trigones with bulging sides. Stipules, the width of the stem or a little more, 0·3 mm. tall, ovate-rotund, mostly entire, rarely very shortly bifid, more regular in shape than the leaves. Perianth 3·5 mm. long, 0·5 mm. broad at the base, narrowed to the apex, month piliferous, hair-points to 0·3 mm. long, crooked and entangled, a little toothed and in one instance branched. Seta as long as the perianth. Innermost pair of invol. leaves reaching almost ⅓ up the perianth, with narrow apices, shortly bifid reflexed. Second pair reaching half-way tip the innermost, with similar apices. The perianth is here described for the first time. This species resembles A. integrifolium in its small size, transversely attached leaves and similar cells, but that species has purely ovate leaves with regular apices. Stephani specially comments on the vertical (transverse) attachment of the leaves. From a moist sandy soil, at head of Crooked Reach, Port Pegasus. Stewart. That this species should be found with Radula dentata Mitt. on Stewart Island is a remarkable instance of discontinuous distribution, as both of these are Great Barrier Island plants. A. marginatum is also a northern plant. The type was from Great Barrier Island, leg. Kirk. Acromastigum brachyphyllum Evans. Text-fig. 2, fig. 12. Acromastigum brachyphyllum Evans, Annales Bryologici Supp. Vol., iii, 1934. Plants consisting of loose stems, coloured as in A anisostomum. Stems 6 cm., blackish, dichotomously branched from acute angles. Leaves scarcely contiguous to a little imbricate, obliquely spreading, small, 0·35–0·45 mm. long, 0·25–0·3 mm. broad at the base, bilobed, lobes triangular sometimes much reduced, apex usually decurved; ventral lobe the larger, scarcely 0.1 mm. long, sinus small acute; ventral margin straight or a little concave, mostly at an angle of 45 degrees from the axis, a little incurved. Dorsal margin strongly rounded at the base. Vitta of cells not clearly defined, and trigones indistinct, but the cells in the ventral area are larger than those in dorsal, ca. 25μ, decreasing to 10μ, at the dorsal margin and the upper portion of the leaf. Stipules as in A. anisostomum broader at the base and very obtusely trilobed. According to the author, there are patches of bistratose arrangements in the leaf, these regions involving 2–5 cells. Inflorescences unknown. This species differs from A. anisostomum and A. Mooreanum in the small leaves with very short lobes, in the vitta being indistinct, and in the small areas of bistratose cells. Type from Paparoa Range, Westland, 3,000ft., coll. by R. Helms, no. 4948 Bot. Div. Herb., in Kirk's collection. Acromastigum Mooreanum (Steph.) comb. nov. Text-fig. 2, fig. 15. Bazzania Mooreana Steph. Hedwigia, 33, 1, 1894. Mastigobryum Mooreanum Steph., Spec. Hep., iii, 539, 1909. Acromastigum anisostomum Evans, Ann. Bry Supp. Vol. iii, 48, 1934. Plants in tufted cushions on the ground and trunks of trees, similar in appearance to A. anisostomum and like the latter, xerophytic. Stems to 6 cm., blackish in the lower part, usually twice dichotomous, apices inclined or subcircinate.