Glossary of Botanical Terms:
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ocrea (ochrea): a sheath formed from two fused stipules encircling the node in Polygonaceae. Fig. 4 H. pl. ocreae.
Fig. 4. Lamina or Leaf Attachment, Stipules etc. A, peltate; B, petiolate; C, decurrent; D, sessile; E, gamophyllous; F, perfoliate; G, sheathing; H, ocrea; I–L, stipules; I, paired stipules; J, interpetiolar stipules; K, spinose stipules; L, rolled terminal stipules.
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