Radula farmeri Pearson. Journal of the Linnean Society, Botany 46: 29. 1922

Renner, Matt A. M., Devos, Nicolas, Patino, Jairo, Brown, Elizabeth A., Orme, Andrew, Elgey, Michael, Wilson, Trevor C., Gray, Lindsey J. & Konrat, Matt J. von, 2013, Integrative taxonomy resolves the cryptic and pseudo-cryptic Radula buccinifera complex (Porellales, Jungermanniopsida), including two reinstated and five new species, PhytoKeys 27, pp. 1-113 : 63-64

Radula farmeri Pearson. Journal of the Linnean Society, Botany 46: 29. 1922

Type.

Ignambi on rocks, 3000 ft, New Caledonia, 30 Jul 1914, R.H. Compton. 1530 N.C. (holotype: BM000825023!).

The type specimens of Radula farmeri and Radula novae-hollandiae (S-B43474!) share the same suite of characteristics;the leaf-lobe apex is obtuse to subacute, the lobules are longitudinally rectangular with a prominent notch in their apex within which sits the lobule papilla, the lobule marginal cells are irregularly crenulate, and the two specimens are also of equivalent size. The similarity between the types suggest the only substantive difference between Radula farmeri and Radula novae-hollandiae might be the perianth mouth, which is fimbriate in the former and entire in the latter. We have only Pearsons (1922) observations on this, as the type specimen of Radula farmeri in BM today bears no perianths.

Australian specimens of Radula farmeri .

Australia: Norfolk Island: Mt Pitt Road, Mount Pitt Reserve, 230 m, 29°1.5'S, 167°56.25'E, 2 Dec 1984, H. Streimann 31867, CANB650456, is Radula subg. Odontoradula sp. indet.; Mount Pitt Reserve, Filmy Fern Trail, off Selwyn Pine Road, 29°01'S, 167°58'E, 130 m, 3 Dec 1984, H. Streimann 32084A, CANB650459 is Radula anisotoma mixed with Radula subg. Odontoradula sp. indet.; Mount Pitt Reserve, Filmy Fern Trail, off Selwyn Pine Road, 29°1.3'S, 167°57.6'E, 130 m, 3 Dec 1984, H. Streimann 32078 (CANB650457, NICH, NY, EGR, H) is Radula anisotoma .

Remarks.

Radula farmeri was recorded for Australia by So (2006). The specimens CANB650456 and CANB650457 are sterile, and while specimen CANB650459 is fertile the perianth mouth is entire. As identification of Radula farmeri is dependent on observation of perianths with fimbriate mouths; her determinations are not substantiated by the specimens, and this species should be excluded from the Australian flora.