Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 638
ucture of remarkable com-plexity. Each of these stomates< as they are termed, from theGreek ctto/jm, mouth) forms a sortof shaft (g), composed of four orAve rings (like the courses ofbricks in a chimney) placed oneupon the other (h), every ring-being made up of four or livecells ; and the lowest… … manner each of the air-chambersof the frond is brought into com-munication with the externalatmosphere, the degree of thatcommunication being regulated tia polymorpha : A, portion seen fromabove; a, a, lozenge-shaped divisions; b, b, stomates in the centre of the lozenges; c, c, greenish bands…
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