劍川虎耳草
劍川虎耳草 |
中文學名:劍川虎耳草 拉丁學名:Saxifraga smithiana Irmsch. 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 種:劍川虎耳草 分布區域:雲南省 |
劍川虎耳草(jiàn chuān hǔ ěr cǎo,學名:Saxifraga smithiana),為虎耳草科、虎耳草屬下的一個種。產雲南(劍川、碧江)。 [1]
目錄
劍川虎耳草形態特徵
多年生草本,高26-34厘米。莖中下部疏生褐色柔毛,最上部被褐色腺毛。
基生葉和莖下部葉早枯凋;中部以上莖生葉具柄(柄向上漸變短以至近無),葉葉心狀卵形至狹卵形,長1.1-2.7厘米,寬0.4-1.7厘米,先端稍漸尖;
基部心形至圓形,無毛或僅邊緣疏生褐色柔毛,葉柄長0.2-2.5厘米,邊緣疏生褐色柔毛。
單花生於莖頂,或聚傘花序長2.3-4.5厘米,具5-7花;花梗長0.7-1.3厘米,被褐色腺毛;萼片在花期反曲,近卵形,長3.3-4毫米,寬約2毫米,先端齧蝕狀,無毛或近無毛,4-5脈於先端不匯合;
花瓣黃色,具橙色斑點,橢圓形至闊橢圓形,長5.6-6.5毫米,寬3.3-4.8毫米,先端鈍圓,基部狹縮成長約0.8毫米之爪,3脈,側脈旁具6痂體;
雄蕊長約2.5毫米,花絲鑽形;子房近上位,闊卵球形,長約2.7毫米,花柱2,長約1.3毫米。花期8-9月。[2]
Saxifraga smithiana Irmsch. in Not. Bot. Gard. Edinb. 18(90) : 268. 1935.
Herbs perennial, 26-34 cm tall. Stem brown pilose proximally, brown glandular hairy distally. Basal and proximal cauline leaves caducous; distal cauline leaves with petiole 0.2-2.5 cm, gradually shorter distally on stem until nearly absent, brown pilose at margin; leaf blade cordate-ovate to narrowly ovate, 1.1-2.7 × 0.4-1.7 cm, glabrous or brown pilose only at margin, base cordate to rounded, apex subacuminate. Flower solitary or cyme 2.3-4.5 cm and 5-7-flowered; pedicels 0.7-1.3 cm, brown glandular hairy. Sepals reflexed, subovate, 3.3-4 × ca. 2 mm, glabrous or subglabrous, veins 4 or 5, not confluent at apex, apex erose. Petals yellow, orange spotted, elliptic to broadly so, 5.6-6.5 × 3.3-4.8 mm, 6-callose, 3-veined, base contracted into a claw ca. 0.8 mm, apex obtuse. Stamens ca. 2.5 mm. Ovary subsuperior, broadly ovoid, ca. 2.7 mm; styles ca. 1.3 mm. Fl. Aug-Sep.
- Alpine meadows, rock crevices on slopes; 3700-4000 m. NW Yunnan (Jianchuan Xian, Lijiang Naxi Zu Zizhixian).
劍川虎耳草生長環境
生於海拔3 700-4000米的高山草甸和岩坡石隙。[3]