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4. Dryopteris sect. Dryopteris
平鳞鳞毛蕨组 ping lin lin mao jue zu
Filix Séguier (1754), not Ludwig (1757), nor Adanson (1763).
Lamina once pinnate; pinnae deeply pinnatifid to bipinnate. Abaxial surface of costa clothed with flat, lanceolate, fimbriate scales.
About 20 species: widespread in the N temperate zone; 12 species (five endemic) in China.
The following species, recorded from Xizang (Fraser-Jenkins, New Sp. Syndr. Indian Pteridol. 138. 1997) and Taiwan (Knapp, Ferns Fern Allies Taiwan, 171, 453. 2011), is not treated here because no material was seen by the present authors: Dryopteris edwardsii Fraser-Jenkins (New Sp. Syndr. Indian Pteridol. 138. 1997; 爱德华鳞毛蕨 ai de hua lin mao jue). According to the protologue, this species is similar to D. lepidopoda but has broader stipe and rachis scales, longer lower basiscopic pinnules of lower pinnae, and larger spores. The chromosome number is 2n = 123. It is found in mixed forests with Cedrus deodara and species of Quercus at 2800-3100 m. Described from India, it is also recorded from Nepal and Pakistan.
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| 1 |
Basal pairs of pinnae not tapered, ?same length of medial |
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(2) |
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Basal pairs of pinnae tapered or gradually so, ca. 1/2 length of medial |
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(5) |
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| 2 (2) |
Rhizome creeping, with aristate teeth at their apices. |
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42 D. monticola |
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Rhizome erect or ascending |
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(3) |
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| 3 (2) |
Stipe with linear-lanceolate or narrowly lanceolate scales. |
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43 D. lepidopoda |
| + |
Stipe with broadly lanceolate or lanceolate scales |
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(4) |
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| 4 (3) |
Scales on stipe and rachis brown or dark brown. |
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44 D. montigena |
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Scales on stipe and rachis black. |
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45 D. latibasis |
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| 5 (1) |
Lamina bipinnate, pinnules lanceolate |
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(6) |
| + |
Lamina once pinnate, pinnatifid, or pinnatisect |
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(7) |
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| 6 (5) |
Lamina ovate, rachis sparsely clothed with pale brown scales. |
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46 D. yungtzeensis |
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Lamina oblanceolate, rachis densely clothed with pale brown scales. |
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47 D. habaensis |
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| 7 (5) |
Scales on rachis castaneous or dark brown |
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(8) |
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Scales on rachis brown or red-brown |
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(10) |
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| 8 (7) |
Scales on rhizome apex to rachis black. |
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52 D. rosthornii |
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Scales on rhizome apex brown, those on rachis brown to castaneous |
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(9) |
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| 9 (8) |
Stipe and rachis with sparse short lanceolate scales. |
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53 D. neorosthornii |
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Stipe and rachis with dense long linear-lanceolate scales. |
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50 D. wallichiana |
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| 10 (7) |
Ultimate segments incised or crenate, sparsely clothed with narrow hairlike scales on abaxial surface of pinnae |
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(11) |
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Ultimate segments entire or subentire, densely clothed with narrow hairlike scales on abaxial surface of pinnae |
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(12) |
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| 11 (10) |
Lamina thinly papery, pinnae 2-3 cm wide, pinna lobes with obtuse pointed apices; sori and indusium small. |
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48 D. coreano-montana |
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Lamina papery, pinnae 1.5-2 cm wide, pinna lobes with rounded apices; sori and indusium large. |
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49 D. filix-mas |
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| 12 (10) |
Lamina leathery or thinly leathery, apices of ultimate segments with cartilaginous edges. |
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50 D. wallichiana |
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Lamina herbaceous, apices of ultimate segments without cartilaginous edges. |
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51 D. crassirhizoma |
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List of lower taxa
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