Brown. — On the Genus Orthotrichum. 437 



Margins plain, entire. Nerve ending below the apex. Areola : 

 Upper punctiform. lower oblong. Leaves crisp when dry. 

 Perichcetial leaves slightly shorter than the upper ones ; outer 

 one ligulate, rounded at the apex ; inner one ligulate from an 

 ovate sheathing base, rounded at the apex, concave. Margins 

 plain, entire. Nerve ending below the apex. Fruitstalk in- 

 clined, -l,in. long. Capsule shortly ovate, exserted, annulate. 

 Peristome single, 16, geminate, perforated on the middle line. 

 Operculum conico-rostrate, beak very long, nearly as long as 

 the capsule. Galyptra mitrifonn, plicate, not pilose, longer 

 than the capsule. Male inflorescence gemmaceous, situated on 

 the perichaetium. 



Hab. Dry rocks, gorge of the Hurunui Eiver ; March, 1893. 

 Collected by E. B. 



27. Orthotrichum minutum, sp. nov. 



Plants monoecious, brownish-green, growing in very small 

 dense tufts from T 3 ¥ in. to Jin. high, branched by innovations. 

 Brandies short, fastigiate. Leaves small, erecto-patent or 

 spreading at the top of the branch ; lower ones small, linear- 

 lanceolate, acute ; middle and upper very similar in their out- 

 line, linear-lanceolate, subacute, flexuous ; base erect, sheath- 

 ing, concave. Margins plain, entire. Nerve continued to the 

 apex. Areola : Upper punctiform, lower linear-oblong. 

 Leaves crisp when dry. Perichcetial leaves erect ; outer one 

 largest, oblong-lanceolate, rounded to an obtuse point, concave. 

 Margins plain, entire. Nerve continued to the apex. Fruit- 

 stalk short, slender, erect. Capsule small, pyriform, tapering 

 into the fruitstalk. Peristome single, 8, bigeminate, entire. 

 Operculum not found. Calyptra mitriform, as long as the 

 capsule, plicate, not pilose. 



Hab. Trees, Lyttelton hills ; September, 1888. Collected 

 by E. B. 



28. Orthotrichum brevirostrum, sp. nov. 



Plants monoecious, green above, very dark below, growing 

 in small tufts fin. high, branched by innovations. Branches 

 short, j^in. long, fastigiate. Leaves closely imbricating, erecto- 

 patent ; lower and middle ones similar in their outline, be- 

 coming larger upwards, broadly ovate-lanceolate, rounded at 

 the apex, concave. Margins entire, recurved from the base to 

 near the apex, papillose. Nerve keeled, ending below the 

 apex ; upper leaves larger than the middle ones, but not re- 

 curved on the margin, otherwise similar. Areola : Upper punc- 

 tiform to near the base, lower linear-oblong. Leaves when 

 dry erect. Perichcetial leaves erect, smaller than the upper 

 ones, oblong-lanceolate, rounded at the apex. Margins entire, 

 not recurved, concave. Nerve ending below the top. Fruit- 



