. The classification of flowering plants. Plants. LOGANIACEAE 401 Many are woody climbing plants (lianes), either twining, as Fagraea, or tendril-climbers, as in many species of Strychnos, the tendrils of which are hook-like axillary shoots, which on twining round a support become thickened and lignified; the subtending leaf is reduced to a scale. In other species of this genus axillary or terminal shoots become modified into straight or curved thorns. The stipules are variously developed; they may be con- spicuous interpetiolar structures, or reduced to a stipular line connecting the petioles

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. The classification of flowering plants. Plants. LOGANIACEAE 401 Many are woody climbing plants (lianes), either twining, as Fagraea, or tendril-climbers, as in many species of Strychnos, the tendrils of which are hook-like axillary shoots, which on twining round a support become thickened and lignified; the subtending leaf is reduced to a scale. In other species of this genus axillary or terminal shoots become modified into straight or curved thorns. The stipules are variously developed; they may be con- spicuous interpetiolar structures, or reduced to a stipular line connecting the petioles (Strychnos). In Fagraea and others they form intrapetiolar structures by which the growing point is. Fig. 218. Buddleia americana. A. Leaf and inflorescence, x f. B. Flower, x 6, C. Flower in longitudinal section, x 8. D. Fruit dehiscing, x 4. E. Seed, x22. originally protected. Certain anatomical characters are constant in larger or smaller groups. The larger subfamily Loganioideae is characterised by presence of internal phloem and absence of glandular hairs, and the smaller Buddleioideae by absence of internal phloem and presence of glandular hairs. Laticiferous tissue is always absent. Strychnos and a few allied genera are characterised by isolated groups of soft bast in the wood (phloem- islands). The cymose inflorescence shews various degrees of development; bract and bracteoles are generally present and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Rendle, A. B. (Alfred Barton), 1865-1938. Cambridge, University press