26 



ON PHASCUM TASMANICUM. 



By H. N. Dixon and L. Rodway, C.M.G. 



(With 1 Text Figure.) 



(Read 10th April, 1922.) 



Phascnm tasmanicuvi, sp. nov. Gemmiform, 1-2 mm. 

 high. Leaves numerous, broadly ovate-lanceolate, acuminate; 

 upper margin closely revolute; midrib yellow, strong long- 

 excurrent in a squarrose recurved point; upper cells quadrate, 

 each bearing two or three bold papilla, lower ones rather 

 longer, smooth, colourless. Capsule on a very short seta, 

 nearly globose, minutely apiculate. 



Mr. H. N. Dixon writes: — 



" It is quite different from any described species; and I 

 " suggest the name Phascum tasmanicum, Rodway and 

 " Dixon. It is nearest, perhaps, to P. floerkeaniim, W. et M., 

 " but the longly excurrent, squarrose-recurved nerve, strongly 

 " recurved margin, and highly papillose cells, distinguish it 

 " clearly." 



EXPLANATION OF FIGURE. 

 Phascum tasmaiiicnm, sp. nov. 

 Fig. 1. Three times natural size. 

 Fig. 2. Plant. 

 Fig. 3. Leaf. 

 Fig. 4. Section of leaf. 

 Fig. 5. Surface papillae. 

 Fig. 6. Sporogonium and calyptra. 



