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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
ecognized under every form; but one is broad andscarcely cleft; another narrow, and cut up into innumerableshreds; and others, like the one selected for our figure, are mo-derately lobed. This plant abounds in all parts of the western and southerncoast that I have visited. In Tasmania a variety occurs, inthe Tamar, a considerable way above Georgetown, and at firstlooks like a different species, being thinner, and more purpleand fan-shaped than the ordinary state. On tracing it down theriver to the Heads of Port Dairymple, it gradually blends intothe usual variety, nor is there any microscopic character to dis-tinguish it. Fig. 1. Halopleoma Preissit; part of a frond,—the natural size. 3. Someof the vertical, anastomosing, central filaments, and the horizontal, free,superficial ramuli; showing their connection. 3. Eamulus, with tetra-spores. 4. A tetraspore. 5. An involucrated cluster of favellse. 6. A fa-vella. 7. Spores:—the latter figures >«tfy»i/?ec?. l:^itili> -L-AxlA.
Text Appearing After Image:
■OOiiS, J-LILIC Ser. Rhodosperme^. Fam. Sjjharococcoidea. Plate LXXX. GRACILARIA DACTYLOIDES, Sond. Gen. Chae. Frond filiform, compressed, or flat, cartilaginous, irregularlybranched, composed of two strata; the medullary stratum of large,roundish, angular cells, smaller outwards, usually containing granules;the cortical of minute cellules, vertically seriated or in a single row.Fructification: 1, hemispherical or conoidal conceptacles, sessile onthe branches, containing within a thick pericarp obovate sjjores ar-ranged in spore-threads issuing from a basal placenta; 2, tetrasporescruciate or tripartite, dispersed among the surface-cellules of thebranches and ramuli.—Gracilaria (Grev.), hom gracilis, slender/applicable to the filiform species. Trans filifor mis, compressa, v. plana, carnoso-cartilaginea, vage ramosa, ex atratisdtiobus contexta. Stratum medullare cellulis magnis rotundato-angulatis,exterioribus senshii minoribus, materie granulosa scepe repletis; corticatecellulis

Note About Images