Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 424
f the spores may be observedto take-place, whilst the specimen is under observation in thefield of the microscope. In sori whose capsules have all burst,the annuli connecting their two halves are the most con-spicuous objects, looking, when a strong light is thrown uponthem, like strongly-banded… … Sorus and indusium of Aspidium. ^orus and cup-shaped indusiimi of ^ Deparia prolifera. their stages; until quite mature, however, they need to bebrought into view by turning-back the two indusial folds thatcover them. The commonest Eerns, indeed, which are foundin almost every hedge, funiish…
Microscopy
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