Tectaria multicaudata (C.B.Clarke) Ching (1931: 20)

Ding, Hui-Hui, Chao, Yi-Shan & Dong, Shi-Yong, 2013, Taxonomic novelties in the fern genus Tectaria (Tectariaceae), Phytotaxa 122 (1), pp. 61-64 : 62-63

publication ID	https://doi.org/10.11646/phytotaxa.122.1.3
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treatment provided by	Felipe (2021-07-09 12:42:27, last updated by Plazi 2023-11-03 07:15:49)
scientific name	Tectaria multicaudata (C.B.Clarke) Ching (1931: 20)
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Tectaria multicaudata (C.B.Clarke) Ching (1931: 20) .

Basionym:— Nephrodium multicaudatum Clarke (1880: 540) . Type :— BANGLADESH. Sylhet, 30 November 1887, Clarke 18427 (holotype K!) .

Ξ Tectaria griffithii auct . non (Baker) Christensen (1934: 180), Holttum (1991a: 54), pro parte, excluding the type of T. griffithii .

= Tectaria griffithii var. singaporeana Holttum (1991b: 551) , syn. nov. Type :— SINGAPORE. Bukit Timah, January 1908, Matthew s.n. (holotype K!).

Note:—As stated above, Tectaria multicaudata is a separate species from T. griffithii . They are distinct in the venation pattern, i.e., costal and costular areoles are present in T. multicaudata but absent in T. griffithii ( Fig. 1 View FIGURE 1 ).

Holttum (1991b) proposed two varieties under his misunderstood Tectaria griffithii , i.e., T. griffithii var. singaporeana and T. griffithii var. amplissima , both having costal and costular areoles of veins. The only difference between the two varieties is “veins all free in lobes of fertile pinnae” in “ T. griffithii var. singaporeana ” but “veins amply anastomosing in fertile fronds” in “ T. griffithii var. amplissima ” ( Holttum 1991b). When carefully comparing a large number of specimens of T. multicaudata in herbaria, we found the form of veins of “ T. griffithii var. singaporeana ” falling within the variation range of veins of T. multicaudata . Therefore we propose to include T. griffithii var. singaporeana in T. multicaudata . The holotype of the second variety, T. griffithii var. amplissima , however, represents a distinct taxon, which is transferred to T. multicaudata as a variety.

Tectaria malayensis ( Christ 1907: 187) Copeland (1907: 416) was submerged by Holttum (1991a) under his misapplied T. griffithii . It was based on a collection from Luzon (Loher 858, K!) with the same venation pattern of T. multicaudata . If T. malayensis will be eventually proved to be a synonymous name, it should be reduced to T. multicaudata instead of T. griffithii .

References

Ching, R. - C. (1931) The studies of Chinese ferns VII, a revision of the genus Tectaria from China and Sikkim-Himalaya. Sinensia 2: 9 - 36.

Christ, H. (1907) Spiciligium filicum Philippinensium novarum aut imperfecte cognitarum. The Philippine Journal of Science 2: 153 - 188.

Christensen, C. (1934) Index Filicum, Supplement tertium. H. Hagerup, Copenhagen, 219 pp.

Clarke, C. B. (1880) A revision of the ferns of northern India. The Transactions of the Linnean Society of London II, Botany 1: 425 - 611.

Copeland, E. B. (1907) A revision of Tectaria with special regard to the Philippine species. The Philippine Journal of Science 2: 409 - 418.

Holttum, R. E. (1991 a) Flora Malesiana, series II, Pteridophyta, vol. 2, part 1, Tectaria group. Rijksherbarium / Hortus Botanicus, Leiden, 132 pp.

Holttum, R. E. (1991 b) New taxa in the Tectaria group (Polypodiaceae) from Malesia. Blumea 35: 547 - 557.

Figures

FIGURE 1. Comparison of the venation between Tectaria griffithii (Baker) C.Chr. (a) and T. multicaudata (C.B.Clarke) Ching (b). a) Portion of a pinnule on basal pinna, based on the holotype of T. griffithii (Griffith s.n., K); b) portion of a pinnule on basal pinna, based on the holotype of T. multicaudata (Clarke 18427, K).