Phycologia australica; or, A history of Australian sea weeds ..and a synopsis of all known Australian Algae .. . ies now described; and this has so much of the externalaspect of a Chcetangmm, of the section Nothoyenia, that the pro-priety of keeping it separate may be questioned. The charactersby which Acrotylm differs from Chcetangium are found in themore or less developed intermediate stratum of roundish an-gular cells {yonidia), and in the tetrasporic sori of the presentgenus. In Chcstanyium the tetraspores are dispersed, and thefrond composed wholly of filaments. My first specimens of Acro
Phycologia australica; or, A history of Australian sea weeds ..and a synopsis of all known Australian Algae .. . ies now described; and this has so much of the externalaspect of a Chcetangmm, of the section Nothoyenia, that the pro-priety of keeping it separate may be questioned. The charactersby which Acrotylm differs from Chcetangium are found in themore or less developed intermediate stratum of roundish an-gular cells {yonidia), and in the tetrasporic sori of the presentgenus. In Chcstanyium the tetraspores are dispersed, and thefrond composed wholly of filaments. My first specimens of Acrotylus australis were given me byDr. Curdie, of Geelong, and not then recognizing them as theplant previously described by Agardh, I named them Curdiea *in his collection. I have since selected another Curdiea (PlateXXXIX.) which I hope may prove a more permanent memento. Fig. 1. AcKOTYLUS AUSTRALIS,—the natural size. 2. Portion of a branch,with conceptacles,—slightly magnified. 3. Section through the frond and aconceptacle. 4. Section through a sorus; and 5, a telraspore:—variouslymagnified. 1 LLUL C^. x5Tcajii,-a^^ Ser. Rhodospbrmej;. Fam. Rhodotnelacece. Plate C. CLIFTONIA PECTINATA, Haw. Gen. Char. Frond stipitate, formed of secundly proliferous, halved, pec-tinate pliyllodia. PJiyllodia costate, with diverse sides; one side flat,areolate, membranous, very entire; the other pectinato-partite, thelaciniae articulated, polysiphonous. Fructification unknown.—Clif-TONiA [Harv.*), in honour of George Clifton, Esq., E. N., the inde-fatigable and successful explorer of the Algse of Western Australia. Tronsstipitata, expJiyllodlis seciindeproliferis hemiphyllis hincpectmatis costata, laterlbus diversis; uno latere piano areolato memhranaceointegerrimo, alterapectinato-partito, laciniisarticulatispleiosiphoniis. Fructusignotus. ChiTTOHiA pectinata; phyllodia pectinate, their lacinise filiform-subulate,acute, many times longer than the breadth of t
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Keywords: ., bookauthorharveywi, bookcentury1800, bookdecade1850, bookyear1859
