280 Transactions. — Botany. 



Ordek v.— hepatic^. 



Genus 2. Jungermannia, Linn. 



1. J. pygmaa, sp. nov. 



Plant minute, erect, 2 (rarely 3) lines liigli, of close, com- 

 pact growth, pale-green. Stems highly cellular. Leaves sub 

 20, orbicular, narrowed at base, semi-amplexicaul, not decurrent, 

 imbricate, vertical, sub-recurved at tips, margm entire but 

 slightly uneven ; cells small, orbicular, and minutely beaded at 

 apex of leaf, larger and oblong, with minute triangular cellules 

 in the interstices in the centre and at the base, and minute sub- 

 quadrate and regular at the margin, giving the leaf a margined 

 appearance. Stipules 0. Perianth obovate, 6-lobed, and pli- 

 cate, each lobe 3-toothed, the central tooth largest and ciliate 

 with 5-6 short ciliae; cells large, oblong-quadrangular. Seta 

 slender, capillary, flexuous, 4^ lines long, highly cellular ; cells 

 narrow, longitudinal. Capsule small, brown ; valves oval, 

 obtuse, slightly margined, striate with dark-bro^vu wavy lines 

 and numerous minute transverse ones ; cells oblong. 



Hah. On wet sides of clayey and sandstone cuttings, 

 closely intermixed with a minute Fissidens, and forming one 

 compact and spreading mass ; Glenross, County of Hawke's Bay; 

 1886 : Mr. D. P. Balfour. 



Ohs. A species very near to J. humiUssima, Col,, ("Trans. 

 N.Z. Inst.," vol. xviii., p. 236, and to other small allied species 

 mentioned there), but differing mainly from that species in the 

 form of its perianth and its capsule, in the cells of its leaves, 

 and in its smaller size. 



Genus 3. Plagiochila, Nees and Mont. 



1. P. polycarpa, sp. nov. 



Rhizome creeping, long, much branched. Stems dendroid, 

 erect, 6-9 inches high, woody, sub-rigid, bare and compressed 

 below cylindrical above, black, glossy, bipiimately branched ; 

 branches asceuding and horizontal, very numerous, especially 

 above, irregular in length — sometimes a branch as large and as 

 thick as the main stem proceeds horizontally from it near the 

 base. Leaves light-green when young, olive-green when old, 

 much crisped when dry, closely set, imbricate, largely decurrent, 

 ventral margins cilio-denticulate ; teeth few, distant, but closer 

 and smaller at apex ; dorsal margin entire and very oblique ; 

 cells sub-orbicular. Main stem 2.\ lines wide (including leaves), 

 leaves large, somewhat elliptic-orbicular, apices round, their 

 ventral bases much produced and clasping ; branches (with 

 leaves) li lines wide, their leaves smaller and somewhat 

 deltoid in outline ; involucral sub-obovate, narrow, sub-veriical, 

 ciliate on ventral margin and at apex, dorsal margin entire. 



