Piate CZXTfP.
Ser. E h o d o s p e u m e ^ . Spmgiocarpem.
P l a t e CLXIII.
PHYLLOPHORA MEMBRANIFOLIA, /. Ag.
G e n . C h a r . Fronds stip ita te , rigid-membranac eous, proliferous, n e rv e less,
or w ith a v an ish in g ne rv e , c e llu la r ; cells m in u te , an g u la r,
g rad u a lly smaller towards th e surface. F r n c tiJ k a U o n 1 , tuhercles
[favelUdia) s c a tte re d over th e frond, co n ta in in g masses of m in u te
sp o re s ; 2, warts [nemathecia) sea ted on th e fro n d , composed of ra d ia
tin g , moniliform filaments, whose lower a rticu la tio n s a re a t len g th
c o n v erted in to sn o re s? 3, tetraspores (on d is tin c t plants) coUeoted
in to sori, e ith e r towards th e a pex of th e frond, or in p ro p e r leaflets.
P h y l l o p h o r a [O r e v .) ,— <l>JKkov, a Uaf, an d fiopse,, to bear.
P h y l l o p h o r a membranifolia-, stem cylindrical, filiform b r a n c h e d ; th e
b ran ch es e x p an d in g in to bro ad ly wedge-shaped, two-lobed or dich o to m
o u s s e gm e n ts ; tu b e rc le s oval, on sh o rt stalks a risin g from th e
stem or le a fle ts ; n em a th ec ia fo rm in g b ro ad patches m th e c en tie ot
th e leaflets.
P h y l l o p h o r a m e m b r a n i f o l i a , / . Ag. Alg. Medit. p . 93. Endl. 3rd Suppl.
p. 38.
R hodymenia membranifolia, H a n . in Phyc. Br. Syst. list, p. xii.
C h o n d r u s m em b ran ifo liu s, Orev. Alg. Brit, p 131. Hook. Br. El. vol. ii.
p. 303. H a n . in Mack. El. Hib. part 3. p. 303. Wyatt, Alg. Banm. no. 70.
Harv. Man. p. 78.
SPH.EROCOCOUS membranifolius, Ag. Syn. p. 26. I^ngb. Hyd. ®'
Ag. Sp. Alg. vol. i. p. 340. Ag. Syst. p^314 Hook El. &oi. part 2.
p. 103. Grev. El. Edin. p. 295. Spreng. Syst. Veg. vol. iv. p. 33o.
Pucu s membranifolius. Good, and Woodw. Lm Trans, vol. P-1,20^. 16. h i .
lam . Biss. t. 20, 31. f. 3. Turn. Syn. p. 35. Turn. Hist. t. 74. Sm. E. Bat.
1 .1965. Stack. Ner. Brit.
Ducus fimbriatus, Huds. M. Angl. p. 574-
I Ia b . On rocks and stones, between tide-marks. Perennial. Winter,
Very common on tbe British coasts.
G e o g r . D is t r . Atlantic sbores of Europe and North America.
D e s c r , Boot a spreading callus. Eronds densely tufted, from three to twelve
inches in height. Stem slender, as thick as small twine, rigid, cylindrical,
repeatedly branched in an irregularly dichotomous mannei; bianchcs
simple, k bifid, one, two, or more inches in length spreading,
<n-adually becoming compressed upwards, and expanding into a wedge-
shaped, or fan-shaped, more or less divided frondlet. ErondMs rigid-
mekbranous, repeatedly dichotomous, the axils and apices obtuse, he
latter sometimes bifid. In old specimens besides the terminal frondM.
the branches give off very numerous lateral ones of a smaller size, which
are sirp ly bild , and of a narrow wedge-shaped outline: the almndance ot
these sometimes makes the specimen very bushy. fastigiate. E u c ti-
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