Flora of New Zealand Series

Description : Flora (1985: 139).

N: Northland (Kerikeri), Auckland (Waitakere Ra.), Wellington (Palmerston North, Tararua Ra.). S: Westland (Punakaiki, Greymouth), Canterbury (Port Hills Christchurch, Peel Forest), Otago (Merton). Coastal and inland, widely distributed. On both introduced (Liriodendron, Populus, Salix) and native (Cordyline, Hoheria) trees and shrubs, from forest to gardens and parks. Known also from Sri Lanka, the Philippines, East Africa, South Africa, the United States including Hawai'i, and Australia (Degelius 1974; Swinscow & Krog 1988; Filson 1992c; McCarthy 2003c, 2006).

Pantropical

Exsiccati : Moberg (1994a: No. 121).

Illustration : Degelius (1974: 91, fig. 23).

Collema kauaiense is characterised by: the corticolous habit; the small to medium (3–4 cm diam.) thalli; densely isidiate lobes and lobe margins, the isidia globular to styliform to squamiform, and sometimes very small and soredia-like; and an absence of apothecia.