Bicknell : Ferns and flowering plants of Nantucket 489 



They are shown as broadly ovoid or obovoid without visible 

 nerves and are not to be reconciled with the elliptic, conspicu- 

 ously costate perigynia of C. costellata. Finally Bailey has put on 

 record that he has examined the type of C. viresccns in Willde- 

 now's herbarium and in regard to it he has repeated in several places 

 that it is our smaller shorter-spiked plant (Mem. Torrey Club I : 

 61,76,78. 1889.) 



*Carex tenuis Rudge. 



Locally common but occuring only in a few localites : at sev- 

 eral places in the " Woods " and along the borders of Trot's 

 Swamp ; copse on bank at Watt's Run. In perfect fruiting condi- 

 tion June 10; few perigynia remaining September 15, 1906. 



Carex pallescens L. 



Frequent or almost common, but somewhat local, although 

 rather widely distributed over the island except apparently along 

 the south side. Spikes of full size June 7. 



Carex Pennsylvania Lam. 



Abundant, sharing with C. Goodenovii and 

 distinction of being one of the three most a 



<!pkalantha 



abundant Car ices on 



the island. Fully mature J 



f es in the late summer and autumn. 



The common woodland form with soft and very narrow elong- 

 at ed leaves is abundant over the moorland and in dry thickets^ 

 0n the exposed plains the plant is lower and much stiffer-leaved 

 an <J separates further into two forms which in their extreme phases 

 are set off markedly from each other on close comparison. In one 

 ** Pale leaves become stiff and coarse and over 3 mm. wide, and 

 the stiff culms mostly 5-15 cm. high ; in the other the leaves are 

 na ^wer and rougher and the culms rather longer, although shorter 

 **> the leaves ; in this also the perigynia are mostly larger than in 

 ^companion form and less abruptly rounded to a slightly longer 

 shar Per-toothed beak, the scales are also longer and sharper ana 

 Cot »nionly more spreading and more deeply colored. 



-\Y. 3 : 411. 1836- 



1824. FM* Torr - 



c - alpestris Schwein. &Torr. Ann. Lye. N. Y. 1 : 34* • 

 2 5- Not Allioni, fide Torr. 



C 



Jour. I. 7 



