Pleurosorus subglandulosus (Hook. & Grev.) Tindale

Victorian Naturalist 73: 169 (1957) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: data deficient (k)

Rhizome coarse, erect, covered in shiny, purplish-brown, lanceolate, latticed scales with tapering tips. Fronds tufted, erect, 3–17 cm long. Stipe usually shorter than lamina, slender, green; scales similar to those on rhizome, tufted at base and scattered above; hairs numerous; old stipe bases persistent. Lamina once pinnate, narrowly oblong and blunt, soft, dark green, usually densely covered in colourless to rust-coloured hairs, most with glandular tips; rachises slender, winged. Pinnae in 3–8 subopposite pairs, shortly stalked, decurrent on rachis, asymmetrically obovate to fan-shaped, 4–20 mm long, irregularly lobed (outer margin occasionally toothed); veins obscure. Sori in radiating lines along veins, linear-oblong, without indusium; mature sporangia brown to black, sometimes confluent and covering most of under-surface of pinna.

CVU, Gold, GGr, HNF, NIS, OtP, VVP. All States except Tas. Widespread and growing among rocks and in rock-crevices, often in dry or exposed areas.

The distinction of Pleurosorus subglandulosus in Victoria is highly dubious. An abundance of glandular tipped hairs and larger exospores have been used to distinguish this species from P. rutifolius (Brownsey 1998). Pleurosorus subglandulosus is also reputedly a larger plant, but there is no clear disjunction in the size range of Victorian specimens. Victorian and New Zealand plants can have both glandular and eglandular hairs, or only eglandular hairs (Duncan & Isaac 1986; Given 1972), and there is no clear disjunction in their abundance. Identifying hair types on dried material is particularly difficult. Both glandular and eglandular hair are multicellular, and frequently break on drying, leaving broken hairs terminating at the enlarged junction of cells, making accurate distinction between the two hair types only possible with fresh material. The larger spore size in P. subglandulosus may indicate a difference in cytotype (Brownsey 1998). This suggestion has been supported by Tindale & Roy (2002), finding samples of P. subglandulosus from New South Wales and Northern Territory to be tetraploid (n = 72), while those of P. rutifolius are diploid or tetraploid (n = 36 and n = 72 respectively). However, the Victorian sample of P. rutifolius in that study was also found to be tetraploid, and cytotypes may not relate to specific boundaries as currently defined.

Created by: Andre Messina, 2014-06-23
Updated by: Val Stajsic, 2019-02-07
Distribution map

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Pleurosorus subglandulosus in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Pleurosorus subglandulosus in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Otway Plain present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Northern Inland Slopes present native
Highlands-Northern Fall present native

State distribution

Distribution map
State
Western Australia
Northern Territory
South Australia
Queensland
New South Wales
Australian Capital Territory
Victoria