《中国植物志》|| 水龙骨科 POLYPODIACEAE ||水龙骨属 Polypodiodes Ching ||假友水龙骨 Polypodiodes subamoena (C. B. Clarke) Ching

8.假友水龙骨（西藏植物志）亚友水龙骨（横断山区维管植物）图版4：4-6
Polypodiodes subamoena (C. B. Clarke) Ching in Acta Phytotax. Sin. 16 (4): 27. 1978; Ching et al., in C. Y. Wu, Fl. Xizang. 1: 294. pl. 71. f. 1-3. 1983. ——Polypodium subamoenum C. B. Clarke in Trans. Linn. Soc. London, ser. 2. 1: 550. pl. 82. f. 2. 1880; Christ in Bot. Gaz. 51: 340. 1911; C. Chr. in Acta Horti Gotoburg. 1: 99. 1924; Ching in Contr. Inst. Bot. Nat. Acad. Peiping 2 (3): 47. 1933; Bir in Trikha et Vasudeva, New Bot. 1: 148. 1974; Shing in W. T. Wang, Vasc. Pl. Hengduan Mts. 1: 161. 1993. ——Goniophlebium subamoenum (C. B. Clarke) Bedd., Handb. 317. 1883; Rodl-Linder in Blumea 34 (2): 411. 1990.
附生植物。根状茎长而横走，密被鳞片，连同鳞片粗约2-3毫米；鳞片卵状披针形，棕色或褐棕色，基部阔，盾状着生，顶端渐尖，边缘近全缘。叶远生；叶柄长约5-10厘米，禾秆色，光滑无毛；叶片披针形或卵状披针形，长约15-20厘米，宽约5-8厘米，羽状深裂，基部收缩，心形，顶端尾尖或羽裂渐尖；裂片约10-15对，最多可达20对，条形，长约3-4厘米，宽约8-10毫米，顶端钝圆或短渐尖，边缘有重锯齿或粗锯齿，基部1对明显缩短并向后反折。叶脉明显，网状，在叶轴两侧及裂片中脉两侧各具1-2行网眼，裂片两侧的内行网眼具内藏小脉。叶草质，干后绿色，两面无毛，表面光滑，背面疏被阔卵形、褐色、边缘有齿的鳞片。孢子囊群大，圆形，在裂片中脉两侧各1行，着生于内藏小脉顶端，靠近中脉着生，无盖。
产云南、西藏。附生树干上和石上，海拔2400-3300米。尼泊尔、锡金也有分布。模式标本采自锡金。

《Flora of China》|| Polypodiaceae || Polypodiodes ||假友水龙骨 Polypodiodes subamoena

8. Polypodiodes subamoena (C. B. Clarke) Ching, Acta Phytotax. Sin. 16(4): 27. 1978.

假友水龙骨 jia you shui long gu

Polypodium subamoenum C. B. Clarke, Trans. Linn. Soc. London, Bot. 1: 550. 1880; Goniophlebium subamoenum (C. B. Clarke) Beddome.

Rhizome long creeping, 2-3 mm in diam., densely covered with scales; scales brown or dark brown, ovate-lanceolate, broad at base, peltate, margin entire, apex acuminate. Fronds remote. Stipe stramineous, 5-10 cm, glabrous. Lamina pinnatipartite, ovate-lanceolate in outline, 15-20 × 5-8 cm, base cordate, apex caudate. Segments 10-15(-20) pairs, linear, 3-4 cm × 8-10 mm, margin double-serrate, apex obtuse or acute; lowest pairs shorter and deflexed. Veins visible, anastomosing to form 1 row of areoles along rachis and 1 or 2 rows of areoles on each side of costa, costal areoles containing a simple included veinlet. Lamina herbaceous, green, abaxial surface scaly, adaxial surface glabrous. Sori orbicular, in 1 row on each side of costa, terminal on included veinlets, close to costa.

Epiphytic on tree trunks or on rocks; 2400-3300 m. Xizang, Yunnan [N India, Nepal].

Polypodium intermedium Ching & S. K. Wu ex K. H. Shing (Acta Phytotax. Sin. 31: 574. 1993 ["intermeldium"]), described from Yunnan, was compared in the protologue with P. subamoenum (Polypodiodes subamoena).