Phases of the Anatomy of Asparagus officinalis

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Abstract
Longitudinal sections of the hypocotyl show the first bud and epicotyl, with a smaller bud in the axil of the basal scale leaf. These buds form an angle of 180[degree] with the cotyledon. Subsequent buds form either to the right or left of the main growth axis, alternate in position so that 2 rows of spear scars appear on the older rootstock. Buds are differentiated very rapidly as the plant becomes older and form a cluster at the growth terminal of the crown. The crowns of older plants exhibit a branching effect, for, as lateral buds develop, they extend the crown in new directions. Buds just before elongation contain the spear in miniature form. Elongation begins in the lower portion of the stem and continues upward, so that the tip is still embryonic when the base is almost mature. There is a progressive development of new storage roots from the young tissues of the crown.

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