Tectaria incisa
Tectaria incisa Cavanilles was first wild-collected in 1985 in Waimanu Valley, Hawai'i (Hobdy 2430, BISH) and on Ha'upu Mountain, Koloa District, Kaua'i (Lau 1307.2, BISH). It was collected in 1989 at the Lyon Arboretum, Manoa Valley, O'ahu, where it was being cultivated and spreading on the grounds; it had been brought in from Waipi'o Valley, Hawai'i, in 1977 (Wilson 1692, BISH). Tectaria incisa is native from southern Mexico to northern Argentina and in the West Indies, and has escaped from cultivation in southern Florida. The pinnate fronds occasionally produce buds or plantlets at the base of the pinnae that facilitate its spread. Plants bearing axillary buds are at times referred to as forma vivipara (Jenman) Morton. This appears to be an aggressive invader in Hawai'i, and its spread should be carefully monitored.
