《中国植物志》|| 蹄盖蕨科 ATHYRIACEAE ||冷蕨属 Cystopteris Bernh. ||藏冷蕨 Cystopteris tibetica Z. R. Wang
9. 藏冷蕨(植物分类学报)
Cystopteris tibetica Z. R. Wang in Acta Phytotax. Sin. 32 (1): 85, t. 1, f. 7. 1994 et in W. T. Wang, Vasc. Pl. Hengduan Mount. 1: 68. 1993, nom. seminud.
根状茎细长横走,直径1.5-2毫米,和叶柄基部同被褐色柔毛及少数膜质鳞片;叶远生。能育叶长15-20厘米;叶柄长6-14厘米,直径1-1.5毫米,禾秆色,基部带褐色,被褐色柔毛及少数阔卵形或卵状披针形鳞片;叶片三角状卵形,长6-11厘米,宽3-5毫米,渐尖头,三回羽状;羽片8-10对,互生,基部一对近对生,斜向上,基部一对羽片最大,长圆形或卵状披针形,长3-5厘米,宽1.2-1.5厘米,先端渐尖,基部稍变狭,不对称,柄长1.5-3毫米,二回羽状,距第二对羽片1.2-3厘米,第二对羽片和第一对同形,略小,顶部羽片披针形;一回小羽片6-8对,上先出,通常羽轴上侧的较下侧的略短,羽轴下侧第二片小羽片最大,三角状卵形,长6-8毫米,宽4-5毫米,钝头,基部偏斜,上侧和羽轴平行,下侧阔楔形,边缘有锯齿,有极短柄,互生,羽状浅裂至全裂;末回小羽片或裂片3对左右,小羽轴基部上侧一片最大,卵形,长圆形或倒卵形,长2-3厘米,宽1.5-2毫米,先端钝,基部楔形,与小羽轴以狭翅相连或几分离,边缘有浅锯齿,上部末回裂片斜方形或短线形,仅上侧及先端有锯齿。叶脉两面可见,小脉一至数回羽状分枝,顶端伸达锯齿之间的缺刻或微凹处。叶上下两面被有许多短腺毛,干后薄草质,绿色。孢子囊群小,圆形,每末回裂片上1-2枚,生于主脉上侧的小脉背上,羽片基部上侧的小羽片常有3-4枚;囊群盖近圆形或半杯形,灰褐色,往往具少数头状腺体,幼时覆盖孢子囊群,成熟时被孢子囊群压在下面。
分布于云南(德钦)和西藏(察隅、林芝、米林)。生于高山山坡针叶林下湿处、水沟边、石上或树干上,海拔2400-3600米。锡金也有。模式标本采自西藏(米林)。
本种形体近宝兴冷蕨 C. moupinensis Franch.,但叶片上下两面具有许多短腺毛,囊群盖背上亦有短腺毛。
数据来源 中国植物物种信息数据库
《Flora of China》|| Cystopteridaceae || Cystopteris ||藏冷蕨 Cystopteris tibetica
8. Cystopteris tibetica Z. R. Wang, Acta Phytotax. Sin. 32: 85. 1994.
藏冷蕨 zang leng jue
Rhizomes long creeping, 1.5-2 mm in diam., rhizome and stipe base clothed with brown hairs and few membranous scales. Fronds distant; fertile fronds 15-20 cm; stipe brownish at base, upward stramineous, 6-14 cm, 1-1.5 mm in diam., base clothed with brown hairs and few broadly ovate or ovate-lanceolate scales; lamina 3-pinnate, deltoid-ovate, 6-11 × 3-5 cm, acuminate; pinnae 8-10 pairs, alternate, basal pinnae subopposite, 1.2-3 cm apart from second basal pinnae, ascending, largest, oblong or ovate-lanceolate, 3-5 × 1.2-1.5 cm, base slightly narrowed and inequilateral, with stalk 1.5-3 mm, apex acuminate; upper pinnae lanceolate; pinnules 6-8 pairs, anadromous, alternate, acroscopic one usually slightly shorter than basiscopic one, second basal basiscopic pinnules largest, deltoid-ovate, 6-8 × 4-5 mm, inequilateral at base, acroscopic base parallel to costae, basiscopic base broadly cuneate, very shortly stalked, toothed, apex obtuse; secondary pinnules or pinnule segments ca. 3 pairs, basal acroscopic largest, ovate, oblong, or obovate, 2-3 × 1.5-2 cm, base cuneate and adnate to costular wing or partly separate, serrate, apex obtuse; upper segments rhomboid or shortly linear, only acroscopic side and apices toothed; veins visible on surfaces, pinnate, terminating in emarginations. Fronds thinly herbaceous when dried, green, clothed with short glandular hairs on both surfaces. Sori small, orbicular, 1 or 2 sori per ultimate segment, abaxial on suprabasal veins; indusia pale brown, orbicular or shallowly cupular, frequently with few glands, covering sporangia when young, hidden at maturity.
● Alpine slopes, damp areas in coniferous forests, streamsides, on rocks and tree trunks; 2400-3600 m. Xizang, Yunnan.
Cystopteris tibetica is similar to C. moupinensis, but the lamina has short glandular hairs on both surfaces and the indusia also has short glandular hairs.
数据来源 eFloras.org