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FOC | Family List | FOC Vol. 16 | Gentianaceae | Tripterospermum

9. Tripterospermum microphyllum Harry Smith in S. Nilsson, Grana Palynol. 7(1): 144. 1967.

小叶双蝴蝶 xiao ye shuang hu die

Gentiana parvifolia Hayata.

Stems slender, terete, long creeping on ground, producing rootlets from nodes. Petiole 2-5 mm, slender; leaf blade lanceolate to ovate, 1-2(-3) cm × 3-5(-7) mm, base rounded to truncate, margin crenulate and slightly revolute, apex acuminate, veins 1-3. Flowers solitary; bracts ovate, ca. 1 cm. Pedicel 3-7 mm. Calyx campanulate; tube 5-7 mm, winged, papillate or pubescent along ridges; lobes linear, as long as or longer than tube. Corolla blue, campanulate, ca. 2.5 cm; lobes ovate-triangular, 3.5-4.5 mm, apex acute; plicae semiorbicular, 1-1.5 mm, margin crenulate. Filaments linear-subulate, 2-2.2 cm; anthers ovoid, ca. 1 mm. Disc ca. 0.5 mm. Ovary fusiform, 1-1.2 cm; gynophore ca. 2 mm. Style linear, 1.2-1.7 cm. Fl. Jul-Sep.

* Subalpine coniferous forests and margins of forests. Taiwan.


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