Scr. M b l a n o s p e em e /e . Fam. SporocJmoideee.
P late L V I.
SPOROCHNUS PEDUNCULATUS, Ag-
Gen. C h a e . Frond filifo rm , s o lid , c e llu la r , t h e a x is m o r e d e n s e . F n c ti-
fication; la te r a l , c r e s te d , s ta llc e d receTJ/ac&i c om p o s e d o f h o r iz o n ta l,
b r a n c h in g f ilam e n ts w h o r le d r o u n d a c e n t r a l a x is , a n d p r o d u c in g
o b o v a te spores. Crest d e c id u o u s , c o n s is tin g o f b y s s o id , jo i n t e d fib re s .
— S e o e o o h n u s [Ag), a-mpos, a seed, a n d -gyooi, wool-, b e c a u s e tu f t s o f
fib re s a c c om p a n y t h e fru c tif ic a tio n .
S po eo o h n u s pedunculatus; stem undivided; branches lateral, long, sunple,
?ysi. p. 259, Grev.
Ilarv. in Mack. FI.
Ilarv. Man. p. 27.
horizontal; receptacles elliptical.
S po eo ch n t is p e d u n c u la tu s , Ag. Sp. Alg. vol. 1. p . 1 4 9 .
Alg. Brit. p. 41. t. vi. Hook. Br. FI. vol. ii. p. 274.
Hib. part 3. p. 173. Wyatt, Alg. Banm. no. 104.
Fndl. 3rd Suppl. p. 28. Katz. Fhyc. Gen. p. 342.
G ig a e t in a p e d u n c u la ta , Lam. Fss. p . 4 8 .
F u cu s pedunculatus, Huds. FI. Ang. p. 587. With. vol. iv. p. 120. Stack.
Ner. Brit. p. 110. t. 16. F .B o t. t. 545. Turn. Syn. vol. ii. p. 367.
Turn. Hist. 1 .188.
H ab. On submarine rooks, shells, &c., near low water mark, and at a greater
depth; rare. Annual. Summer and Autumn. Eastern and southern
coasts of England. Anglesea, Rev. IT. Davies. Preston Pans, Frith
oiD m X \,M r.IIa se ll. Bantry Bay, dfiss7AiA/ims. Killiney, W .R .E .
Belfast Bay, Mr. W. Thompson. Malahide, and Eoundstone Bay,
Mr. Me’ Calla. Jersey,lAi« White.
G e o g k . D i s t k . Atlantic shores of France. British Islands.
D e s c e . Boot a small disc. Stem 6-18 inches long, as thick as hog’s bristle,
cylindrical, smooth, perfectly simple, furnished throughout its length with
numerous lateral branches, at distances of from one to four lines asunder.
Branches three to six inches long, half the diameter of the stem, gradually
tapering to a fine point, quite simple, like the stem, the whole margined
throughout with receptacles. The receptacles are at fii’st sessile and wartlike,
gradually they become stalked, the stalk varying, at difterent ages,
and in different specimens, from a quarter of a line to nearly two lines
in length. They are of an obloug-elliptical, or, finally, spindle form, and
are crowned with a pencil of delicate byssoid, simple, jointed fibres a
quarter of an inch in length, and finally deciduous. Then- structure consists
in a slender cellular axis, round which dichotomous, jointed, horizontal
filaments ai’e whorled. To these filaments the narrow obovate spores
are attached. Substance cartilaginous, tender, becoming more rigid in the
stem. The structure is celluhu-, the cells of the centre and those near the
surface being miuute; the intermediate ones large, lax, and polygonal.
Colour when fresh, a clear olive, drying to a yellow green, and becoming
brown in age. When young the plant adheres closely to paper in drying.
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