Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 425
he absorption of moisture through this root-fibre, the inner ceU. is so distended, that it bursts the externalunyielding integument, and soon begins to elongate itself in. adirection opposite to that of the root-fibre. A production ofnew cells by subdivision then takes-place from its growing 402… … sF Development of ProtliaUium of Pteris serridafa:—a, spore set-freefrom the tlieca;—b, spore beginning to germinate, putting-fortli thetubular prolongation a from the principal cell b;—c, first-formedlinear series of cells;—d, prothallium taking the form of a leaf-likeexpansion; a first, and b…
Microscopy
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