Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 453
actly arranged, is notabsolutely at its exterior, this portion being itself surroundedby an investment composed of cellular tissue only; andsometimes we find the central portion, also, completely des-titute of fibro-vascular bundles; so that a sort of indicationof the distinction between pith,… … m ^% 430 MICHOSCOPIC STUUCTURE OF PHANEROGAMIC PLANTS. layer. In its young state, the centre of the stem is alwaysfiHed-up with cells; but these not unfrequently disappear after a time, except at the nodes,^i<^-164. leaving the stem hollow, as we see in the whole tribe ofGrasses. When a…
Microscopy
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