Comments
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англиски
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добавил eFloras
The stems and leaves are used as a vegetable.
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Comments
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англиски
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добавил eFloras
Found in Marshy places, rice fields, from plains up to 1550 m but not common in our area. The vegetative parts of the plant vary in size and shape; the flowers are ephemeral (Backer and Heemstede, l.c.). Parts of the plants are used as a vegetable; root is chewed to cure toothache; bark used medicinally for asthma.
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Comments
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англиски
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добавил eFloras
By the 1970s, Monochoria vaginalis had become part of the rice-field flora of California (S. C. H. Barrett and D. E. Seaman 1980). C. D. K. Cook (1989) described this species as characteristic of rice fields; however, no records are known from the rice fields of Missouri to Louisiana.
As is typical of many aquatic annuals, plant size, leaf shape, and flower number are highly variable in relation to the amount of water (C. D. K. Cook 1989). Specimens from California typically have three to eight flowers, while descriptions of those from other parts of the world (H. Aston 1977; C. D. K. Cook 1989) suggest that the inflorescences of this species may have up to 20 flowers.
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Description
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англиски
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добавил eFloras
Rootstock small with adventitious roots. Stem suberect to erect. Leaves 25-70 x 11-39 mm, with 4-21 cm petiole; ovate to ovate-lanceolate, acute to acuminate, base rounded to cordate; nerves convergent. Inflorescence soon deflexed. Pedicel c. 7 mm long. Flowers buds lilac-blue. Perianth blue, spotted red, 8-8.5 mm long, oblong, subacute. Stamens c. half as long as the perianth. Ovary ovoid, 3 mm long; style c. 2 mm long, stigma 3-lobed. Capsule ovoid, c. 1 cm long. Seeds 1 mm long, elongated, ribbed longitudinally, transversely striated.
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Description
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англиски
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добавил eFloras
Herbs aquatic. Stems erect or obliquely so. Radical leaves with broad sheath; petiole 3--50 cm; leaf blade narrowly cordate, broadly or narrowly ovate, or lanceolate, 2--21 × 0.8--10 cm, apex acute to acuminate. Flowering stems 12--35 cm. Inflorescences soon reflexed after anthesis, 3--8(--12)-flowered; peduncle 1--3 cm, base bracteate; bract lanceolate. Flowers pedicellate. Perianth segments purplish, ovate-lanceolate to oblong, 0.8--1.5 cm. Larger stamen: filament appendaged; anther 1.8--4 mm. Smaller stamens: filaments filiform; anthers 1.5--3 mm. Capsule ovoid to ellipsoid, 0.7--1 cm. Seeds ellipsoid, ca. 1 mm; wings 8--12. Fl. Aug--Sep, fr. Sep--Oct.
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Description
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англиски
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добавил eFloras
Flowering stems 8–16.5 cm, distal internode 3–15 mm. Sessile leaves up to 5 cm, blade linear, apex acuminate. Petiolate leaves: stipule 3.5–5.7 cm; petiole 7–28 cm, rigid; blade cordate, 4–8 × 1.8–5.2 cm. Inflorescences paniculate, 3–8-flowered, all flowers opening same day; spathes 1.9–4 cm, sometimes with lanceolate to ovate extension. Perianth: limb lobes blue or white, narrowly ovate, 10–14 mm; larger stamen with hook, 4–6 mm, shorter stamens 3–4 mm; filaments linear, glabrous; style glabrous. Seeds 10–11-winged, 0.8–1.2 × 0.4–0.6 mm.
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Distribution
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англиски
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добавил eFloras
Throughout China [Bhutan, Cambodia, India, Indonesia, Japan, Korea, Laos, Malaysia, Myanmar, Nepal, Pakistan, Philippines, Russia (Siberia), Sri Lanka, Thailand, Vietnam; Africa, Australia].
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Distribution
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англиски
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добавил eFloras
Himalaya (Nepal, Bhutan), India east to China & Japan, Malaysia.
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Distribution
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англиски
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добавил eFloras
introduced; Calif.; Asia (India, China, Japan, and Malayan Islands).
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Distribution
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англиски
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добавил eFloras
Distribution: SE Asia to China, Japan and throughout Malaysia.
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Elevation Range
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англиски
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добавил eFloras
200-1800 m
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Flower/Fruit
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Fl. Per.: July-November.
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Flowering/Fruiting
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англиски
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Flowering (Jul--)Sep--Oct.
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Habitat
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англиски
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добавил eFloras
Rice fields, ephemeral ponds; 0--200m.
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Habitat
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англиски
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добавил eFloras
Rice fields, ditches, ponds, swamps; near sea level to 1500 m.
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Synonym
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англиски
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добавил eFloras
Pontederia vaginalis Burman f., Fl. Indica, 80. 1768; Monochoria plantaginea (Roxburgh) Kunth; Monochoria vaginalis var. pauciflora (Blume) Merrill
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Synonym
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англиски
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добавил eFloras
Pontederia vaginalis N. L. Burman, Fl. Indica 80. 1768; Boottia mairei H. Léveillé; Monochoria linearis (Hasskarl) Miquel; M. ovata Kunth; M. vaginalis var. pauciflora (Blume) Merrill; M. vaginalis var. plantaginea (Roxburgh) Solms; P. linearis Hasskarl; P. ovata Hooker & Arnott (1837), not Linnaeus (1753); P. pauciflora Blume; P. plantaginea Roxburgh.
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