﻿Eaton : Two new Species 341 



Eriophorum paucixervium (Engelm.). 



E. gracile, var. p 



i 



Jour. Sci. 45 : 105 



1846. 



Larger every way than R gracile. Culms 4. 5-10 dm., stouter, 

 obtusely three-angled, scabrous above upper leaf, sending off at 

 base after flowering one or more slender rhizomes, each of which 

 develops at tip into a new plant, and sends up 5-6 nodulose leaves 

 3-7-5 dm. long, 3-4 mm. wide, open, flat, or closed in drying, 

 scabrous margined on a loose, more or less nodulose and fibrillose 

 sheath ; culm and 2-3 radical leaves develop next year from center : 

 culm leaves 2 or 3, flat, with solid point sharply triangular in sec- 

 tion, keeled below, mostly closing like a book when dry, lower, 

 2-3 dm. upper 0.5-1.5 dm. lonsj, scabrous on edges: involucral 

 scales 2, larger than £. gracile, lower usually 1.2 cm. long, with 

 stiff triangular blade 2.5 cm. long or more; spikes 4-5, larger 

 and more densely flowered than E. gracile ; one or two usually 

 raised 1.2-2.5 cm - on scabrous pedicels ; outer scales ovate, inner 

 narrower, obtuse, light yellowish brown or red tinged, with green 

 midrib; bristles most abundant, 2-2.5 cm - lon S- 



July 1 -August 1. 



E. paucinervium was so named by Engelmann to distinguish 

 this plant from the European var. pleurinervmm. He gives Illinois, 

 Ohio and Pennsylvania as its habitat. The Harvard Herbarium 

 contains specimens from St. Francis, Me. (Fernald), Rumford, Me. 

 (PaDin), Wisconsin (Schnette), New Brunswick (Fowler), Beards- 

 town, 111. (Geyer). 



About here it occurs in every place where ZT. gracile grows and 

 '» several localities where that does not. It grows often in water 

 a "d sphagnum on water quaking bogs, while R. gracile prefers a 

 firmer foundation. To summarize : It is about twice as tall as 



: ' gracile, intermediate in robustness between that and E. poly- 

 stachyon. The culms are more sharply angled, the leaves long. 

 "at or channeled, while E. gracile has short, solid, bayonet-shaped 

 0ne S- Its peduncles are rough and pedicels bristly, while both 

 are smooth or nearly so in E. gracile. Its involucres are long 



aded, scales lighter colored, cotton more copious and longer, and 

 14 is about five weeks later in fruiting. 



Seabrook, \. H., March, 1898. 



