMY 



or shortly petioled ; flowers in close, repeated,. leafy corymbs, or in a 

 loose raceme; bracts linear; calyx-tube slender, 5 — 12" long ; petals 

 f - 1' long ; capsule obovate to clavate-oblong, 2 - 5" long, more or less 

 attenuate to the base, subsessile or with a pedicel shorter than the cap- 

 sule, prominently ribbed and strongly winged, glabrous or pubescent, 

 seeds very minutely tuberculate. — From Canada to Illinois, and south- 

 ward to Florida and Louisiana. Very variable in the amount and char- 

 acter of the pubescence, in foliage, inflorescence, and size of the flowers. 



Var. ambigda, Torr. & Gray, may perhaps be distinguished as a 

 smaller flowered form, the petals 2 - 8" long, and with narrower lan- 

 ceolate to linear leaves. 



Var. linearis. ( (E. linearis, Michx.) Rather sparsely pubescent or 

 shortly villous ; leaves linear to narrowly lanceolate, remotely repand- 

 denticulate or entire ; capsule about equalling or usually shorter than 

 the pedicel, pubescent or glabrous, rather less broadly winged. — 

 Atlantic States, from Connecticut to Florida and Louisiana. It seems 

 impossible to maintain this as a distinct species. 



To this must also be referred (E. riparia, Nutt., with nearly glabrous, 

 obscurely denticulate leaves, slightly hairy only on the margin and 

 veins, as occasionally occurs in the typical form of the species. In 

 Nu Wall's original specimens the capsules are exactly as in (E. fruticosa, 

 and short-pedicelled. In other specimens the length of the pedicel is 

 quite variable. 



Var. humifusa, Allen. Perennial, low, decumbent or ascending, 

 somewhat woody at base, diffusely branched, minutely appressed-pubes- 

 cent ; branches slender, flexuous ; leaves linear to oblanceolate, \- 1^' 

 long ; petals 4 - 8" long ; capsules pubescent, about equalling the pedi- 

 cel, — Suffolk County, Long Island. A remarkable form, strongly 

 marked in its habit. 



16. CE. glauca, Michx. Perennial, erect, 2-3° high, branching 

 above, glabrous, subglaucous ; leaves ovate to ovate-oblong, 2-4' long, 

 acute or obtusish, sessile, repand-denticulate ; flowers in short, leafy 

 corymbs ; calyx-tube 6 - 10" long ; petals 9 - 15" long, emarginate ; cap- 

 sule glabrous, ovoid-oblong, 4 - 5" long, very broadly winged, usually 

 very abruptly attenuate into a pedicel, equalling or shorter than the 

 capsule. — In the mountains of Virginia and Kentucky, and southward 

 to Northern Alabama. 



t t Flowers white or purple, nodding in the bud, few in a loose 



