Dryoathyrium erectum is a member of the genus Athyriopsis 1 WANG Ma-Li * 1, 2 XU Hao

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1 44 (2): (2006) Acta Phytotaxonomica Sinica doi: /aps * 1, ( ) 2 ( ) Dryoathyrium erectum is a member of the genus Athyriopsis 1 WANG Ma-Li * 1, 2 XU Hao 1 ZHENG Ling 1 (College of Life Sciences, and Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi an , China) 2 (Department of Biology, Shaanxi College of Technology, Hanzhong, Shaanxi , China) Abstract In order to determine the taxonomic relationship of Dryoathyrium erectum (Z. R. Wang) W. M. Chu & Z. R. Wang, characters of the fronds, hairiness, sori and spores in Dryoathyrium and Athyriopsis were comparatively investigated. The results have shown that D. erectum has unconspicuous grooves on the frondal rachis and costa, uniseriate articulate hairs on the plant and diplazioid sori. All these characters are present in the genus Athyriopsis but not in the genus Dryoathyrium. The spore morphology of D. erectum is more similar to that in Athyriopsis than in Dryoathyrium. Evidence from the chloroplast trnl-f sequences data also supports the inclusion of D. erectum in Athyriopsis. Therefore, D. erectum should be a member of Athyriopsis, and A. erectum Z. R. Wang is the correct name of this species. Key words Dryoathyrium, Dryoathyrium erectum, Athyriopsis, Athyriopsis erectum, spore morphology, taxonomy. Dryoathyrium erectum (Z. R. Wang) W. M. Chu & Z. R. Wang Dryoathyrium Athyriopsis, DNA trnl-f,, Athyriopsis erectum Z. R. Wang ; ; ; ; ; Athyriopsis erectum Z. R. Wang 1982, (1999) 3 2, Dryoathyrium Ching, Dryoathyrium erectum (Z. R. Wang) W. M. Chu & Z. R. Wang,, (, 2002); DNA trnl-f,, , : (03JK191)(Supported by the Natural Science Foundation of the Education Department of Shaanxi Province, Grant No. 03JK191) * (Author for correspondence. Tel.: ; Fax: ; mali_wang2000@sina.com)

2 2 : DNA trnl-f ( 1000 )(, 2003) Fig. 1. Tree obtained using the neighbor-joining method from the chloroplast trnl-f sequence data. Bootstrap values are indicated for the branches occurring in more than 50% of 1000 bootstrap replicates (Wang et al., 2003). Athyriopsis Ching (, 2003)( 1),, ,, ( 2: A) 1.3,,, ;,,, ( 2: B) ,, 20 1 Table 1 Comparison of leaf morphology in Dryoathyrium, Athyriopsis and D. erectum Leaf morphology Petiole length/lamina length Groove on the rachis and costa Dryoathyrium Athyriopsis D. erectum half or less than half half or more than half more than half conspicuous not conspicuous not conspicuous

3 (WNU) (PE)( 2) Table 2 Origin of materials, and spore morphology in 11 species and one variety of Athyriopsis, and in Dryoathyrium erectum from China Taxon Provenance Voucher Figure Dryoathyrium erectum (Z. R. Wang) W. M. Chu & Z. R. Wang Athyriopsis concinna Z. R. Wang A. conilii (Franch. & Sav.) Ching A. dickasonii (M. Kato) W. M. Chu A dimorphophylla (Koidz.) Ching ex W. M. Chu Size of spore (µm) A. jinfoshanensis Ching & Z. Y. Liu A. japonica (Thunb.) Ching ( ) A. japonica var. oshimensis (Christ) Ching A. kiusiana (Koidz.) Ching A. longipes Ching A. omeiensis Z. R. Wang A. pachyphylla Ching A. petersenii (Kunze) Ching Surface ornamentation of perine of spore long spinose Mt. Jinfoshan, (M. L. Wang) Chongqing 730 (WNU) Mt. Jinfoshan, (M. L. Wang) baculate, irregularly lobate and tuberculate Chongqing 730 (WNU) Mt. Tianmushan, (Y. T. Xie) baculate, tuberculate Zhejiang 7389 (WNU) and lophate baculate, lobate and lophate Sangzhi, Hunan (S. F. Wu) 781 (PE) baculate, S. Kurata 349 (PE) Without precise locality, Japan baculate and lobate Mt. Jinfoshan, Chongqing (Z. Y. Liu) 4402 (PE) baculate and lophate Kang Xian, (Y. P. Xu) Gansu 1003 (WNU) baculate and lophate Mt. Tianmushan, (Y. T. Xie) Zhejiang 7375 (WNU), M. Kido baculate and lobate 5318 (PE) Without precise locality, Japan baculate and lophate Kunming, Yunnan (T. N. Liou) (PE) baculate and lophate Mt. Emeishan, (Z. R. Wang) Sichuan 905 (PE) lobate baculate Mt. Wudangshan, (Y. T.Xie) Hubei 1488 (PE) Mt. Tianmushan, (X. Y. He) Zhejiang (PE) , , 16 17

4 2 : A. ( 730) B. ( 730) Fig. 2. Athyriopsis erectum Z. R. Wang. A, An articulate hair on the rachis (Photographed from M. L. Wang 730). B, Part of the pinna. The arrows indicate diplazioid sori (Photographed from M. L. Wang 730). A, 200; B, 3.5,, µm, µm,, 1/3 2/3,,,,,, ( 2), 2 3 (, 2002),, (, 2002),,, 2, Athyriopsis erectum in Acta Phytotax. Sin. 20: ; S. F. Wu in Journ. Wuhan Bot. Res. 12: ; et in W. T. Wang, Keys Vasc. Pl. Wuling Mt

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6 2 : , Figs SEM photographs of spores in five species of Athyriopsis. 12. A. kiusiana. 13. A. longipes. 14. A. omeiensis. 15, 16. A. pachyphylla. 17. A. petersenii. 12, 13, 17, 1700; 14, 2000; 15, 5000; 16, , Figs SEM photographs of spores in seven species of Athyriopsis and one in Dryoathyrium. 3. Dryoathyrium erectum. 4. Athyriopsis concinna. 5. A. conilii. 6. A. dickasonii. 7, 8. A. dimorphophylla. 9. A. jinfoshanensis. 10. A. japonica. 11. A. japonica var. oshimensis. 3, 5, 7, 1700; 4, 1500; 6, 2000; 8, 6000; 9, 2000; 10, 11, 1500.

7 Dryoathyrium erectum (Z. R. Wang) W. M. Chu & Z. R. Wang in Fl. Reip. Pop. Sin. 3: Type: China. Sichuan ( ): Mt. Emeishan ( ), alt m, , Z. R. Wang ( ) C64 (holotype, PE)., Chu W-M ( ), Wang Z-R ( ), Shieh Y-T ( ), He Z-R ( ) Athyriaceae. In: Flora Reipublicae Popularis Sinicae ( ). Beijing: Science Press. 3 (2): Wang Z-R ( ) Four new species of Athyriaceae from Emei Shan, Sichuan. Acta Phytotaxonomica Sinica ( ) 20: Wang M-L ( ), Lu S-G ( ), Zhao G-F ( ) Spore morphology of Dryoathyrium Ching from China. Acta Phytotaxonomica Sinica ( ) 40: Wang M-L ( ), Chen Z-D ( ), Zhang X-C ( ), Lu S-G ( ), Zhao G-F ( ) Phylogeny of the Athyriaceae: evidence from chloroplast trnl-f region sequences. Acta Phytotaxonomica Sinica ( ) 41: