Handbook of practical botany for the botanical laboratory and private student (1908)
Strasburger, Eduard, 1844-1912, Hillhouse, William, 1850-1910 · London, S. Sonnenschein; New York, Macmillan · leaf 262
Lonedtudinal APICAL CELL OF PTERIS. 225 Study the root of Ptcris cretica (Fig. 89), but can equally wellchoose any other species of Fern. By turning upside down aflower-pot in which the fern is growing we easily obtain un-injured root-apices. The roots of Pteris cretica, as of fernsgenerally, are… … Fig. 89.—Median longitudinal section through the root of Pteris cretica. t, apicalcell ; k, initial cell of root-cap ; A;«, outermost layer of root-cap ; c, median corticalwall; p, outer wall of the central cylinder ; r, inner cortical wall; e, epidermal wall(x 240). inner part strongly thickened.…
Botany · Plant physiology · Microscopy
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