Identifier: phycologiaaustra02harv (find matches)
Title: Phycologia australica; or, A history of Australian sea weeds ... and a synopsis of all known Australian Algae ..
Year: 1859 (1850s)
Authors: Harvey, William H. (William Henry), 1811-1866
Subjects: Algae
Publisher: London, L. Reeve
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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,and is glossy. With tlie semi-gelatinous substance, colour, and habit of aHalymenia, the genus here illustrated differs both in anatomicalstructure and in fruit; and all the four species now known agreein the curiously horned or crowned conceptacles. The presentspecies is extremely variable in the breadth and ramification ofthe secondary laciniae, and several varieties might be enumerated,all connected however by intermediate forms, varying from thebroad and simple to the nearly filiform, much branched, and en-tangled. Sometimes indeed the frond is resolved into an inex-tricable mat of slender branches, which everywhere stick toge-ther by discs, and actually grow one into the other. Horea s^eciosa and II. pohjcarpa, being figured in the Ploraof Tasmania, will not be repeated in the present work. Fig. 1. Horea halymenioides,—tlie natural size. 3. Part of a fertile frond,—someiohat magnified. 3. Section through a pericarp and portion of thefrond,—more highly magnified. PUUfllElJl
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Ser. Rhodosperme^. Fam. CryptonemiacecB. Plate LXVIIL GIGARTINA PINNATA, a^. Gen. Char. Frond carnoso-cartilaginous, flat or cylindrical, simple orvariously branched, composed of two strata of cells; the medullarystratum, of cylindrical, articulated filaments, anastomosing into avery lax network; the cortical, of moniliform, vertical, dichotomousfilaments set in firm gelatine. Fructification: 1, external, globose,finally perforate conceptacles, containing within a s,2iCC?itG, placenta (?)formed of closely interwoven filaments, a compound micleus consist-ing of many confluent nucleoli, or masses of roundish-angular spores;2, cruciate tetmspores, collected into dense, subprominent sori,lodged bene?itli the superficial cells.—Gigartina (Lamour^, fromr^L^apTov, a grape-stone, which the conceptacles resemble. Frons carnoso-cartdaginea, plana v. cyUndracea, ramosa, ex stratis duohuscellidarum composita; stratum medullare ex fills temdbus cyUndraceis laxeanastomosantlbus^ corticale ex fill

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