学名(拉丁名) | Tectaria media |
中文名 | 中形叉蕨 |
命名人 | Ching |
中文科名 | 叉蕨科 |
拉丁属名 | Tectaria |
类型 | species |
拉丁科名 | Aspidiaceae |
中文属名 | 叉蕨属 |
学名(拉丁名) | Tectaria media |
命名人 | Ching ex Ching & Wang (accepted name) |
拉丁属名 | Tectaria |
类型 | species |
拉丁科名 | Tectariaceae |
学名(拉丁名) | Tectaria media |
命名人 | Ching |
发表年份 | 1959(年) |
拉丁属名 | Tectaria |
类型 | species |
拉丁科名 | Tectariaceae |
学名(拉丁名) | Tectaria media |
中文名 | 中型叉蕨 |
拉丁属名 | Tectaria |
类型 | species |
拉丁科名 | Tectariaceae |
学名(拉丁名) | Tectaria media |
中文名 | 中形叉蕨 |
中文科名 | 叉蕨科 |
拉丁属名 | Tectaria |
类型 | species |
拉丁科名 | Tectariaceae |
中文属名 | 三叉蕨属 |
学名(拉丁名) | Tectaria media |
发表年份 | 1959(年) |
拉丁属名 | Tectaria |
类型 | species |
拉丁科名 | Tectariaceae |
Plants terrestrial, ca. 60 cm tall. Rhizome ascending or erect, short, densely scaly at apex and stipe bases; scales linear-lanceolate, 3-4 mm, thickly membranous, margins entire, apices acuminate. Fronds clustered; stipe dark brown to castaneous, glossy, 35-40 cm, 3-4 mm in diam. at base, grooved above, sparsely pubescent at base. Lamina bipinnatifid at base, pinnate upward, light brown when dried, deltoid, ca. 30 × 25 cm; terminal pinna trifurcate, ovate-deltoid, ca. 18 × 5-6 cm, papery, both surfaces glabrous, base rounded, margins lobed, apex acuminate; rachises castaneous, pubescent adaxially, glabrescent abaxially; costae castaneous at base, stramineous upward, densely hairy adaxially, glabrescent abaxially; terminal lobe ovate-lanceolate, lobed, basal lateral lobes longer, ca. 8 cm, falcate-lanceolate, opposite; lateral pinnae 2 pairs, opposite, slightly oblique, interval 2-3 cm, stalks ca. 2 cm, lateral pinnae subsessile upward; basal pinnae largest, deltoid, pinnatifid, ca. 18 × 12 cm, bases cordate, apices long acuminate, lobes falcate-lanceolate, undulate to slightly lobed; middle pinnae broadly falcate-lanceolate, ca. 15 × 3.5 cm, bases cuneate, margins undulate to slightly lobed, apices acuminate. Veinlets forming subhexagonal areoles with cross veins, raised on both surfaces, included veinlets simple or forked. Sori small, orbicular, located at coupling veinlets, in irregular rows between adjacent lateral veins; indusia small, brown, membranous, persistent.
Dense forests; ca. 700 m. Fujian, Guangdong, Guangxi, Hainan.
24.中形叉蕨(植物分类学报)
Tectaria media Ching in Acta Phytotax. Sinica 8 (2): 150, t. 22, f. 27. 1959; Ching et al. in Chun et al. Fl. Hainan, 1: 160. 1964.
植株高约60厘米。根状茎未见。叶柄长35-40厘米,基部粗3-4毫米,紫栗褐色,上面有浅沟,基部疏被有关节的淡棕色毛及鳞片;鳞片线状披针形,长3-4毫米,先端渐尖,全缘,厚膜质,棕色;叶片三角形,长约30厘米,基部宽约25厘米,一回羽状;顶生羽片卵状三角形,三叉,长约18厘米,中部宽5.5-6厘米,先端渐尖,基部浑圆,边缘有浅圆裂片,基部两侧各有一镰状披针形长约8厘米的裂片;侧生羽片2对,对生,稍斜向上,间隔2-3厘米,基部一对的柄长约2厘米,第二对近无柄;基部一对羽片三角形,长约18厘米,基部宽约12厘米,先端长渐尖,基部浅心脏形,其两侧有1对镰状披针形的斜展裂片,边缘有浅圆裂片;第二对羽片镰状阔披针形,长约15厘米,基部宽约3.5厘米,先端长渐尖,基部截形而两侧不对称,其外侧稍为耳形,边缘有波状的浅圆裂片。叶脉联结成近六角形网眼,两面均稍隆起,有单一或分叉的内藏小脉;侧脉禾秆色,上面不明显,下面隆起而稍曲折并疏被有关节的淡棕色短毛。叶纸质,干后淡褐色,两面均光滑;叶轴紫栗褐色,上面有浅沟并密被有关节的淡棕色短毛,下面光滑;羽轴基部紫栗褐色,向上部禾秆色,上面密被有关节的淡棕色毛,下面几光滑。孢子囊群圆形,生于小脉联结处,在侧脉间有不规则的多行;囊群盖圆盾形,膜质,锈棕色,宿存。
特产海南(陵水,尖山)。生山谷林下。