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Genus Sphenolobus (Lindb.) Steph.
Jungermannia subgen. Sphenolobus Lindb., Musc. Scand., p. 7.
Sphenolobus, Steph., Spec. Hep., ii, 1901.
An artificial genus separated from Lophozia on account of the transversely inserted and more concave leaves. But even these distinctions are not constant.
Sphenolobus perigonialis (Tayl.) St.
Jung. perigonialis Tayl., Lond. Journ. of Bot., 1844; Fl. Antarc., 1847; Fl. Tas., 1860; Handb. N.Z. Fl., ii, 502, 1867.
Sarcoscyphus perigonialis G. L. et N., Syn. Hep. (Supp.), 1847.
Sphenolobus perigonialis St., Spec. Hep., ii, 163, 1901–5; Rod., Tas., Bry., ii, 32, 1916.
Plants minute, intermixed, caespitose, dark brown, tips lighter. Stems simple, 1–2.5 cm., dark brown to blackish, erect, sub-flexuous, branches few or none. Leaves small, distant, transversely inserted, 0.3–0.5 mm., generally squarrose, concave, emarginate to unequally bi-lobed, lobes acute to obtuse. Cells sub-quadrate, ± 30μ, apical small, marginal more oblong. Trigones small or absent. Invol. leaves scarcely differing from the foliage. What appears to be a stipule is connate with the leaf on one side. Perianth 1 mm. or more, one exceptionally big one measuring 2 mm., oblong-doliform or obovoid, upper portion plicate, mouth hyaline, variously dentate. One perianth was deeply cleft on one side, from which fissure the seta hung out.
The original plant, from the Auckland Islands, was a ♂ specimen, hence the name.
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Three specimens only have been examined, two from a creek bed on Mount Ruapehu, coll. G. O. K. Sainsbury, one with Radula sainsburiana, the other with Chiloscyphus ammophilus. Also from Ocean Peak, with Plagiochila circinalis, ex 17048, P. R. B. Herb., V. D. Zotov.
Berggren records it from the Bealey River. Rodway also records it from New Zealand.
Sphenolobus ocrophyllus (Tayl.) St.
Jungermannia ocrophyllus Tayl., Lond. Journ. of Bot., 368, 1844; Fl. Ant., 145, 1847; Syn. Hep., 617, 1847.
Gymnomitrium corophyllum, Syn. Hep., 617, 1847; Handb. N.Z. Fl., 501, 1867.
Sphenolobus ocrophyllus St., Spec. Hep., ii, 157, 1901.
“Stems pale green, filiform, sparingly branched 1–1 ½ in., high. Leaves distichous, loosely imbricate erecto-patent, concave, obovate or sub-quadrate, shortly 2-fid, segments obtuse, cells lax. Stipules very minute or absent.”—From Handbook N.Z. Flora.
“Lord Auckland's Group, 1200 ft., on rocks…. From J. perigonialis it may be distinguished by its greater size, paler hue, stout stems, and more crowded leaves, which are loosely reticulated and have obtuse segments.”—From Flora Antarctica.