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 193
-fibres aresometimes crystallogenous ; and the wide-cavitied sieve-tubes (v)with their companion-cells (c). These companion-cells are inmost cases cut off singly and obliquely from a side of the sieve-tube, and hence are usually bounded by a bast-parenchymacell or a medullary-ray cell. Where the… … Fig. 60.—Cross-section through the bast of Tilia parvifoha (alcohol material) v,sieve-tubes, at v* exposing sieve-plate; c, companion-cell; p, bast-parenchyma ; /c,crystallogenous cell; I, bast-fibre; 7; medullary ray (x 540). at a little distance from the cambium the sieve-tubes and…
Botany · Plant physiology · Microscopy
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