Phycologia australica; or, A history of Australian sea weeds ..and a synopsis of all known Australian Algae .. . ked one, differing not only from all statesof S. comosus, but from every other species of Sjporochnus, in thecomplete absence oipedicel to the receptacle. On this characteralone therefore I venture to propose the species; other diffe-rences of habit will be seen when we figure S. comosus. S. ajpodiis is further interesting as being the link that connectsSporochnus with Nereia; and reduces the difference betweenthese genera to the degree of evolution of the axis round whichthe spore-
Phycologia australica; or, A history of Australian sea weeds ..and a synopsis of all known Australian Algae .. . ked one, differing not only from all statesof S. comosus, but from every other species of Sjporochnus, in thecomplete absence oipedicel to the receptacle. On this characteralone therefore I venture to propose the species; other diffe-rences of habit will be seen when we figure S. comosus. S. ajpodiis is further interesting as being the link that connectsSporochnus with Nereia; and reduces the difference betweenthese genera to the degree of evolution of the axis round whichthe spore-threads are whorled. In Nereia the axis is punctiformor discoid, and the result is a conical or hemispherical recep-tacle ; in Sporochnus it is filiform, and the result an oblong orcylindrical receptacle. These two genera of Algae therefore havea similar analogy with each other, as have the proteaceous generaDrymidra and Banksia. Fig. 1. Sporochnus apodus,—the natural size. 2. Part of a branch, with re-ceptacles. 3. Spore-threads from the receptacle :—the latter figures vari-ously magnified. FlaJio JCEL. YmcerxErocjcs r; Ser. E,HODOSPERMEiE. Fam. CnjptonemiaceoR. Plate XCIII. GATTYA PINNELLA, Harv. Gen. Char. Frond distichous, pinnatifid, hollow, tubular, with a mem-branous periphery, and an articulated, monosiphonous axile fila-ment. Axile filament articulate, callithamnioid, emitting at each jointwhorled, dichotomous ramelH, whose tips, cohering together, formthe membraDous periphery of the frond. Fruit unknown.—Namedin honour of Mrs. Gatty, of Ecclesfield, Yorkshire, a diligent ex-plorer of British Algae and marine animals, and author of A Horn-book of Phycology,^ etc. etc. , irom disticha, jnntiatifida, tuhulosa (cava), peripherio rnembranaceo axique mo-yiosiplionio artlculato coniposita. Filuiii centrale articidatum, callithamnio-ideuni, ad genicula rmnellos vertlclllatos dichotomos emittens, quorum apicil/usarete coh(srentihm periphnrium memhranacemu frondis condruc
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Keywords: ., bookauthorharveywi, bookcentury1800, bookdecade1850, bookyear1859
