Kalmiopsis |
Kalmiopsis leachiana |
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kalmiopsis |
kalmiopsis, north Umpqua kalmiopsis, Siskiyou kalmiopsis |
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Habit | Shrubs, (sometimes rooting adventitiously and suckering). | Shrubs, erect, rarely trailing, usually tufted, 2–4(–8) dm. | ||||
Stems | erect or trailing, (branching from base); twigs (terete), puberulent and sparsely sessile- or stipitate-glandular, becoming glabrate, (older twigs without peglike projections). |
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Twigs | pale reddish to purplish, becoming gray to dark gray, puberulent and sparsely stipitate-glandular, becoming glabrate. |
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Leaves | persistent, alternate; petiole present; blade coriaceous, margins entire; (buds with sessile glands). |
aromatic; petiole 0.5–2 mm, sparsely puberulent and sessile-glandular; blade dark green abaxially, light green adaxially, elliptic to elliptic-oblong, 10–25 × 5–12 mm, base cuneate, margins entire, usually plane, apex obtuse, usually apiculate, surfaces glabrous or sparsely sessile dotted-glandular abaxially, densely covered with sessile crystalline-punctate glands adaxially. |
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Inflorescences | terminal, corymbiform racemes, 2–15-flowered; perulae absent. |
erect, (5–)7–12(–15)-flowered; bracts leaflike. |
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Pedicels | 1–2 cm, hairy, glandular. |
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Flowers | bisexual, radially symmetric; sepals (persistent), 5, nearly distinct; petals 5, connate ca. 1/3–1/2 their lengths, corolla deciduous, campanulate; stamens 10, exserted; anthers not awned, dehiscent by apical pores; ovary 5-locular, (subglobose); stigma capitate. |
calyx lobes light purple, ovate, 3–5 mm, margins ± glandular-ciliate; corolla rose to deep pink, (12–)14–20 mm diam., petal ridges connected between corolla lobes, lobes connate ca. 1/2 their lengths, abaxial surface ± puberulent and glandular apically (throat puberulent or glabrous); filaments 3–7(–10) mm, rarely ciliate basally; anthers purple, oblong, 0.7–1.8 mm; style dimorphic, 7–10 mm (long form), 3–6 mm (short form); ovary puberulent, dotted-glandular. |
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Fruits | capsular, (5-valved), subglobose, dehiscence basipetally septicidal. |
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Seeds | ca. 50–150, ovoid, not winged, not tailed; testa reticulate. |
0.3–0.7 mm. |
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x | = 12. |
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2n | = 24. |
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Kalmiopsis |
Kalmiopsis leachiana |
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Phenology | Flowering late spring–early summer. | |||||
Habitat | Open sunny ridges in xeric shrub community or sparse woodland, rooted in shallow or, more often, deeper soils, on a range of substrates, often including ultramafics | |||||
Elevation | (200-)600-1400 (-2100) m ((700-)2000-4600 (-6900) ft) | |||||
Distribution |
sw Oreg |
OR
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Discussion | Species 2 (2 in the flora). Kalmiopsis is the only vascular plant genus endemic to the state of Oregon; it is cultivated for its showy flowers. Although early tradesmen found Kalmiopsis a difficult subject for propagation, plants can be grown with perseverance and are today occasionally established in private and public gardens in the Pacific Northwest, Europe, and elsewhere. The plants are evidently long-lived and generally reproduce infrequently in nature. Flowers exhibit a pronounced stigma height polymorphism; further study is needed to assess its breeding system significance. Distyly is otherwise unknown in the Ericaceae, with the possible exception of Epigaea repens, a dioecious species that exhibits a continuum of long- and short-styled flowers yet lacks other evidence of heterostyly. The genus is the namesake for the Kalmiopsis Wilderness Area, a remote region just east of the Pacific Ocean that is rich in endemic species and remarkable substrates. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Kalmiopsis leachiana is known from the Siskiyou Mountains in Curry and Josephine counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 478. | FNA vol. 8, p. 479. | ||||
Parent taxa | ||||||
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Subordinate taxa | ||||||
Synonyms | Rhododendron leachianum, Rhodothamnus leachianus | |||||
Name authority | Rehder: J. Arnold Arbor. 13: 31, plate 40. 1932 , | (L. F. Henderson) Rehder: J. Arnold Arbor. 13: 32. 1932 , | ||||
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