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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though I had myself gathered some hundreds of speciiuens,on none did I find ci/stocarpic fruit in a mature condition. Forfine specimens, in full fructification of both kinds, I have^nowto thank Mr. Rawlinson of Melbourne, to whom (through Dr.Mueller) I am also indebted for a suite of well-dried Alg8e,^col-lected at Port Phillip Heads. The structure of the nucleus in this species and in H. divari-caia (Plate XX.), necessitates the placing of the genus Hymeno-cladia among the Wiodymeniacece instead of the LaurenciacecB,Avhere Agardh refers it. Our Plate has been struck in rather too dark an ink, and ismore highly coloured than ordinary specimens; but when quitefresh, before exposure to the sun or immersion in fresh-water, itis of the deep red here represented. Pig. 1. HymenOCLADIA Usnea,—the natural size. 2. Section of a concep-tacle. 3. Spores from the same. 4. Cross section of the frond, with im-bedded tetraspores. 5. A tetraspore:—the latter figures variously mag-nified. Flau CIR
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NSnctnt BTooks, Im,v Ser. Melaxosperme.E. Fam. Dictyotacea. Plate CXIX.DICTYOTA RADICANS, Harv. Gen. Char. Root woolly. Frond flat, linear, membranous, ribless, areo-late, dichotomous or irregularly cleft. Fnictification: spores super-ficial, either collected in spot-like sori or scattered singly over bothsurfaces of the frond.—Dictyota (Lamour.), from Scktuov, a net;because the surface, under a lens, has a netted or, rather, a tessellatedappearance. Radix stuposa. Fronsplana, linearis, membranacea, ecostata, areolata, dicliotomaaut vagejiasa. Fruct.: spores superficiales, in soros maculceformes aggregataV. singulatiin per utramque paginam frondis dispersce. Dictyota radlcans ; frond not woolly at base, stipitate, rooting by scat-tered thread-like fibres issuing from the stipes and lamina, dichotomo-pinnatifid; segments cuneate, the lateral erect, with narrow sinuses;apices very obtuse; sori scattered, confined to the middle part of thefrond. D. YSLdicans ■,froude estuposa stipita

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