BY L. RODWAY. 105 



Amblystegium, Br. Sch. 



This is one of the Genera into which the old genus Hyp- 

 num has been subdivided. An ill-defined group, it is dif- 

 ferently accepted by botanists. Following Brotherus, 

 Braithwaite, and many others, it is here understood as: — 



Slender, pinnately branched, growing in wet places. 

 Leaves equal in 5-8 rows, ovate or cordate straight, acute; 

 nerve vanishing above the centre; cells small, elliptic to 

 rhomboid, seldom narrow linear. Capsule, etc., as in Hyp- 

 num. Close to Hypnum, distinguished by the broader 

 cells. 



Amblystegium austro-serpens, Broth. Stems flaccid, about 

 1 cm. Leaves acutely acuminate from a rotund or ovate 

 base, 0.5 mm. long; margin entire; nerve slender, lost 

 above the middle; cells oblongo-rhomboid. 



In stream at mouth of River Huon. 



Drapanocladus sendtneri (Sch.). Long, slender, with 

 short lateral branches. Leaves 1-2 mm. long, broadly 

 lanceolate, falcate, with a tapering slender apex, but not 

 very long, margin entire, nerve strong, lost remote from 

 apex. Cells at the basal angle little enlarged, with thick- 

 ened yellow walls. 



Distinguished from D. fluitans by the shorter, broader, 

 less curved leaves, margin entire, basal angulars yellow, 

 thick walled. In D. fluitans the leaves are linear-lanceo- 

 late, very attenuated apex, very curved, nerve stronger, 

 12 mm. long, margin dentate near apex, basal angular cells, 

 inflated hyaline. 



In almost dry creek, McRobie's Gully. W. A. Wey- 

 mouth. Determined by Prof. Brotherus. 



PJii/onotis austral is, Mitt. Stems mostly 2 cm. long; 

 leaves erecto-patent, crowded, imbricate, lanceolate, with 

 an acuminate apex, 1.3 mm. long, margin acutely dentate, 

 nerve rotund, bold, dentate, shortly excurrent; cells rectan- 

 gular, those of the base more quadrate. Resembling P. 

 ■tenuis. Tayl., only 'eaves smaller, more crowded, also of a 

 more compact habit. 



St. Mary's Pass. W. A. Weymouth. Determined by 

 Prof. Brotherus. 



Bartramidula pusilla (H. f. ft W.), Schimper. This moss 

 is dioecious. Antheridial plants, erect, about 1cm., leaves 

 oblong, closely appressed, antheridia in the axils of the 

 upper leaves. 



This is responsible for the record of Pleuridium nervosum 

 for Tasmania. 



