78 Rhodora [APRIL 
retrorse prickles which occur upon the stems, leaves, and pedicels; 
and its mature carpels are 1.25-1.5 mm. in diameter. ‘The smooth 
plant appears to be a well marked halophytic variety, which is here 
proposed as 
GALIUM TRIFIDUM L., var. halophilum, n. var., omnino ut G. trifi- 
dum sed caulibus foliis pedicellisque glabris; carpellis maturis paulo 
majoribus (1.5-1.75 mm. diametro). 
Like the typical form of the species, but with stems, leaves, and 
pedicels glabrous; fruit slightly larger (the individual carpels 1.5- 
1.75 mm. in diameter).— QUEBEC: brackish marshes at mouth of 
Bonaventure River, August 2-4, 1904, Collins, Fernald, & Pease, 
(type specimen in Gray Herb.); borders of a salt marsh, Matane, Au- 
gust 6, 1904 (F. F. Forbes); brackish shore, Riviére du Loup, August 
31,1904 (Collins & Fernald); salt marsh, Bic, July 25, 26, 1907 (Fernald 
& Collins, no. 1181). NEwrovNDLAND: Barred Islands, August 20, 
1903, J. D. Sornborger. Prince Epwarp IstLAND: bog near Tra- 
cadie Beach, July 27, 1901, J. R. Churchill. New Brunswick: 
brackish marsh at mouth of Téte-A-Gauche River, Bathurst, July 
24, 1902, Williams & Fernald. Maine: North Lubec, September, 
1902, Kate Furbish; edge of salt marsh, South Lubec, July 26, 1909 
(Wiegand); pools and wet rocks by the sea, Cutler, July 2, 1902, 
Kennedy, Williams, Collins, & Fernald, August 19, 1902, Kate F urbish. 
Another plant related to Galium trifidum has been collected in 
Arbor Vitae swamps and on marly or calcareous shores of Gaspé 
County, Quebec, and Aroostook County, Maine. This plant, which 
had been placed tentatively with G. trifidum, var. subbiflorum Wiegand, 
is densely matted, and has the tiny fruits on glabrous pedicels which 
are only 0.5-4 mm. long, and the mature carpels 0.8-1 mm. in diam- 
eter. From typical G. trifidum it differs in its short internodes, 
short glabrous pedicels, and smaller fruit; the fully developed retrorse- 
scabrous pedicels of G. trifidum being 0.8-2 cm. long, and the ripe 
carpels 1.25-1.5 mm. in diameter. From G. trifidum, var. subbiflorum, 
which has glabrous pedicels, it is readily distinguished by its very 
short pedicels and small fruit; from var. halophilum by its slightly 
scabrous stems, very short pedicels, and tiny fruit; and from G. 
Brandegei Gray, of the southern Rocky Mountains, by its more sca- 
brous stems and leaves, shorter pedicels, and smaller fruit, the mature 
carpels of G. Brandegei being 1.7-2 mm. in diameter. So far as the 
writers are able to find, the small-fruited plant of Quebec and Maine 
has not been described, and it may appropriately be called 
GaLIUM brevipes, n. sp. humile valde implicatum, caulibus 
