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 51
o-wards the surface of thegrain the layering becomesindistinct. For opticalreasons, and on accountof its lesser density, theorganic centre, or hilum, appears somewhat reddish. This isclearest when it is hollow, and it then shows either as a reddishdot, line, cross, or star with dark outlines. The… … Fig. 5.—Starch grains from a potato-tuber, Asimple grain, B half-compound grain, Cand Dentirely compound grains, c the nucleus (x 540). POTATO STARCH—AIR BUBBLES. 15 some cases disappearing altogether. At this more feebly developedend of the grain, which we will call the anterior end, the…
Botany · Plant physiology · Microscopy
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