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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this Uttle planthas the cehular structure and the fructification of Amansia, agenus which includes several subtypes, if all the plants now re-ferred to it be suffered to remain. T have not seen any specimensof Sonders Deiesseria Amansioides, which I doubtfully refer,from his description, to our plant. Externally our plants seemto agree, but Sonder describes the cellular structure to consistof a single layer of empt^ hexagonal cells, covered by a layer ofsuperficial cellules. In my plant the lamina consists wholly ofhexagonal cells, which are filled with granular, bright-red endo-chrome, liable, however, in the dried state, to be dissipated, whenthey may sometimes appear empty. I find no trace of corticalcellules ; the midrib alone is polysiphonous. Fig. 1. Amansia linearis,—the natural size. 2. A sporophyll or fruit-leaf-let, bearing a ceramidium. 3. Spores from the ceramidium. 4. A sporophyll,bearing tetraspores. 5. A tetraspore:—the latter figures variously magnified. Flcuz. CLl
Text Appearing After Image:
Ser. Rhodosperme^. Fam. Cryptonemiacea. Plate CIX. NEMASTOMA? COMOSA, Haw. Gen. Chaii. Frond compressed or flattened, between fleshy and gelatinous,dicliotomous or subpiunate, composed of two strata; the medullarystratum formed of longitudinal, interwoven, subsimple filaments, theperipheric of excurrent, dichotomo-fastigiate, articulate filaments, moni-liform toward the apices, and lying in lax or firm gelatine. Fructifi-cation : 1, favella immersed below the cortical filaments, containingwithin a gelatinous periderm numerous roundish spores; 2, cruciatetetraspores dispersed among the cortical filaments.—Nemastoma^ (/.Ag.), from vqixa, a thread, and perhaps Larrifjii, in its senes of tostrengthen or standfast ? Frons compresso-plana, gelatinoso-carnosa, dicJiotoma v. vage pinnata, duplicistrato constituta ; strata viedullari fills longltudhudihus simpUciuscuHs inter-textis,perlphericofills excurrenti-vertlcallbus dlcJiotomo-fastIgiatls artlculatlsapicem versus monlllformihm, muco la

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