232 Rhodora [OCTOBER 
* MYRIOPHYLLUM ALTERNIFLORUM DC. Shallow water of Tyler’s 
Pond, Goshen. (Bissell & Weatherby). 
M. spicatum L. In slow water of the Housatonic River at Oxford 
and Huntington (Harger). Only sterile material found but appar- 
ently well distinguished by the foliar characters. 
(To be continued.) 
. ANDREWS, 
TWO NEW POLYGONUMS FROM NEW ENGLAND. 
S. F. BLAKE. 
As the publication of a revision of the North American members 
of the Polygonum aviculare group on which the writer has been en- 
gaged for some time has been unavoidably postponed, it has seemed 
advisable to publish at this date descriptions of the two following 
new species from New England. Of these one is most nearly related 
to P. erectum L., and, as seems to be the case with that species, has 
not yet been found in a clearly indigenous condition. The other, 
somewhat related to P. Fowleri Robinson and P. aviculare L., but very 
distinct from either, is known from a number of collections along the 
coast of Maine and New Brunswick. 
PoLyGonuM achoreum, sp. nov. Annuum ramosum adscendens 
coeruleo-viride caulibus (1)1.5-3.5 dm. longis. Caulis validus stri- 
atus supra compresso-angulatus albido-viridis glaber, internodiis cau- 
linis 1-1.5 (rare 2) cm. longis, eis ramealibus 4-8 mm. longis. Folia 
creberrima elliptica apice latissime rotundata basi in petiolum bre- 
vissimum (0.6-1.5 mm. longum) cuneate angustata coeruleo-viridia 
firma inconspicue venosa (venis ca. 5-jugis) 7.5-22.5 mm. longa 
4-10 mm. lata internodia superantia, ea ramulina minora ceterum 
similia valde conferta. Ocreae nitenti-scariosae albidae mox lace- 
ratae (laciniis ca. 6-8) scarioso(vix fibrilloso)-persistentes conspicuae 
