近等葉虎耳草檢視原始碼討論檢視歷史
近等葉虎耳草 |
中文學名:近等葉虎耳草 拉丁學名:Saxifraga subaequifoliata 界:植物界 門:被子植物門 綱:雙子葉植物綱 科:虎耳草科 屬:虎耳草屬 分布區域:產四川 |
近等葉虎耳草(jìn děng yè hǔ ěr cǎo,學名:Saxifraga subaequifoliata),為虎耳草科、虎耳草屬下的一個種。產自四川(稻城)、雲南西北部和西藏(墨脫)。 [1]
近等葉虎耳草形態特徵
多年生草 本,高18.5-37厘米。莖被褐色腺柔毛。
莖生葉10-13枚,下部者具柄,向上漸變無柄,葉片卵狀心形、卵形至狹卵形,長2.4-3.5厘米,寬0.7-2.5厘米,先端急尖或稍鈍,基部心形至圓形,兩面和邊緣均多少具腺毛,葉柄長0.3-3.3厘米,具腺柔毛。
多歧聚傘花序圓錐狀,長3.2-14厘米,具6-30花;最下部之花序分枝長6-7厘米,具2-3花;花梗被黑褐色短腺毛;
萼片在花期反曲,闊卵形、卵形至三角狀狹卵形,長(1.1-)2.5-3毫米,寬2-2.2(-4.8)毫米,先端急尖或鈍,腹面無毛或其上部疏生腺毛,背面被短腺毛,邊緣膜質且多少具腺睫毛,3(-7)脈於先端不匯合;
花瓣黃色,具紫色斑點,通常為卵形至橢圓形,稀闊卵形至闊橢圓形,長4.5-6.8毫米,寬2.6-3.6毫米,先端急尖或鈍,基部狹縮成長0.5-1毫米之爪,3-4(-8)脈,側脈旁具4-6(-8)痂體,或痂體不明顯;
雄蕊長3-5.5毫米,花絲鑽形;子房近上位,闊卵球形,長2.2-4.2毫米,花柱長0.5-1.5毫米。花果期7-10月。[2]
Saxifraga subaequifoliata Irmsch. in Not. Bot. Gard. Edinb. 18(90): 270. 1935; 雲南種子植物名錄上冊: 245. 1984.
Herbs perennial, 18.5-37 cm tall. Stem brown glandular pilose. Cauline leaves 10-13; proximal ones with petiole 0.3-3.3 cm, glandular pilose, gradually shorter to absent distally on stem; leaf blade ovate-cordate or ovate to narrowly so, 2.4-3.5 × 0.7-2.5 cm, ± glandular hairy, base cordate to rounded, apex subobtuse or acute. Pleiochasium paniculate, 3.2-14 cm, 6-30-flowered; most proximal branch 6-7 cm, 2- or 3-flowered; pedicels shortly dark brown glandular hairy. Sepals reflexed, ovate or broadly so to narrowly triangular-ovate, (1.1-)2.5-3 × 2-2.2(-4.8) mm, abaxially shortly glandular hairy, adaxially glabrous or distally sparsely glandular hairy, veins 3(-7), not confluent at apex, margin membranous, ± glandular ciliate, apex obtuse or acute. Petals yellow, purple spotted, usually ovate to elliptic, rarely broadly ovate to broadly elliptic, 4.5-6.8 × 2.6-3.6 mm, 4-6(-8)-callose or obscurely so, 3- or 4(-8)-veined, base contracted into a claw 0.5-1 mm, apex obtuse or acute. Stamens 3-5.5 mm. Ovary subsuperior, broadly ovoid, 2.2-4.2 mm; styles 0.5-1.5 mm. Fl. and fr. Jul-Oct.
- Forests, scrub meadows, alpine meadows, rock crevices; 3000-4200 m. W Sichuan (Daocheng Xian), SE Xizang (Mêdog Xian), NW Yunnan.
近等葉虎耳草生長環境
生長於海拔3 000-4 200米的針葉林下、灌叢草甸、高山草甸和岩坡石隙。模式標本采自雲南麗江西南部。[3]