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 261
ojects from one ofthe xylem rays. Its point of origin, indeed, is in the pericycle,opposite to a protoxylem group, and as the xylem rays run instraight lines in the central cylinder, the arrangement of lateralroots in straight rows is at once accounted for. Apical Cell of Pteris.—We will now study… … 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…
Botany · Plant physiology · Microscopy
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