Algae of New Zealand — LlNDAUER 
349 
segments similar to the main axis, proliferations 
sometimes becoming marginal on the upper, 
flattened portion of the stipe. 
The plant somewhat resembles Sarcophycus 
potatorum, differing from it mainly in the pres- 
ence of secondary branches, produced often in 
Fig. 6. Durvillea willana sp. nov. : habit sketch 
( X 0.08) . 
large numbers, sometimes 40 or more, from the 
main stipe. It differs from Durvillea antarctica, 
not only in its proliferated stipe, but in the 
absence of an internal layer of large, empty, 
colorless, columnar, polygonal chambers, which 
make the blade cushion-like to the feel, agreeing 
in that respect with D. harveyi of the Cape Horn 
region and Sarcophycus potatorum of Tasmania 
and Australia. 
At low water, instead of sprawling on or 
hanging from the rocks, as is the habit of D. 
antarctica, the stipe of the new species stands 
erect with the blade drooping from its extremity. 
Hence the two species may readily be distin- 
guished at a distance. 
Distribution: Generally fringing rocks over a 
clean, sandy bottom in comparatively shallow 
water; missing where clean sand is absent; often 
growing with D. antarctica in suitable situations, 
but generally on the seaward side of it on a 
gently shelving bottom, and never with it over 
deep water. Common at Taylors Mistake 
(Christchurch), Timaru, and south to Stewart 
Island; N. W. Nelson Province. 
Named in honor of Mrs. Eileen Willa of 
Half Moon Bay, Stewart Island, whose tireless 
enthusiasm and intensive collecting have greatly 
assisted the author in his work. 
Carpophyllum plumosum var. quercifolium 
var. nov. 
Fig. Id^e. 
Frondibus erectis, ad 90 cm. altis, distichis; 
rachidibus complanatis, sinuosis, ramulis mar- 
ginaliter et sat distanter etrudentibus, habitum 
speciei retinentibus; laminis basalibus querci- 
formis, 5 cm. longis, cacuminibus obtusis, lobis 
obtusis; laminis medialibus arctioribus, lobis 
ornatis, acutis; laminis terminalibus simplicibus, 
parvis, infra attenuatis; vesiculis parvis, ellipsoi- 
dis, pedicellularibus; receptaculis paniculatis. 
Frond erect, up to 90 cm. high, distichous, 
complanate, sinuous, the branches emerging 
marginally and somewhat distantly, in general 
habit resembling the original species; basal 
"leaves” oak-shaped, 5 cm. long with obtuse tips 
and blunt lobes; medial narrower, lobed, acute; 
terminal simple, small, attenuate below; vesicles 
small, ellipsoidal, pedicelled; receptacles pani- 
cled. 
Distribution: In the sublittoral fringe at Chat- 
ham Islands, the type locality. 
Type specimen No. 2480, Herbarium Lin- 
dauer. 
