Taxonomic and nomenclatural notes on Philippine ferns. I. The identity of Asplenium anisodontum C.Presl (Aspleniaceae)

A E Salgado

doi:10.1017/s0960428600002900

Abstract

The synonymy of Asplenium unisodontum C.Presl (Aspleniaceae) in the Philippines is clarified. Asplenium anisodontum C.Presl. A. longissimum Blume and A. caudatum G.Forst. are different species. A. anisodontum C.Presl and A. longissimum Blume are both found in the Philippines. The presence of Asplenium cuudatum G.Forst. in the Philippines is doubtful. Asplenium acutiusculum Blume is the same as A. longissimum Blume and the latter name should be accepted.

Highlights

In studying the taxonomic history of Philippine Aspleniaceae, it became clear that the synonymy of several species is confusing and in need of clarification
Copeland (1960) states in his Fern Flora of the Philippines that Asplenium anisodontuni C.Presl has been considered by some modern authors to be the same as Asplenium aeutiusculum Blume
The name of Asplenium caudatum G.Forst., as it has been commonly used for Asian and Malesian plants, represents a group of species, and needs further study. It can be concluded from the above observations that Asplenium anisodontum C.Presl is a distinct species, different from A. longissimum Blume and from A. caudatum G.Forst

Summary

INTRODUCTION

In studying the taxonomic history of Philippine Aspleniaceae, it became clear that the synonymy of several species is confusing and in need of clarification. The holotype of A. longissimum Blume consists of a single sheet with a fertile frond section (the rhizome and stipe are missing), from Borneo, and without a collection number. The holotype of Asplenium acutiusculum has Blume's name on it but no collection number It consists of a single sheet with five sections of the lamina, without stipe or rhizome. At BM there is a sheet with a section of frond, labelled 'Asplenium longissimum' and marked 'TYPE'. Blume's name is on it but the collector is unknown; it is from the Kuching Hills, Sarawak, Borneo, and is dated 2 March 1914 This plant agrees with the Leiden type specimens of A. acutiusculum and A. longissimum. Asplenium anisodontum (Cuming 128) duplicates are readily distinguishable from Asplenium longissimum Blume by the length of the frond and the lamina apex.

Acroscopic basal lobe Sori

DISTRIBUTION AND ECOLOGY

CONCLUSIONS