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P l a t e L X X X V .
RYTIPHLÆA PINASTROIDES, {Ag)
G e n . C h a k . Frond, filiform or compressed, pinnate, transversely striate,
reticulated; the axis articulated, composed of a circle of large, tubular,
elongated cells {siphons) surrounding a central cell; the periphery of
several rows of minute, irregular, coloured cellules. Fructification of
two kinds, on distinct individuals; 1, ovate capsules {ceramidia) containing
a tuft of pear-shaped spores; 2, tetraspores, contained in
minute lanceolate receptacles {stichidia), in a double row. E y tip h L jE A
{A g)—^from paris, a wrinkle, and <j>Xoibs, the ia rk ; because the surface
is transversely wrinkled or striate.
E y t i p h l æ a pinastroides ; frond terete, irregularly branched ; lesser branches
jectinato-pinnate ; the pinnæ secund, with their apices more or less
looked inwards.
E y t ip h læ a p in a s tro id e s , f y y . /%». p . 2 5 . J. Ag. Alg. Medit. ]).145. Endl.
3 r d Suppl. p . 4 8 .
E h o d om e l a p in a s tro id e s , Ag. Sp. Alg. 1. p . 3 8 1 . Ag. Syst. p . 2 0 0 . Spreng
Syst. Veg. 4 . p . 3 4 3 . Greo. Alg. Brit. p . 1 0 4 . t . 1 3 . Hook. Br. El.
v ol. ii. p . 2 9 4 . Wyatt, Alg. Banm. n o . 1 1 2 . Haro. Man. p . 6 8 .
H a l o p it h y s pinastroides, Kütz. Phyc. Gen. p. 433. t. 52. f. 2.
G ig .y b t in a p in a s tro id e s , lyngh. Hyd. Ban. p . 4 5 .
C e r a m iu m incm-vum, Bee. El. Eran. vol. ü . p . 3 3 .
F u cu s pinastroides, Gm. Hist. Eue. p. 127. t. 11. f. 1. Good, and Woodw.
in Innn. Trans, vol. Hi. p. 222. Turn. Syn. vol. Ü. p. 346. Turn. Hist, t, 11.
Stack. Ner. Brit. p. 74. 13. Eng. Bot. t. 1042.
F u cu s incurvus, Huds. El. Ang. p. 590. With. vol. iv. p. 115.
H a b . On sub-marine rooks, near low-water mark. Perennial. Winter.
On the shores of the south of England, in several places. Jersey,
Miss White, and Miss Turner.
G b o g b . D is t k . Atlantic shores o f France and Spain, Mediterranean Sea.
“ Foeroe Islands,” Lynghye (very doubtful). New Zealand, Sir J. Banks.
Ceylon, Sir J. E. Smith.
D e s c b . Boot an expanded, disc. Eronds tufted, 4 -10 inches in height, cylindrical,
about as thick as wbip-cord below, much and irregularly branched and
bushy, somewhat fastigiate ; the main brancbes alternate or subdichotomous,
densely clothed in their lower part with short, subulate, simple, erecto-patent
ramuli, wbicb occasionally give a shaggy character to the bases of old fronds ;
and in their upper, set witb elongate, patent or recmwed, pectinato-pinnate
brancbes, whose apices are, especially-in young fronds, very generally rolled
inwards or hooked. These lesser brancbes are pectinate along their upper side
with a double set of subulate ramuli, secundly disposed, generally in pairs, at
short intervals, but occasionally somewhat irregularly inserted; aU very
erect, with straight or hooked apices, and somewhat narrowed at the base.