JX. ALG.33. 
651 
7. CYSTOPHORA, J. Agardh. 
Root scutate. Frond olive-brown or -green, dendroid, with a distinct 
stem, branches, and branchlets, the latter more or less leaf-like, or passing 
into leaves. Bladders (if present) simple. Receptacles pod-like, moniliform 
or torulose, forming part of the branchlets. Conceptacles containing pyri- 
form spores, and branched filaments bearing antheridia. 
A large tropical and southern genus. 
§ 1. Branches from the margin of the stem, lent suddenly down at their insertion. 
1. C. monilifera, J. Agardh. Stem flat, several feet long, decom- 
pound, pinnate, j in. broad ; pinnae inserted on the flat side of the stem, bent 
down at their insertion with very short truncate alternate branches at the base ; 
pinnules dichotomously pinnate, the ultimate transformed into moniliform 
filiform apiculate receptacles, |-1 in. long. Bladders stalked, globose, size of 
a pea, placed towards the bases of the primary pinnae. — J. Ag. Sp. Alg. i. 
241; Harv. Phyc. Austr. v. 245. Blossevillea, Decaisne. Cgstoseira retro- 
flexa, A. Richard. Fucus, Turn. Hist. Fuc. t. 155, not of Labillard. 
Shores of New Zealand, D’Urville. (Australia, Tasmania.) 
2. C. retroflexa, J. Agardh, Sp. Alg. i. 242 ; — FI. AT. Z. ii. 214. 
Very similar to the preceding, but more robust. Bladders obovoid. Recep- 
tacles ensiform, subtorulose — Fucus, Labill. FI. Nov. Holl. t. 260. Blosse- 
villea caudata, nob. in Lond. Journ. Bot. vi. t. 414. B. retroflexa, Kuetzing. 
Abundant on the shores as far south as Lord Auckland’s group. (Australia, 
Tasmania.) 
3. C. retorta, Agardh ; — FI. N. Z. ii. 214. Lower part of frond as 
in C. retroflexa, upper pinnae with a nearly terete rachis, subdichotomously 
branched ; axils rounded. Receptacles 2-3 in. long, terete, usually incurved, 
obscurely torulose. — J. Ag. Sp. Alg. i. 243. Blossevillea, Mont. 
Shores of New Zealand, Raoul. Lord Auckland’s group, Eombron. (Australia, Ag.) 
4. C. torulosa, Agardh ; — FI. N. Z. ii. 214. Stem compressed, 1 foot 
long, nearly simple, alternately pinnate ; pinnae bent down, pinnules subfas- 
cicled, passing into clavate torulose obtuse receptacles. Bladders elliptic- 
spherical. — J. Ag. Sp. Alg. 243 ; Harv. Phyc. Austr. t. 123. Blossevillea, 
Decaisne. Fucus, Turn. Plist. t. 157. 
Shores of New Zealand, D’ Urville. Banks’s Peninsula, Lyall. (Australia, Tasmania.) 
§ 2. Branches distich ously pinnate, not bent down. 
5. C. Platylobium, •/. Agardh, Sp. Alg. i. 245. — C. Lyallii, Harv. in 
FI. N. Z. ii. 214. t. 108. Stem 2-3 feet long, very stout, compressed, 
grooved, flexuous, 2-3-pinnate; pinnae from the margins of the frond, naked 
below, with alternate tubercles ; pinnules flat, 2-3 in. long, alternately 
toothed, barren with obtuse simple teeth, fertile with the teeth prolonged 
into stalked receptacles which are 1 in. long, ensiform, compressed, elliptic- 
lanceolate, long acuminate, torulose, with 2 rows of submarginal cavities. 
Bladders nearly globose, stalked, as large as hazel-nuts. 
Poveaux Straits, Lyall. Otago, Lindsay. (Tasmania.) 
2 u 2 
