Glossary of Botanical Terms:
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spiral: of leaves or floral organs, borne singly at different levels on the axis, but not in a single vertical line; leaves borne spirally are said to be alternate on the stem. Fig. 2 A. cf. whorled, alternate.
Fig. 2. Leaf Arrangement. A, alternate; B, alternate and 2-ranked; C, opposite; D, opposite and decussate; E, equitant; F, whorled; G, pseudowhorled; H, imbricate; I, basal; J, fascicled.
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