米林虎耳草檢視原始碼討論檢視歷史
米林虎耳草 |
中文學名:米林虎耳草 拉丁學名:Saxifraga tigrina H. Smith 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:菫菜目 科:虎耳草科 屬:虎耳草屬 分布區域:西藏自治區 |
米林虎耳草(mǐ lín hǔ ěr cǎo,學名 Saxifraga tigrina H. Smith)產自我國西藏東南部。生於海拔3 000-3 600米的山坡、溝邊或石隙。 [1]
米林虎耳草形態特徵
多年生草本,叢生,高約45厘米。莖不分枝,被褐色捲曲長腺毛。
基生葉早枯凋,在花期不復存在;莖生葉19-22枚,最下部者通常早枯凋,中下部者具柄,葉片卵形至卵狀心形,長2.7-3.4厘米,寬1.8-2.35厘米,先端急尖或短漸尖,基部圓形至心形,被褐色腺毛;
葉柄向上漸變短,長0.2-1.8厘米,疏生褐色捲曲長腺毛,最上部者無柄,卵形至狹卵形,長3.1-3.3厘來,寬1-2厘米,先端漸尖,腹面和邊緣具黑褐色短腺毛,背面被柔毛。
多歧聚傘花序長約7厘米,約具11花;花序分枝通常具2花;花梗被黑褐色腺毛;萼片在花期反曲,三角狀卵形,長5-6毫米,寬2.8-3毫米,先端齧蝕狀,邊緣膜質,僅背面被黑褐色腺毛,3-6脈於先端不匯合。
花瓣黃色,腹面具紫紅色斑點,卵形、闊卵形至橢圓形,長3.8-7毫米,寬2.6-4.9毫米,先端急尖或鈍,基部狹縮成長0.3-1毫米之爪,3脈,具8痂體;雄蕊長5-5.5毫米,花葯紫色,花絲鑽形;
子房近上位,卵球形,長3.5-3.6毫米,花柱2,長1.4-1.5毫米。花期7-8月。 [2]
Saxifraga tigrina H. Smith in Bull. Brit. Mus. Bot. 2(9) : 233. f. 3a-c. 1960; 西藏植物志2: 471. 圖156: 25-27. 1985. ——S. minlingensis J. T. Pan in Acta Phytotax. Sin. 16(2): 23. f. 7. 1978.
Saxifraga minlingensis J. T. Pan.
Herbs perennial, cespitose, ca. 45 cm tall. Stem simple, brown crisped glandular villous. Basal leaves sometimes caducous, broadly ovate to elliptic, ca. 4 × 3 cm, base cordate, truncate, or cuneate, tapered into a petiole. Cauline leaves 4-8, abruptly smaller distally on stem; petiole of median leaves 0.2-4 cm, sparsely brown crisped glandular villous; leaf blade ovate to elliptic, 2.0-3.4 × 1.8-2.4 cm, brown glandular hairy, glabrate adaxially, base rounded to cordate, margin eglandular villous, apex acute or acuminate; most distal leaf sessile, ovate to narrowly so, 1.5-2 cm × 3-7 mm, abaxially and marginally dark brown glandular hairy, adaxially glabrate. Inflorescence 7-8 cm, 5-20-flowered; branches usually 2-flowered; pedicels dark brown glandular hairy. Sepals reflexed, triangular-ovate, 5-6 × 2.8-3 mm, abaxially glabrous, veins 3-6, not confluent at apex, margin membranous, apex glandular ciliate, erose. Petals yellow, adaxially purple spotted, ovate or broadly so to elliptic, 3.8-7 × 2.6-4.9 mm, 8-callose, 3-veined, base contracted into a claw 0.3-1 mm, apex obtuse or acute. Stamens 5-5.5 mm; anthers purple. Ovary subsuperior, ovoid, 3.5-3.6 mm; styles 1.4-1.5 mm. Fl. Jul-Aug.
- Slopes, by water, rock crevices; 3000-3600 m. SE Xizang.
米林虎耳草生長環境
生於海拔3 000-3 600米的山坡、溝邊或石隙。[3]