434 Transactio?is. — Botany. 



Hab. Trees, Mount Torlesse ; January, 1886. Collected 

 by E. B. 



20. Orthotrichum brevisetum, sp. nov. 



Plants monoecious, dark-green, growing in small dense 

 tufts Jin. high, branched by innovations. Branches very 

 short, fastigiate. Leaves erecto-patent, closely imbricating; 

 lower ones oblong-lanceolate, shortly acute ; middle and 

 upper ones largest, oblong-lanceolate, subacute, concave. 

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

 Nerve keeled, ending below the point. Areola : Upper puncti- 

 form, lower linear-oblong. Perichatial leaves smaller than 

 the upper ones, erect, oblong-lanceolate, acute, concave. Mar- 

 gins plain, entire. Nerve ending below the apex. Fruitstalk 

 very short, erect. Capsule large, oblong, pyriform, tapering 

 into the fruitstalk, subimmersed. Peristome double : outer 

 8 bigeminate, entire ; inner 8 slender cilia alternating with 

 the outer ones, consisting of one row of cells as long as the 

 outer ones. Operculum small, conico-rostrate, straight. 

 Calyptra mitriform, shorter than the capsule, plicate, pilose, 

 Male inflorescence gemmaceous in the axil of a leaf below the 

 perichastium. 



Hab. Eocks, Lyttelton hills; 1884: and on trees in the 

 same locality ; August, 1894. Collected by E. B. 



21. Orthotrichum acuminatum, sp. nov. 



Plants monoecious, brownish-green, growing in loose tufts 

 from liu. to l^in. high, branched by innovations. Branches 

 long or short, spreading, fastigiate. Leaves erecto-patent, 

 closely imbricating; lower ones ovate-lanceolate, acute; 

 middle and upper ones similar in their outline, upper largest, 

 broad, ovate-lanceolate, tapering into a subapiculate point, 

 concave. Margins plain, entire. Nerve continued to the 

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

 when dry erect and adpressed. Pcrichcetial leaves longer 

 than the upper ones, erect, narrow, ovate-lanceolate, tapering 

 into an acute point, concave, sheathing. Margins plain, 

 entire, nerved to the apex. Fruitstalh short, erect, slender at 

 the base, thickened upwards. Capsule immersed, elliptic, 

 narrowing into the mouth and tapering into the fruitstalk. 

 Peristome double: outer 8 bigeminate, entire; inner 8 cilia 

 consisting of two rows of irregular cells shorter than the outer 

 ones and alternate with them. Operculum conico-rostrate, 

 nearly one -third the length of the capsule; beak straight, 

 slender. Calyptra mitriform, shorter than the capsule, pli- 

 cate, slightly pilose. Male inflorescence gemmaceous in the 

 axil of a leaf below the perichajtium. 



Hab. Eocks, Moa Creek, a tributary of the Eiver YVilber- 



