164 Rhodora [SEPTEMBER 
about the Gulf of St. Lawrence or in Newfoundland, where L. subulata 
abounds in brackish habitats or in the salt marshes. Certain speci- 
mens from the Andes of Bolivia strongly simulate L. subulata, but 
they are very immature and until further material is available, it is 
impossible to say anything of their exact identity. It would be highly 
improbable, however, though not without precedent, that L. subulata, 
which in North America seems so definitely confined to the temperate 
Atlantic shores, should also occur in the Andes. 
The nomenclatorial history of Limosella subulata may be sum- 
marized as follows: 
LIMOSELLA SUBULATA Ives, Trans. Phys.-Med. Soc. N. Y. i. 441 
(1817), Am. Journ. Sci. i. 74 (1819). L. tenuifolia Nutt. Journ. Acad. 
Nat. Sci. Phil. i. 115 (1817), not Wolf. Ygramela maritima Raf. Atl. 
Journ. i. 199 (1833). L. maritima Raf. l. c. (1833). L. aquatica, var. 
tenuifolia Torr. Fl. N. Y. ii. 40 (1843), not Schiibler & Martens, FI. 
von Wiirtemb. 396 (1834). 
Gray HERBARIUM. 
REPORTS ON THE FLORA OF THE BOSTON 
DISTRICT,— XXVIII. 
Tus list includes a large number of waifs, mostly wool-waste plants 
from the West and from southern Europe. Few if any of them have 
really persisted and spread, but it has seemed well to include them, 
as they are all represented by identifiable specimens, and as many of 
them have already been published in Dame & Collins’s Middlesex 
Flora. The specimens have been carefully compared with authentic 
material in the Gray Herbarium. 
Our knowledge of these interesting plants is due chiefly to those 
earnest collectors, Dr. Charles W. Swan, Charles E. Perkins, Rev. 
W. P. Alcott, Miss Emily F. Fletcher and Mrs. C. N. 5. Horner. 
Mr. Alcott’s collections are poorly represented in the Club Herba- 
rium, so, if any reader knows where the main Alcott herbarium is 
kept, he will do a service by notifying the committee. 
