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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I ought torefer it to Arescliougia, or perhaps found a new genus upon it.In its characters it comprises, very nearly, the genera Jreschou-gia and Ergthroclonmm, but does not quite agree with either;but on the whole—looking to the development of its stem andprimary branches—appears better associated with the former.Here therefore I place it, though to admit it 1 have been ob-liged to alter the generic character. To complete its history it would be desirable to find it in ayoung state and growing. We are still ignorant of the form ofthe immature ramuli, or whether, at any period, it bears flat,foiiaceous appendages. Fig. 1. Areschougia sedoides,— the natural size. 2. A cross section ofthe stem. 3. Some ramuli, m situ, containing conceptacles. 4. Segmentof a cross section of a conceptacle-bearing ramulus. 5. Spore from thesame. 6. Eamuli, bearing tetraspores. 7. Segment of a cross section ofone of them. 8. Tetraspores from the same:—the latter figures variouslymagnified. Pbucivm
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Ser. Khodosperme^. Fam. Modymeniacea. Plate CXVIII. HYMENOCLADIA USNEA, /. A^. Gen. Char. Frond softly membranaceous, flat, linear, distichous, decom-poundly pinnated, composed of three strata of cells; the medullarystratum of large, roundish, inflated cells j the intermediate of smaller,angular cells; the cortical of minute, coloured cellules, arranged invertical, moniliform series. Fructification: 1, conceptacles globose,sessile, with a thick, cellular pericarp, at length opening by an apicalpore; spore-threads moniliform, attached to a basal placenta; thespores elliptic or oblong; 2, dispersed, tripartite tetraspores.—Hyme-NOCLADIA (/. Ag^, from vijl7)v, a membrane, and KKaho<i, a branch. Frons gelatmoso-membranacea, plano-compressa, linearis, disticJie decomposito-pinnata, strath tribus contexta ; ynedullari ex cellulis inagnis vcsicatis, inter-media ex cellulis minoribiis rotiindato-angtdatis pluriseriatis, corticali ex cel-lulis minutissimis coloratis infila brevissima woni

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