1917] Fernald,— A new Juncus from Cape Cod 19 
the fact that, having detected the species in Dr. Sinnott’s collection, 
now in the Herbarium of the New England Botanical Club, the writer 
and other members of the Club spent two days in June last, in the 
neighborhood of Hyannis with the plant especially in mind but 
without detecting it; later, in September, ten members of the Club 
watched without success for it during a two-day field-trip; on October 
7 and 8, Messrs. Butters, St. John and the writer devoted two long 
days to a systematic search for it in many of the brackish swales in 
southern Barnstable and Yarmouth without success and on October 
14, when the plant was finally found, it was in only one very limited 
station, a few rods long and perhaps a rod wide at the upper margin of 
a marsh, where the deeply creeping tough rootstocks extended on the 
one side into brackish or even saline marsh, on the other into acid peat. 
In this very restricted station, however, the plant was so prolific as 
quite to exclude all other species from the limited area. 
We now know on the Atlantic coast of North America three of the 
seven species of the Junci thalassii (four if we include J. acutus, var. 
Leopoldii of Bermuda); two of them from only a single restricted 
station each: J. maritimus on Coney Island; J. pervetus on Cape Cod. 
That other stations along the Atlantic seaboard should be expected is 
apparent and it is hoped that this extended notice may result in their 
discovery. In the past J. acutus, J. maritimus and J. Roemerianus 
have been credited to the coast of New Jersey, but the status of these 
plants in New Jersey is thus summarized by Dr. Witmer Stone. 
“We can find no New Jersey specimens of J. maritimus or J. roe- 
merianus, and their inclusion in the New Jersey flora seems to rest 
wholly upon a statement of Pursh (Fl. Amer. Sept. I. 235. 1814). He 
gives ‘Juncus acutus on the sandy seacoast New Jersey, &c.’ In the 
first edition of Gray’s Manual this record is quoted under Juncus 
maritimus, while in the fifth edition and earlier in Trans. St. Louis 
Acad. II. 439, 1866, Engelmann shows that the J. maritimus of Ameri- 
can authors is really J. roemerianus, which he continues to cite from 
New Jersey. Prof. M. L. Fernald, who corroborates the above, also 
calls my attention to this statement by Englemann (Trans. St. Louis 
Acad. II. 490) —‘The New Jersey locality rests on the doubtful 
authority of Pursh; I have seen no specimens collected farther north 
than Wilmington, N. C. As no one has found it in the State subse- 
quently, I think we may safely expunge it from the list.” 1 
1Stone, Pl. so. N. J. 330 (1912). 
