Sphaerostephanos unitus var. unitus

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Sphaerostephanos unitus var. unitus


Hairs on both sides of rachis less than 1 mm long.


Asia-Tropical: Jawa (Jawa present); Malaya present; Sumatera (Sumatera present); Thailand (Thailand present), Burma present, Ceylon present, E. Africa present, Guam present, Lesser Sunda Is present, Luzon present, Mindanao present, N. Queensland present, N.E. India present, S. India present, S.W. Celebes present, W. New Guinea present
E. Africa; Mascarene Islands; Ceylon&S. India; N.E. India, Burma&Thailand (few specimens); Malesia (Malaya, Sumatra, Java, S.W. Celebes, Lesser Sunda Is., few specimens from Luzon and Mindanao, 1 from W. New Guinea); Guam, N. Queensland.


The identity of this species is fixed by the type. Linnaeus's description is not adequate, and his references to plants from Asia all indicate the species here named Cyclosorus interruptus (Willd.) Ching. Robert Brown and others interpreted Polypodium unitum according to the references, and Beddome followed this usage. It is now customary to aeeept the type as fixing the application of a name in such cases; it is to be noted that the specimen in the Willdenow Herbarium agrees with the Linnaean type.
The next name, Tectaria serrata Cav., was based on a specimen collected by Nee in Guam. Specimens of the same species were also collected there by Haenke, and Presl at first (1825) identified them with T. serrata, but later (1851) thought this was wrong and published the new name Nephrodium haenkeanum for them. There is no doubt that the two collections were identical.