Smelowskia |
Smelowskia media |
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candytuft, false candytuft, smelowskia |
fernleaf false candytuft |
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Habit | Plants cespitose, caudex well-developed, thick, often-branched, covered with persistent petiolar remains; not scapose; usually pubescent. | Plants sometimes canescent basally; caudex branched. | ||||||||||||||||||||||||
Stems | erect to decumbent, unbranched or branched distally, densely pubescent. |
several from base, unbranched, (0.2–)0.5–1.4(–1.8) dm, trichomes simple, 0.5–1.2 mm, mixed with smaller, dendritic ones. |
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Leaves | basal and cauline; petiolate or sessile; basal rosulate, petiolate, blade margins usually 1- or 2-pinnatisect, rarely entire. |
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Basal leaves | petiole 0.7–3.5 cm, ciliate, trichomes simple; blade oblanceolate to obovate, or ovate to oblong in outline, (terminal segments linear, oblong, or ovate), 0.5–3 cm × 4–12 mm, (terminal segments 0.2–1.4 cm × 0.5–4 mm), margins usually pinnatifid, rarely apically 3 or 5-lobed, apex obtuse or subacute. |
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Cauline leaves | shortly petiolate or sessile; blade similar to basal, smaller distally. |
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Racemes | (corymbose, several-flowered), often considerably elongated in fruit. |
elongated in fruit. |
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Flowers | sepals (sometimes persistent), oblong [ovate]; petals spatulate to obovate or suborbicular, (longer than sepals), claw differentiated from blade, (apex rounded); stamens slightly tetradynamous; filaments often dilated basally; anthers ovate or oblong, (apex obtuse); nectar glands usually confluent, subtending bases of stamens, median glands present or not. |
sepals 2–3 mm; petals white, suborbicular to obovate, 4–5 × 2–3 mm, narrowed to claw, 1.5–2 mm, apex rounded; anthers oblong, 0.5–0.6 mm. |
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Fruiting pedicels | ascending, spreading, suberect, or divaricate [recurved], slender. |
usually spreading to divaricate, rarely divaricate-ascending, (often forming greater than 40˚ angle, straight or upcurved), proximalmost bracteate, 4–12 mm, pubescent, trichomes simple mixed with smaller, dendritic ones. |
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Fruits | siliques or silicles, usually sessile, rarely shortly stipitate, linear, oblong, obovoid, ellipsoid, spatulate, oblanceolate, suboblong, or pyriform [fusiform, ovoid, suborbicular], smooth, 4-angled, angustiseptate, terete, or subterete [latiseptate]; valves each with prominent or obscure midvein, usually glabrous; replum rounded; septum complete or perforated; ovules 4–18 per ovary; stigma capitate. |
divaricate-ascending, ellipsoid to oblong, 4-angled, 5–11 × 2–3 mm, base and apex cuneate; valves each with prominent midvein; ovules 8–12 per ovary; style 0.1–0.5 mm. |
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Seeds | plump, not winged, usually oblong, rarely oblong-lanceolate; seed coat (minutely reticulate), not mucilaginous when wetted; cotyledons incumbent or accumbent. |
1.7–2.2 × 0.9–1.1 mm. |
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2n | = 12. |
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Smelowskia |
Smelowskia media |
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Phenology | Flowering Jun–Jul. | |||||||||||||||||||||||||
Habitat | Talus scree slopes, dry calcareous gravel flats, limestone scree, tundra turf, seepages, bluffs, stony slopes, grassy quartzite slopes, gravelly lake shores | |||||||||||||||||||||||||
Elevation | 400-1500 m (1300-4900 ft) | |||||||||||||||||||||||||
Distribution |
North America; e Asia; c Asia |
AK; NT; YT |
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Discussion | Species 25 (7 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Smelowskia media resembles S. americana in aspects of habit, flowers, and fruits. It differs by having non-appressed (versus appressed) fruits, fruiting pedicels held at wider angles (greater than 40˚ versus less), and somewhat larger seeds (1.7–2.3 × 0.9–1.2 mm versus 1.1–1.9 × 0.6–0.9 mm). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 7, p. 671. | FNA vol. 7, p. 674. | ||||||||||||||||||||||||
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Synonyms | Acroschizocarpus, Ermania, Melanidion | S. calycina var. media | ||||||||||||||||||||||||
Name authority | C. A. Meyer: in C. F. von Ledebour, Icon. Pl. 2: 17, plate 151. (1830) | (W. H. Drury & Rollins) Velichkin: Bot. Zhurn. (Moscow & Leningrad) 64: 167. (1979) | ||||||||||||||||||||||||
Web links |