Aigae of New Zealand— -LlNDAUER 
341 
to distinct© praedita, sectionibns longitudinal- 
ibus 1-3, sectionibus transversis saepe nullis, 
interdum singulis, numquam pluribus; capillis 
nullis; sporangii.s uoilocularibus 39-45 m longis, 
21-24 fx latis, numerosis, ovatis, saepius ternis 
vel quaternis in ramulis sympodialibus qui in 
seriebus irregularibus secundatis vel alternatis 
per maiorem partem thalli gignuntur; sporangia 
piu.tilocula.tia non visa; props gula non visa. 
Fronds small, tufted, epiphytic, 4-5 mm. 
high, arising from closely packed penetrating 
filaments, main axes of thalli percurrent, 30-42 
/x wide with but few descending rhizoids, axis 
soon giving off somewhat sparingly, long, 
simple or sparsely branched pinnae 15-24 /x 
Fig. L Species of Sphacelaria and Ectocarpus. 
a—c, Sphacelaria stewartensis sp. nov. : a, in position 
on host (X 1.5) ; h, habit sketch ( X 5 ) ; c, unilocular 
sporangial sympodium (X 330). d-i, Edo carpus 
bracchiolus : d, in position on host (X 1 ) ) ; e, habit 
sketch (X 15);/, creeping basal filaments on host; g, 
erect filament with plurilocular sporangium (X 166); 
h, initial of plurilocular sporangium (X 330); i, 
mature plurilocular sporangium (lateral) (X 330). 
wide similar to the main axis, tips obtuse but 
never conspicuous, sometimes somewhat at- 
tenuated; articulations usually longer than wide, 
the upper of each pair of cells larger than the 
lower and provided with a distinct pericyst, 
longitudinal divisions 1-3, transverse divisions 
usually wanting or one at the most; hairs lack- 
ing; unilocular sporangia 39-45 ft long, 21-24 /x 
wide, plentiful, oval, generally in threes or fours 
on sympodial branchlets which appear in ir- 
regular secund or alternate series over most of 
the thallus; plurilocular sporangia not seen; 
propagula not seen. 
The plant is epiphytic on the upper segments 
of Xiphophora chondrophylla, forming small, 
isolated tufts, which, when removed, leave small 
cavities in the surface of the host. The branches 
are long and straggly, the lowest generally long- 
est. 
This species is closest to S. reinkei Sauv., of 
Tasmania, which plant is epiphytic on Cys- 
tophora; but dimensions of the new species are 
smaller, its branching is pinnate and not appear- 
ing dichotomous; it has no hairs, no felted basal 
portion, and the number of transverse divisions 
of the articulations is fewer. 
It also resembles S. sympodicarpa Sauv., of 
Europe, but is larger and has no creeping fila- 
ments; S. chorizocarpa Sauv., of Australia, but 
is lacking in hairs and plurilocular sporangia; 
S. borneti Reinke, but again has no plurilocular 
sporangia. Sauvageau, however, considers S. bor- 
neti to be identical with S. reinkei Sauv. 
Distribution: Epiphytic on Xiphophora chon- 
drophylla at Twilight Bay, Pegasus, Stewart 
Island, the type locality; most abundant in 
March. 
Type specimen, No. 9955, Herbarium Lin- 
dauer; iso-types distributed in Lindauer (1948), 
Algae Nova-Zelandicae Exsiccatae, Fasc. XIII, 
No. 311. 
Spatoglossum chapmanii sp. nov. 
Fig. 2 a-f. 
Fronde erecta, complanata, ecostata, subpal- 
mata, dichotoma, baud concentrice striata, ad 
80 cm. alta, membranosa vel cortacea, subglauca 
