. Introduction to cryptogamic botany. Cryptogams. INTEODUCTION TO CBTPTOGAMIC BOTANY. 225 which change to a verdigris green when exposed to the atmosphere. The spores are sometimes the metamorphosed joints of scattered threads, but frequently the threads are compacted into distinct receptacles. The species are perhaps less known than some others as regards their fruit, from their being deep-sea plants, and therefore only obtainable in a good state by dredging. There has been a good deal of discussion as to their affinity, but if the larger species be considered, there is but little doubt that
. Introduction to cryptogamic botany. Cryptogams. INTEODUCTION TO CBTPTOGAMIC BOTANY. 225 which change to a verdigris green when exposed to the atmosphere. The spores are sometimes the metamorphosed joints of scattered threads, but frequently the threads are compacted into distinct receptacles. The species are perhaps less known than some others as regards their fruit, from their being deep-sea plants, and therefore only obtainable in a good state by dredging. There has been a good deal of discussion as to their affinity, but if the larger species be considered, there is but little doubt that they are rightly placed Fig. 58. a. Spore threads of Arthroeladia viUosa, magnified. h. Pedunculate receptacle of Sporochnus pedunoulatus, ditto. c. Spores on the threads from the receptacle.* Both from specimens dredged at "Weymouth. Many of the species produce tufts of delicate filaments, which have, however, nothing to do with the fruit. The same species varies singularly in breadth, the extreme forms being so * It will be observed that the threads'are sometimes terminated with a swollen aub-pileiform cell mush after the fashion of Carpomitra Cabrerce. 15. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Berkeley, M. J. (Miles Joseph), 1803-1889. London, New York, H. Bailliere; [etc. ,etc]
Size: 1522px × 1641px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorberkeley, bookcentury1800, bookdecade1850, bookyear1857
