29a. Pteris ensiformis var. ensiformis
剑叶凤尾蕨(原变种) jian ye feng wei jue (yuan bian zhong)
Pteris crenata Swartz; P. serrulata Forsskål var. obtusata Christ; P. stricta Poiret.
Pinnae bipinnate, 3-6 pairs, 2.5-3.5(-8) cm, fertile pinnae often 2- or 3-forked.
Wet acidic soils beneath forests, streamsides; 100-1000 m. Chongqing, Fujian, Guangdong, Guangxi, SW Guizhou (Anlong), Hainan (Nanshanling, Sanya), S Jiangxi, Sichuan (Emei Shan, Yaan), Taiwan, S Yunnan, S Zhejiang (Pingyang) [Cambodia, N India, Japan (Ryukyu Islands), Laos, Malaysia, Myanmar, Sri Lanka, Vietnam; Australia, Pacific islands (Fiji, Polynesia)].
The plants are indicators of acidic soils, with a pH of 4.5-5.0.
