Subject ASC00000n3
Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature.
v. 25 (1889), Page 81 (1889)
MBLWHOI Library
BHL Page 1692998
Keywords
algae freshwater algae androgonia intercalary growth zoogonidium oosphere oospore oogonium anthrozoa growth germination fertilisation Notes on Cedogonium Edogonium oedogonium fresh-water algae mature oospore oogonia dwarf males fertilised oosphere escape cell spindle-shaped chlorophyll nucleus with nucleolus annular cushion hair young plant apical cell trichome structure plant's cells Algae reproduction in stages plant edogonium Appear to be plants tube like Plants 1Young plant with hair at apex. 2. Edogonium showing annular cushion at a which has actually been drawn out at b. 3. Edogonium cell 4. Formation of androgonia at b and result of intercalary growth at a. 5 and 6. Escape and germination of zoogonidium 7. Fertilised oosphere (+oospore). 8. Androgonia settling. 9. Three dwarf males on an oogonium. 10. Dwarf males germinating on cells below oogonia. 11. The act of fertilization. The anthrozoa is just vanishing as a black spot into the substance of the oosphere. 12. Mature oospore. cell structure Oedogonium green alga filamentous algae reproduction cells