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21. Polystichum sect. Adenolepia Daigobo, Sci. Rep. Tokyo Kyoiku Daigaku. B 15: 61. 1972.
假贯众耳蕨组 jia guan zhong er jue zu
Cyrtomium subser. Balansana Ching & K. S. Shing ex K. S. Shing.
Plants medium-sized. Lamina leathery, rarely papery, 1-pinnate. Rachis without proliferous bulbils. Pinnae falcate-lanceolate, length more than 3 × width, asymmetrical at base. Venation free or anastomosing to form 1 or 2 rows of areoles. Sori in 2 or more rows, rarely in 1 row, on each side of midrib.
About six species: Asia; six species (three endemic) in China.
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| 1 |
Venation free; sori in 1 row on each side of midrib |
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(2) |
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Venation anastomosing to form 1 or 2 rows of areoles; sori in 2 or more rows on each side of midrib |
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(3) |
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| 2 (1) |
Lamina papery; pinnae long spinulose on margin; veins distinct; microscales with glandlike apices. |
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153 P. formosanum |
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Lamina leathery; pinnae slightly spinulose on margin; veins indistinct; microscales without glandlike apices. |
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154 P. falcatilobum |
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| 3 (1) |
Pinnae much less asymmetrical at base, acroscopic bases nearly exauriculate. |
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155 P. hookerianum |
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Pinnae strongly asymmetrical at base, acroscopic bases strongly auriculate |
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(4) |
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| 4 (3) |
Pinnae rhombic-ovate. |
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156 P. trapezoideum |
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Pinnae broadly lanceolate |
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(5) |
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| 5 (4) |
Pinnae approximate, often with 1 row of areoles on each side of midrib; midrib strongly curved. |
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157 P. uniseriale |
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Pinnae distant from each other, often with 2 or 3 rows of areoles on each side of midrib; midrib substraight. |
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158 P. balansae |
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Lower Taxa
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