648 
IX. ALGiE. 
[Sargassum. 
4. S. adenophyllum, Harv. in FI. N. Z. ii. 212. Frond 1-2 feet long. 
Stem 1-2 in., dividing into many slender very long compressed smooth 
flexuous branches, ^ in. diameter. Leaves alternate, distichous, long- 
petioled, dichotomously multifid, lower broader membranous ribbed, upper 
filiform, with several large prominent glands. Bladders on slender stalks, 
spherical, shortly mucronate. Receptacles unknown. 
Shores of New Zealand, Lyall. (Australia.) 
5. S. scabri&um. Hook. f. and Harv. FI. N. Z. ii. 211. Stems 
angled, muricate. Leaves oblong-lanceolate, acuminate, toothed, upper very 
narrow. Bladders scattered, stalked, globose, smooth, not mucronate. Re- 
ceptacles racemed, stalked, lanceolate, smooth ; racemes axillary, shorter than 
the leaves. — J. Ag. Sp. Alg. i. 347. 
Bay of Islands, J. D. H. ; Houraki Gulf, Lyall. — Specimens imperfect. 
6. S. Sinclairii, Hook.f. and Harv. FI. N. Z. ii. 211. Stems semi- 
terete, angled below, compressed and filiform above. Leaves lanceolate, 
narrowed at the base, rib vanishing; lower larger, 3-4 in. long, incised and 
toothed ; upper toothed or subentire. Bladders few, shortly stalked, bearing 
a leaf. Receptacles very short, axillary, sparingly divided, subtended by a 
minute leaf; lobes smooth, turbinate, abruptly 3-4-horned. — J. Ag. Sp. Alg. 
i. 300. 
Common along the shores from the Bay of Islands to Port Cooper, Sinclair , etc. 
§ III. Eusargassum, J. Ag. — Stem flat or terete. Branches ascending (not lent 
down at their insertion). Leaves horizontal. 
7. S. bacciferum, Agardh ; — FI. N. Z. ii. 211. Stem much branched, 
filiform, smooth. Leaves linear-lanceolate, acutely often doubly-serrate, 
costate, slightly glandular or eglandular. Bladders spherical on a stalk of 
their own diameter, mucronate. Receptacles £ in- long, axillary, in forked 
racemes, cylindric, warted, unarmed. — J. Ag. Sp. Alg. i. 344. Fucus natans, 
Linn. ; Turn. Hist. t. 47. 
Shores of New Zealand, D’Urville , Lesson, Sinclair (all tropical and subtropical seas). 
—This is the Sargasso-weed (or Gulf-weed) of the Atlantic, which forms free floating 
patches in the ocean, and increases by accidental division of the frond. 
Various other species of Sargassum are enumerated as natives of New Zealand, hut none 
with any probability of being really so ; such are S. vulgare, Ag., a plant confined to the 
Atlantic; S. granuliferum, Ag., a native of the Indian Ocean; S. droserifotium, Bory, an 
imperfectly-described New Ireland species; S. crassifolium, J. Ag.. found in the ocean be- 
tween New Zealand and New Ireland ; and S. duplicatum, a most imperfectly-described 
plant found in the ocean between New Zealand and Tahiti. On the other hand, no doubt 
many Australian species are washed on the New Zealand coasts, and that the number of in- 
digenous and transported species tp be found will prove to be large. 
2. TURBXHARIA, Lamouroux. 
Root branching. Frond olive-brown, alternately decompound, with dis- 
tinct stem, leaves or bladders, and receptacles. Leaves confluent with the 
bladders, which are stalked, turbinate, crowned with a peltate lamina. Re- 
