New Zealand J. Bot. 15: 60 (1977) APNI
Rhizome short, thick, covered with ovate-lanceolate, dark brown, translucent scales. Fronds tufted, erect to spreading, mostly 20–120 cm long, usually large and drooping. Stipe shorter than lamina, stout, grooved and green above, dark to almost black on lower surface; scales at base of stipe similar to rhizome scales but with long-tapering tips; scales along stipe, rachises and veins smaller, with broad triangular bases. Lamina ovate to oblong-lanceolate, 2–3-pinnate, often finely divided, pale to dark green, thin-textured (but not membranous); primary rachis with broad central rib between narrow grooves, thickened basal edges of pinnae decurrent along outer edges of groove. Bulbils (which form new plantlets) frequently present on upper surface of lamina, towards tips of pinnae, preceded by a group of dark brown scales on veinlet. Pinnae shortly stalked or sessile, ovate-oblong, often with tapering tips; pinnules elliptic-lanceolate, sessile or with short coarse stalks, obovate to triangular, 4–20 cm long, entire or with shallow lobes, outer margins convex; veins obscure except for raised midveins. Sori short, oblong, submarginal along pinnules or lobes; indusium oblong, firm, membranous.
CVU, EGL, EGU, GipP, Glep, GGr, HFE, HNF, HSF, MonT, NIS, OtP, OtR, SnM, Strz, VAlp, VVP, WPro. Also SA, Qld, NSW, Tas. (including Bass Strait islands). New Zealand. Usually found in gullies of rainforest, on logs or tree-fern trunks, among rocks, or near streams and waterfalls.
All Victorian material appears to belong to subsp. gracillimum, differing from subsp. bulbiferum in having smaller fronds, fewer bulbils, larger spores, and stipe scales with long-tapering tips. In New Zealand, subsp. gracillimum grows in drier habitats than subsp. bulbiferum (Brownsey 1977). The bulbils, when present, are a distinctive feature of this species and may develop into quite large plants (up to 7 cm long) before rooting and growing independently. Asplenium bulbiferum reportedly hybridizes with A. appendiculatum, A. obtusatum and possibly A. flaccidum.
Plants commonly cultivated in Australia under the name Asplenium bulbiferum are Asplenium x lucrosum Perrie & Brownsey, which is a sterile hybrid between Asplenium bulbiferum subsp. bulbiferum and Norfolk Island Asplenium dimorphum (Perrie et al. 2005). Asplenium x lucrosum has aborted spores and is perpetuated by bulbils.
|Bioregion||Occurrence status||Establishment means|
|Victorian Volcanic Plain||present||native|
|Central Victorian Uplands||present||native|
|Northern Inland Slopes||present||native|
|East Gippsland Lowlands||present||native|
|East Gippsland Uplands||present||native|
|New South Wales|
|Australian Capital Territory|