Drosera

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Standard Cyclopedia of Horticulture

Drosera (Greek droseros, dewy, from the dew-like excretions on the tips of the leaf- hairs). Droseraceae. A group of carnivorous plants popularly known as the Sundews or Dew-plants. The sts. usually short, slender or com- pressed, rarely elongate and upright in such types as D. peltata: lvs. varying from linear through lanceolate to circular, often arranged in a rosette, and beset over their upper surfaces with fine often irritable hairs, that excrete a clear neutral viscid fluid which entangles and catches insect prey; the hairs then bend inward toward the lf.-center, the fluid becomes acid and also excretes a proteinaceous ferment by which the animal tissues are digested, the dissolved products being then absorbed for the plant's nutrition: fl.-scapes slender, ending in curved scorpioid cymes of blooms, ¼-1½ in. across, and varying from white through pink to scarlet or crimson; sepals, petals and stamens 5 each, while the carpels vary from 5-3, are syncarpous with parietal placentation, and bear as many style-arms or lobes: fr. a caps.—About 90 species scattered over the world, though most abundantly in Austral. Monograph by Diels in Engler's Pflanzenreich, hft. 26. The species usually grow in moist muddy soil, at times almost floating in water, as in the common N. J. species, D. intermedia. Some Australian kinds form tubers, and can then survive through dry periods. The lvs. in our native species wither in autumn, and a small winter bud-rosette is formed, which unfolds its lvs. in the succeeding spring. The native and exotic species all grow well if treated as greenhouse plants, and grown in fine muddy loam topped by a little sphagnum. They should also be kept constantly moist in their root extremities, and exposed to bright light. The following native and exotic species are now often grown in collections. They can be propagated by seeds, by division of the shoots, or by cutting the slender rhizomes into short lengths of ½-1 in. The last, when placed in moist soil, root and form buds in two to three weeks. CH The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

External links

• w:Drosera. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
• Drosera QR Code (Size 50, 100, 200, 500)