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13. Polystichum sect. Macropolystichum Daigobo, Sci. Rep. Tokyo Kyoiku Daigaku. B 15: 61. 1972.
深绿耳蕨组 shen lü er jue zu
Polystichum sect. Prionolepia Daigobo.
Plants medium-sized to large, evergreen. Lamina often bipinnate, occasionally 1-pinnate to bipinnatifid, broadly lanceolate, ovate-lanceolate, or narrowly deltoid, thinly leathery or leathery, often with 1 or 2 proliferous bulbils toward rachis tip, occasionally with 1 proliferous bulbil toward apex tip of pinna rachis, some species without bulbils on rachis. Scales dimorphic to trimorphic, stipe often covered with dimorphic scales, base densely covered with large scales; large scales ovate, narrowly ovate or ovate-lanceolate, mixed with lanceolate to linear-lanceolate small scales, upper stipe and rachis covered with small scales, with few large scales; scales brown, thickly membranous, middle part often thickened and bright blackish brown; microscales light brown, small, subulate, basal part fimbriate, thinly membranous, often sparse on pinnae and pinnules abaxially. Sori often small, indusia small, easily falling off when mature.
About 17 species: tropical Asia and subtropical mountains, individual species widely distributed, north up to S Japan (Yakushima Island), some species west up to NW India, S Himalayan slopes; 14 species (six endemic) in China.
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| 1 |
Rachis without proliferous bulbils |
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(2) |
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Rachis with proliferous bulbils |
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(7) |
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| 2 (1) |
Microscales lanceolate; sori abaxial on veinlets |
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(3) |
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Microscales filiform; sori terminal on veinlets |
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(4) |
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| 3 (2) |
Stipe scales up to 3 cm; pinnae 16-27 pairs. |
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73 P. mucronifolium |
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Stipe scales shorter than 2 cm; pinnae 8-17 pairs. |
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74 P. biaristatum |
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| 4 (2) |
Lamina acuminate and sterile at apex. |
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75 P. oreodoxa |
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Lamina cuspidate at apex |
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(5) |
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| 5 (4) |
Rachis with linear scales; lamina fertile at apex; pinnules oblong and falcate-oblong. |
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78 P. longipinnulum |
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Rachis with lanceolate scales at least at base of pinna rachis |
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(6) |
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| 6 (5) |
Lamina sterile at apex; pinnules deltoid-ovate or oblong. |
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76 P. semifertile |
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Lamina fertile at apex; pinnules narrowly deltoid-ovate. |
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77 P. fugongense |
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| 7 (1) |
Lamina 1-pinnate to bipinnatifid |
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(8) |
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Lamina bipinnate |
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(9) |
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| 8 (7) |
Lamina broadly lanceolate, nearly dimorphic, fertile lamina smaller; stipe scales with irregular teeth, teeth often forked or irregularly pinnately branching. |
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65 P. prionolepis |
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Lamina narrowly oblong-lanceolate, obviously monomorphic; stipe scales with regular simple teeth. |
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66 P. lentum |
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| 9 (7) |
Lamina 1-pinnatifid to pinnatisect |
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(10) |
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Lamina fully bipinnate |
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(12) |
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| 10 (9) |
Stipe scales brown; pinnules with microscales linear adaxially; rachis with 2 bulbils. |
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67 P. bigemmatum |
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Stipe scales mostly castaneous, at least castaneous at center; pinnules glabrous adaxially; rachis with 1(or 2) bulbils |
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(11) |
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| 11 (10) |
Pinnules and lobes of lower pinnae broadly rhombic-ovate or obovate, cuspidate aristate-spinulose. |
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68 P. chunii |
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Pinnules and lobes of lower pinnae ovate or oblong, obtuse-acuminate to long acuminate. |
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69 P. attenuatum |
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| 12 (9) |
Lamina nearly dimorphic, pinnae and pinnules of fertile fronds narrower and smaller; sori coenosori when mature, fully covering abaxial surface of pinnules. |
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70 P. pycnopterum |
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Lamina monomorphic; sori not coenosori when mature |
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(13) |
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| 13 (12) |
Pinnules shortly aristate-spinulose at apex and on distal margins. |
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71 P. disjunctum |
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Pinnules not aristate-spinulose, shallowly toothed, incised to repand on margin. |
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72 P. scariosum |
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List of lower taxa
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