. The classification of flowering plants. Plants. AROIDEAE 265 and does not bear seeds, reproducing only vegetatively by branching of the rhizome; it is supposed to have been introduced from India. Tribe 2. Monsteroideae. Land-plants. No latex-sacs are associated with the vascular bundles, but spicular cells occur in the ground-tissue. Lateral nerves of the third and foiulh degree or second, third, and fourth degree reticulately united. Flowers hermaphrodite, generally naked. Ovules anatropous or amphitropous. 11 genera. Monkera, a tropical American genus of climbing shrubs with large, often m
. The classification of flowering plants. Plants. AROIDEAE 265 and does not bear seeds, reproducing only vegetatively by branching of the rhizome; it is supposed to have been introduced from India. Tribe 2. Monsteroideae. Land-plants. No latex-sacs are associated with the vascular bundles, but spicular cells occur in the ground-tissue. Lateral nerves of the third and foiulh degree or second, third, and fourth degree reticulately united. Flowers hermaphrodite, generally naked. Ovules anatropous or amphitropous. 11 genera. Monkera, a tropical American genus of climbing shrubs with large, often much perforated leaves ; the fruiting spikes of M. delidosa (Mexico) are eaten as a fruit. Tribe 3. Calloideae. Land- or marsh-plants. Vascular bundles of the stem and leaf- stalk with straight latex-sacs. Flowers generally hermaphrodite. Ovules ana- tropous or straight. Leaves never sagit- tate, generally reticulately veined. Four monotypic genera of the north temperate zone; herbs with creeping rhizome. Calla paliLStris (fig. 128, F—I) is a marsh-plant of central and northern Euroi)e (not in Britain). Siberia and Atlantic America. The shoots develop in alternate years first long-stalked, roundish leaves with cordate base, and secondly generally a pair of foliage-leaves and a long-stalked, short cylindrical spadix, subtended by a broad spreading spathe. The flowers, which are naked, consist of six or more stamens with rela- tively long filaments and short anthers surrounding a short egg-shaped unilocular ovary, from the baise of which spring six to nine long anatropous Fig. 127. Acorus Cala- mus. Plant, ^ nat. size. A. Flower, x 3. B. Ovary in longitudinal section shew- ing pendulous ortbotropous ovules, X 7. C. Floral dia- gram. Habit after Bentley and Trimen. A, B, and C after Luerssen. Leaves sagittate in out- Tribe 4. Laiioideae. Land- or marsh-plants. Vascular bimdles of stem and leaf-stalk with straight latex-sacs. Flowers her- maphrodite or unisexual. Ovules a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1904
