Comments
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R. angulatus is a close relative of R.longifolius DC. and R. pseudonatronatus Borb.; both are northern species.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Herbs perennial. Stems erect, purple-red, 40-60 cm tall, glabrous, grooved. Basal leaves: petiole 3-5 cm; leaf blade oblong-lanceolate, 15-20 × 3-5 cm, both surfaces glabrous, base cuneate, apex acute; cauline leaves shortly petiolate, lanceolate; ocrea fugacious, membranous. Inflorescence terminal, paniculate, dense; rachis slightly zigzagged. Flowers bisexual. Pedicel filiform, slender, articulate below middle. Inner tepals enlarged in fruit; valves orbicular-cordate, ca. 5 × 4 mm, all without tubercles, net veined, base cordate, margin nearly entire or irregularly minutely crenate, apex obtuse. Achenes yellow-brown, shiny, ovoid, trigonous, ca. 3 mm. Fl. Jun-Jul, fr. Jul-Aug.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Perennial with tap root, plant often tinged purplish. Stem strict, erect, 40-80 (-110) cm high, sometimes flexuous, with short arcuate-erect flowering and fruting branches, not fasciculate, unbranched, forming a rather narrow condensed fruiting panicle. Basal leaves not known; lower stem leaves with short petiole, up to 15 x 4 cm, lanceolate, broadest in the middle, shrotly tapering towards the base, longer towards the apex, with ± indistinctly cordate base, flat; stem leaves gradually smaller and with short petioles, uppermost subtending the lowest inflorescence branches sometimes narrowly linear. Flower whorls many-flowered, all very densely congested. Pedicels very thin, equalling or up to 1.5 times longer than the valves, indistinctly articulate below the middle. External perianth segments 1.5 mm long, appressed to the base of the valves. Valves about 5 mm long and broad, very finely reticulate, orbiculate-cordate, entire or subentire, grainless or the anterior sometimes with a very small grain. Nut ± 2.5 mm long, pale brown, subequally attenuate at boath ends.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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Xizang [Afghanistan, Kashmir, Pakistan].
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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Distribution: Ladakh, W. Xizang, Indus Valley, Kashmir, Chitral and Afghanistan.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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Watersides, moist valleys; 3000-4200 m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
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R. orientalis Hook.f., Fl. Brit. Ind. 5: 58. 1890 p.p. nec Bernh. 1830.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA