The elements of botany for beginners and for schools . enwrapped by tubular cells twisted around it: by the side of this is asmaller and globular antheridium. The latter breaks up into eight shield- FlG. 553. Agarum Tumeri, Sea Colander (so called from the perforations withwhich the frond, as it grows, becomes riddled); very much reduced in size. Fio. 554. Upper end of a Rockweed, Fucus vesioulosus, reduced half or more,b, the fnictifioatjon. 168 CRYPTOGAMOUS OR FLOWEBLESS PLANTS. [SECTION 17. shaped pieces, with au internal stalk, and bearing long and ribbon-shapedfilaments, which consist of
The elements of botany for beginners and for schools . enwrapped by tubular cells twisted around it: by the side of this is asmaller and globular antheridium. The latter breaks up into eight shield- FlG. 553. Agarum Tumeri, Sea Colander (so called from the perforations withwhich the frond, as it grows, becomes riddled); very much reduced in size. Fio. 554. Upper end of a Rockweed, Fucus vesioulosus, reduced half or more,b, the fnictifioatjon. 168 CRYPTOGAMOUS OR FLOWEBLESS PLANTS. [SECTION 17. shaped pieces, with au internal stalk, and bearing long and ribbon-shapedfilaments, which consist of a row of delicate cells, eaoli of which dis-charges a free-moving microscopic thread (the analogue of the pollen orpollen-tube), nearly in the manner of Perns and Mosses. One of thesethreads reaches and fertihzes a cell at the apex of the nucleus or sohdbody of the sporocarp. This subsequently germinates and forms a newindividual. 507. Algae or Seaweeds. The proper Seaweeds may be studied bythe aid of Professor Farlows Marine Algm of New England; the.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1887
