478 Bicknell : Ferns and flowering plants of Nantucket 



Cyperus strigosus L. 



Infrequent ; in low grounds. The stout form of the plant (var. 

 robustior Kunth) at Eatfire, with spikes 4-5 cm. thick and spike- 

 lets 2 cm. long. 



* Cyperus strigosus compositus Britton. 



Common in low grounds ; spikes cylindric, dense, 2-3 cm. 

 long, 1-2 cm. thick, usually of a brighter, more yellowish brown 

 color than in C. strigosus. A well-marked plant, having claims 

 to recognition as a distinct species. 



Cyperus erythrorhizos M 



Will 



as having been found on Nantucket in 1829 (Hovey's Magazine, 

 May i8, 1849, 219, 220). That the plant has not since been 

 found on the island would not of itself be an adequate reason for 

 not giving it a more formal place here. It so happens, however, 

 that the species is closely counterfeited in appearance by forms of 

 Cyperus strigosus compositus, so closely indeed, that when, recently, 

 at the herbarium of the New York Botanical Garden, a specimen 

 of the latter was laid on a sheet of Cyperus erythrorhizos it was 

 remarked by a very high authority on the genus, that, at a little 

 distance, the two specimens looked as if they might have grown 

 from one root ; without particular reference, therefore, to the sea e 

 characters and minuter anatomy one plant might easily De 

 taken for the other, and in view of the possibility of this, remote 

 though it be in the case of a record by Oakes, a rediscovery of the 

 plant on Nantucket would be at least a reassuring event. 



Cyp 



W *m — ^"» ■*■* ^ m m^f^ WAA ^^ AA W W% W*# I M. %^» M M M W* M X4 ff %-«* \i/ m> m m «w w — — — -— 



Everywhere in dry sandy soil, even at the highest poi 



Saul's Hills. 



Professor Fernald has recently called attention ( Rhod ° m . ca j 

 128, 129. 1906) to the very obvious differences between typ lC 



Cyperus filiculmis 



v^^k i»j y«a«n«w V dill cliiu Lino jjio.ni. \ji -->""-» i . - 



northern distribution, separating it as var. macdentus. ia * 



regarded these plants as distinct or so nearly so that, whatevt 

 precise relationship might be, it was to be expressed no m 

 curately by a trinomial than by a binomial designation. 



Cyperus Grayi Torr. 



1 *wr. comrno 11 - 



In pure sand on dunes and wastes, frequent or rau 



