Brackish-Water Algae from Hawaii— Abbott 
pare favorably with those in U. C. Herb., 
and one in herbarium of Bishop Museum. 
Hawaiian specimens examined: Tilden 558 
(Bishop); Reed 111, 198, 312, 452, 487, 
515 (U.C.). 
Found in Kuapa Pond at various stations, 
Kihalaeo Pond, Kupeke, Keawanui, Niau- 
pala, Ilae, and Molii. 
Reported from the Hawaiian group by 
Lemmermann (1905), Reed (1907), Rock 
(1913), and MacCaughey (1918). 
Enteromorpha intestinalis (Linn.) Link, 
Epistola, p. 5, 1820. 
Plants to 20 cm. in height, much branched, 
the branches whorled, alternate, or opposite. 
Cells angular in surface view. Some of the 
specimens from the ponds are in agreement 
with Setchell Hawaiian Algae 16, deter¬ 
mined by Collins (U.C.). 
In all the major ponds. 
Reported from the Hawaiian Islands by 
Reed, Setchell (1905), Rock, and Mac¬ 
Caughey. 
Ulva Linnaeus, 1753:1163 
Ulva Lactuca Linn., Sp. Plantarum 2: 1163, 
1753. 
Plants to 15 cm. in height, expanded, with 
scalloped margins, attached to rocks, twigs, 
wood, and other algae. Plants are usually 
light green in color. Base with many rhi- 
zoids. 
In all the major ponds. 
Reported from the Hawaiian Islands by 
Lemmermann, Reed, Rock, and Mac¬ 
Caughey. Abundant in marine habitats. 
Ulva jasciata Delile, Flore d’Egypte, p. 153, 
1813 (see Fig. 2). 
Dark green plants to 20 cm. in height, 
cleft and digitate, attached to rocks, forming 
large patches. Plants not as membranous as 
U. Lactuca. Rhizoids are few. 
197 
Collected in Kihaloko, Keawanui, Uala- 
pue, Niaupala, all on Molokai Island. 
Reported by Setchell, Reed, Tilden 
(1901^), Reinbold (1907), Rock, and Neal 
(1930). 
Fig. 2. Ulva jasciata Delile. Habit of a plant 
from Keawanui Pond. */4 natural size. 
Chaetomorpha Kiitzing, 1845: 203 
Chaetomorpha aerea (Dillwyn) Kiitzing, 
Sp. Alg., 379, 1849. 
Tufts of unbranched filaments to 4 mm. 
in height. Cells inflated, to 120 ^ in width, 
the walls thickened and stratified. 
Molii on Batts maritima, Kupeke on a 
bivalve, Keawanui on pond wall. 
Chaetomorpha antennma has been re¬ 
ported by Reed, and I have examined her 
collections of this species. None are of the 
Ch. aerea type. Others reporting other spe¬ 
cies of Chaetomorpha from Hawaii are 
Chamberlain (I860), Reinbold, Lemmer¬ 
mann, and MacCaughey. Setchell, Mac¬ 
Caughey, and Rock also report Ch. antennma. 
Rhizoclonium Kiitzing, 1843: 261 
Rhizoclonium sp. 
Only one undeveloped specimen, whose 
determination to species is not possible. 
Ualapue Pond, entangled on Polysiphonia. 
Newly reported here for the islands. 
