376 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
*Scrrpus Er1opHorum Michx. 
Miss Gardner’s herbarium contains a perfectly typical speci- 
men of this Scirpus collected in Polpis, September 6, 1915. 
*CAREX LAEVIVAGINATA (Kiikenth.) Mackenzie. 
This well defined sedge, recently interpreted by Mr. Mackenzie 
(Britton & Brown, Ill. Fl. ed. 2, 1: 371. 1913) and later ane 
nounced from New England by Professor Fernald (Rhodora 17: 
231-232. 6 Ja 1916), is frequent in wet places on Nantucket 
where I have collected it in Quaise, June 11, 1908, in open ground; 
in Polpis thickets, June 15, 1908, and along the creeks, June 28, 
1912. In Nantucket specimens the perigynia are mostly 5 mm. 
in length (4.5-5.5 mm.), those of C. stipata Muhl. averaging 4.5 mm: 
(4-5 mm.). The smooth sheaths, in contrast with the cross- 
wrinkled sheaths of C. stipata, are an obvious distinguishing feature 
and seemingly a perfectly constant one. 
*CAREX LUPULIFORMIS Sartwell. 
Bog hole near Eatfire, July 11, 1915. Not sufficiently mature 
to show conclusively the always distinctive form of the ripe 
achenia, but the character of the narrow pistillate spikes and the 
very long-peduncled staminate ones are unmistakable. 
*CAREX MONILE Tuckerm. 
In boggy places west of Trot’s Swamp, June 1, 1910, and on 
July 3, 1912, then fully mature. 
*CAREX CRINITA Lam. 
Several tufts along a brooklet flowing into Squam Pond, June 
20, 1910; one cluster by a pool near the shore in Quaise, June 9, 
IQII. ; 
CAREX DEBILIS Michx. 
This sedge, although not before reported, I think, from north 
of New Jersey, is widespread and locally common on Nantucket. 
Conversely the closely related species C. flexuosa, which it might be 
expected would be common there, appears to be one of the island’s 
rarer Carices. Recorded previously under the name C. tenuis 
Rudge. 
*CAREX FLEXUOSA Muhl. 
Carex tenuis Rudge. 
