Rhodospermeae, or Red Sea-Weeds, Part II

Rhodospermeae, or Red Sea-Weeds, Part II

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1871 edition. Excerpt: ...roundish, with a wide border. Colour of the tufts, brownish-red. Substance rigid and harsh to the touch when recent; soon becoming flaccid. lt adheres, but not very strongly, to paper in drying. The species of the genus Ceramium, unless, with early writers, we reduce the multiplied forms presented to the eye to three or four types, are not only very numerous, and very widely dispersed, but are so closely connected together by doubtful looking varieties, that their study and disentanglement becomes a task of much difficulty. Until of late years British authors have been contented to recognise but three, C. rufirum, C. aliap/zanum and C. ciliatum; to which, in the ' Manual, ' I ventured to add two others. But now, since Kiitzing has published, though with less perfect materials to work upon than exist in British Herbaria, no less than forty-two which he divides into six genera (1); the attention of British botanists has been aroused, and many new Ceramia added to our list. Among these is the subject of the present plate, which having been published in two collections of dried specimens, is pretty generally known to British botanists, though perhaps not-under the name here given. I believe it was first detected by Mrs. Griffiths, from whom I received specimens several years ago, and by her has always been regarded as a well marked species, ' distinguished from those most nearly allied to it, by a certain harshness to the touch, or rigidity, as well as by its very patent.' forking. In these respects it differs from C. fastzlaiatmn, which it most nearly resembles. Of the synonyme of Kiitzing, I feel confident, having submitted a specimen to that author; but by him 0. nodosum is placed in his genus Ion/zoceras, the character of which...show more

Product details

  • Paperback | 64 pages
  • 189 x 246 x 3mm | 132g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236802500
  • 9781236802507