长叶瓦莲
长叶瓦莲 |
中文学名:长叶瓦莲 拉丁学名:Rosularia alpestris (Kar. et Kir.) A. Bor. 二名法:Rosularia alpestris 界:植物界 门:木贼门 亚 门:木贼亚门 纲:木兰纲 亚 纲:蔷薇亚纲 目:虎耳草目 科:景天科 亚 科:长生草亚科 族:景天族 属:瓦莲属 种:长叶瓦莲 中国分布于西藏西南部及 组:Ornithogalopsis |
长叶瓦莲(cháng yè wǎ lián,学名 Rosularia alpestris (Kar. et Kir.) A. Bor.),是虎耳草目、景天科瓦莲属的草本植物,也是多肉植物的一种。 [1]
目录
长叶瓦莲形态特征
多年生草本。根肥大。花茎自莲座叶腋发出,直立或斜上,有 长叶瓦莲开花 叶,无毛,高5-12厘米,叶肉质,扁平,先端边缘上有糙毛状缘毛,叶上面无毛;
基生叶莲座状,长圆状披针形或长圆形,长1.5-2.5厘米,宽3-6毫米,先端渐尖,莲座直径1.5-3厘米;茎生叶无柄,长圆形或长圆状披针形,渐尖。
聚伞花序伞房状或圆锥花序伞房状;花梗较花冠为短,或顶部的花有长花梗;苞片小,卵状披针形;萼片6-8,披针形,急尖或渐尖,无毛,有3脉,为花冠之半;
花瓣6-8,基部合生,白色或浅红色,在外面龙骨状突起为紫色或红色,长圆状披针形,长6-9毫米,先端急尖,有3脉,反折;雄蕊12-16,较花瓣短;鳞片横宽近半圆形,先端截形或圆,全缘。
蓇葖有喙丝状,长 1毫米;种子多数,卵形,长不及1毫米,褐色。花期6-7月。 [2]
分类
Rosularia alpestris (Kar. et Kir.) A. Bor. in, Kom. Fl. URSS. 9: 129. 1939; H. Ohba in Journ. Jap. Bot. 52: 3. 1977; id. in Journ. Fac. Sci. Univ. Tokyo III. 12: 341. f. la-g. 2, 3. 1980.——Umbilicus alpestris Kar. et Kir. in Bull. Soc. Nat. Mosccu 15: 354. 1842.——Sempervivum acuminatum Decne. in Jacq. Voy. Bot. t. 74. f. 1. 1844.——Sedum umbilicoides Regel in Acta Hort. Petrop, 5: 263. 1877; Frod. in Acta Hort. Gothob. 6. Append.: 29. 1931.——Sedum olgae Regel et Schmalh ex Regel, Descr. Plant. Nov. 24 (2) : 26. 1882; Frbd. in Acta Hort. Gothob. 6. Append. : 30. pl. 16, 1931.-----Sedum durisii Hamet in Bull. Soc. Bot. France 60: 447. 1913; Frad. in Acta Hort. Gothob. 6. Append. : 30. pl. 17. f. 207-214. 1931.——Sempervivella acuminrata (Decne. ) Berger in Engl. et Prantl, Nat. Pflanzenfam. 2. Aufl. 18a: 467. 1930.——Sedum schlagiutweitii Frod. in Acta Hort. Gothob. 6. Append. : 28. 1931. ——Rhodiola durisii (Hamet) S. H. Fu, 植物分类学报增刊1: 118, 1965.
英文介绍
Umbilicus alpestris Karelin & Kirilov, Bull. Soc. Imp. Naturalistes Moscou 15: 354. 1842; Rhodiola durisii (Raymond-Hamet) S. H. Fu; Sedum durisii Raymond-Hamet; S. olgae Regel & Schmalhausen ex Regel; S. schlagintweitii Fröderström; S. umbilicoides Regel; Sempervivella acuminata (Decaisne) A. Berger; Sempervivum acuminatum Decaisne.
Rootstock to 1.5 cm thick. Rosette 1.5-3 cm in diam.; rosette leaves oblong-lanceolate to oblong, (9-)15-25(-30) × (2-)3-6 mm, glabrous or very sparsely glandular, apex acuminate. Flowering stem axillary from rosette leaves, erect or ascending, 5-12(-15) cm, leafy, glabrous; stem sessile, oblong to oblong-lanceolate, leaves flat, 5-10 × 2-2.5 mm, adaxially glabrous, margin hispidulous-ciliate distally, apex acuminate. Inflorescences cymose-corymbiform, 2-12(-20)-flowered, glabrous; bracts small, ovate-lanceolate. Flowers 6-8-merous; pedicel shorter than corolla on proximal flowers but elongating on distal ones. Sepals lanceolate, ca. 1/2 as long as corolla, glabrous, veins 3, apex acute to acuminate. Corolla white, or reddish with purple or red abaxial keel, 6-9 mm; lobes basally connate, oblong-lanceolate, veins 3, apex reflexed and acute. Stamens 12-16, shorter than corolla. Nectar scales suborbicular. Follicles 2.5-3.5 mm, apex beaked; beak filiform. Seeds numerous, ovoid. Fl. Jun-Jul.
Scrub-covered slopes, rock crevices; 1500-5000 m. Xinjiang, Xizang [Russia].