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6. Angiopteris tonkinensis (Hayata) J. M. Camus, Proc. Int. Symp. Syst. Pterid. 34. 1989.
尖叶莲座蕨 jian ye lian zuo jue
Protomarattia tonkinensis Hayata, Bot. Gaz. 67: 88. 1919; Archangiopteris tamdaoensis Hayata; A. tonkinensis (Hayata) Ching; Protangiopteris tamdaoensis (Hayata) Hayata.
Fronds 50-85 cm; stipes 40-45 cm, with 1 naked pulvinus. Laminae once pinnate; pinnae 2-4 alternate pairs, elliptic, 20-25 × 4-5 cm, bases cuneate, margins sharply serrate, apices caudate. Veins obvious, false veins absent. Sori medial, 0.7-1 cm; paraphyses shorter than sporangia. Exospores with rodlike ornamentation.
Hainan [N Vietnam].
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