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:
nt would pass for a weak-growing speci-men of Belesseria Hypoglossum, so common on the shores ofBritain, and of some coasts of Europe and North America; andwhich is also closely related to D. crassinervia of the Antarcticzone. But the microscope at once reveals characters in the mid-rib and in the cellular structure of the lamina, which are bothreadily seen and constant, and which therefore mark the species.The jointed three-tubed midrib is found in several other species,both Australian and American; but not in I), hypoglosmm, or anyof the European kinds. It was first observed in D. Leprieurii,where it is even more strongly marked than in the present. Our plant is closely related to D. spathulata, Sond., also aWest Australian species, and which differs much as B. ruscifoliadoes from D. Hypoglossum. Fig. 1. Delesseria hypoglossoides, the natural size. 2. Portion of a leaf,magnified; showing the distribution of the cells in the membrane, and thejointed midrib. pinh. lAXxvm. ^-^T^^^SiVX^
Text Appearing After Image:
■^-jieLtt Jr^TOote, ixap. Ser. Rhodosperme^. ram. Bhodomelacece. Plate LXXXVIII.DASYA HAPALATHRIX, Harv. Gen. Char. Frond filiform or compressed, dendroid; stem and brancliescoated with small,polygonal cells (rarely articulated, and many-tubed);the axis articulate, composed of several radiating cells surroundinga central cavity; ramelli articulated, one-tubed. Fructification : 1,ovate or urceolate ceramidia; 2, lanceolate sticJddia, attached to theramelli, and containing triangularly-parted tetraspores in transverserows,—Dasya (A(/.), from Saav^, hairy. Frons Jiliformis v. compressa, dendroidea. Caulis ramique majores strata cel-tularum corticati (raro pellucide artlcidati), ramelUs monosiplionm obsessi;axis articulatus, ex cellulis pluribus radiantlhus tuhum centralem cinyentihusformatiis. Fruct.: 1, ceramidia ovata v. urceolata; 2, stichidia lanceolata,ex ramellis enata, tetrasporas tran&versim ordinatas foventia. Dasya hapalathrix; stem very long (3-6 feet), percurrent, ina

Note About Images