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2. Petrocosmea oblata Craib, Notes Roy. Bot. Gard. Edinburgh. 11: 270. 1919.
扁圆石蝴蝶 bian yuan shi hu die
Petiole 0.7-4 cm, puberulent to glabrescent; leaf blade oblate to orbicular-ovate or nearly orbicular, 0.7-2.8 X 0.9-3.2 cm, sparsely puberulent, base nearly cordate to truncate-cordate or broadly cuneate, margin repand, apex rounded to truncate; lateral veins inconspicuous. Cymes 1-flowered; peduncle 3.5-8.5 cm, puberulent; bracts linear to narrowly triangular, 1.1-1.5 mm. Pedicel 2-3.2 cm. Calyx actinomorphic, 5-sect from base; segments equal, narrowly lanceolate to linear or triangular-ovate, 1-3 X 0.3-1.7 mm, outside glabrous or sparsely puberulent. Corolla blue, glabrous; tube 2.5-3 mm; adaxial lip ca. 6 mm, distinctly 2-lobed; abaxial lip 6-8 mm. Filaments ca. 1.5 mm, glabrous; anthers ovoid, 1.5-2.5 mm, beakless; staminodes 2 or 3. Pistil 7-8.8 mm; ovary ca. 2.5 mm, puberulent. Style puberulent near base. Capsule ca. 4 mm. Fl. and fr. Aug-Sep.
* Montane regions or limestone soils; 2200-3000 m. SW Sichuan, NE Yunnan.
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Bracts linear, ca. 1.5 mm; calyx segments narrowly lanceolate to linear, 1-3 X 0.3-1 mm, outside sparsely puberulent, inside glabrous; staminodes 2, ca. 1 mm |
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2a var. oblata |
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Bracts narrowly triangular, ca. 1.1 mm; calyx segments triangular-ovate, 2-3 X 1-1.7 mm, glabrous; staminodes 3, ca. 0.1 mm |
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2b var. latisepala |
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Lower Taxa
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