Subject ASC0000br7

The Intellectual observer.
v.5 (1864), (1864)
Harvard University, MCZ, Ernst Mayr Library
BHL Page 39488486

Keywords

ferns plants seeds botany fern spore foramen germination development cell vesicle germ radia extine spores fern: fern spores: plants: germination fern spores exogenous seeds diagrams microscopic view spore germination back young

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