Nephrolepis hirsutula

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Description

Habit, rhizome morphology. Hairs absent from lamina and costae.

Distribution

Asia-Tropical, Australasia: Queensland (Queensland present), Pacific Islands present

Indochina; in Malesia: Throughout; Australia: Queensland; Pacific islands.

Notes

Nephrolepis hirsutula differs from N. brownii (N. multiflora auct.), with which it has been extensively confused, in the sori placed less close to the margin, sometimes nearly medial; the dense, rufous rhachis scales with very strongly dentate acumen; and the glabrous upper surface of costae. In contrast, N. brownii has usually sparser, paler rhachis scales, with a longer, nearly always entire narrow apex. The combination of the rufous, dense, rhachis indument and glabrous upper surface of the costae is characteristic for N. hirsutula, while the position of the sori is more variable. In case of doubt, the glabrous upper costa-surface is usually decisive.

Citation

Hovenkamp & Miyam. 2005 – In: Blumea: 304

Sw. 1806: Syn. Fil.: 45, 241

Nicolson & Fosberg 2003: The Forsters and the Botany of the Second Cook Expedition: 136

Holttum 1968 – In: Revis. Fl. Malaya, 2nd ed: 382

Blume 1828: Enum. Fl. Javae: 146

Tagawa & K.Iwats. 1985 – In: Fl. Thailand: 177

C.Presl 1830: Reliq. Haenk.: 32

Backer & Posth. 1939: Varenfl. Jav.: 92

Brack. 1854 – In: U.S. Expl. Exped.: 211

Copel. 1958: Fern Fl. Philipp.: 188

Backer & Posth. 1939: Varenfl. Jav.: 89