yáng shuò hǔ ěr cǎo
阳朔虎耳草
Saxifraga yangshuoensis Hai L. Chen, W. B. Xu & Yan Liu
分类信息
模式标本:CHINA. Guangxi. Guilin City, YangShuo County, JinBao Town, 110.2542°E, 24.8182°N, 566 m alt., 10 Oct 2021, Hailing Chen, Ying Qin and Jinquan Huang, YS0038 (Holotype: IBK!; Isotypes: IBK!, PE!, SYS!).
形态特征
形态特征:Perennial herbs, 20–40 cm tall. Stolons absent. Rhizomes rather short. Basal leaves forming a rosette; petiole 5–10 (15) cm long, fleshy, densely short glandular trichomes (ca. 1 mm long), petiole base sheathed, glabrous, margin sparsely very short glandular trichomes (ca. 0.3 mm) or nearly glabrous; leaf blade rounded or ovate, apex rounded or obtuse, base deep cordate, thickly papery, 3.0–5.0 (8.3) × 2.5–5.5 (7.5) cm, margin subentire, slightly undulate (occasionally inconspicuous 7–13-lobed), with sparsely glandular trichomes, slightly revolute when dried, adaxially green, densely covered glandular hispid (2–3.5 mm long), abaxially pale green, sparsely covered with glandular trichomes (1–2 mm long), densely covered with pale green or occasionally purple spots; palmate veins 7–9, both surfaces inconspicuous. Inflorescence paniculate, 20–40 cm long, 10–40-flowered; branches 4–17 cm long, sparsely short glandular trichomes (0.5–1 mm), 2–8- flowered; pedicels slender, 1–2 cm long, sparsely short glandular trichomes (0.3–0.5 mm long); bracts 4–8, lanceolate to narrowly triangular, 3.0–1.0 × 1.0–2.5 mm, margin with sparsely glandular trichomes. Flowers zygomorphic; sepals 5, reflexed, narrowly ovate, 2.0–3.0 × 1.0–1.5 mm, adaxially glabrous, abaxial surface and margin with sparsely short glandular trichome, 3 veins inconspicuous. Petals 5, white, apex greenish; shortest 3 petals ovate, base with yellow spots, 3.5–5 × 1.5–2 mm, apex acute, base with a claw ca. 0.5 mm long, triplinerved; the other two petals lanceolate, apex gobtuse to subacuminate, margin entire, glabrous, 3-veined; longer petal 10–17 × 1.5–2 mm; longest petal 12–21 × 1.5–2 mm. Stamens 10, filaments clavate, ca. 0.4 mm long. Ovary ovoid, 1.5–2.5 mm long; styles 2, divergent, 1.5–2 mm long. Capsule ovoid, ca. 3.5 × 3 mm. Seeds elongate- ellipsoid, dark brown, ca. 0.3 mm long.
生态习性
产地:广西桂林市阳朔
生境:生于阔叶林山谷附近潮湿的悬崖和岩石上。
海拔:海拔370–570米
物候:花期9-12月,果期11月-下一年1月