BY R. A. BASTOW, F.L.S. 221 



GENERIC AND SPECIFIC DESCRIPTIONS. 



1. PLAGIOCHILA, Nees and Montague. 



Perianth compressed. Stipules 0. 

 Stems from a creeping rhizome, erect, ascending, or creeping ; 

 often large and rigid. Leav.es distichous, succubous, dorsal 

 margin decurrent and reflexed, often obliquely. Stipules 0. 

 Fruit terminal or lateral. Involucral leaves two, larger 

 than the cauline. Perianth compressed at right angles 

 to the insertion of the leaves ; mouth truncate, entire, 

 or toothed. Calyptra membranous. Capsule on a long or 

 short fruit-stalk, ovoid ; elaters with two spiral fibres. 

 Antheridia covered by small imbricated ventricose perigonial 

 leaves. 



I. Stems sparingly branched. Leaves alternate, concave, 

 more horizontal than vertical. Lower margin not 

 much decurrent nor recurved. 



1. P. circinalis, l-3in. high. 



II. Leaves more or less vertical, alternate, the margins 

 recurved, dorsal decurrent. 



* Stems erect from a creeping rhizome, tall, very 

 much branched in a tree-like or fascicled manner. 

 Leaves toothed and usually spinulose. 



2. P . fasciculata, Sin. high. 



** Stems not dendroid nor fascicled, either simple or 

 dichotomous, or sparingly divided. 



(o.) Leaves entirely or very slightly toothed, or 

 1-2 toothed at the apex. 



3. P. micro dictyum, 2-3in. high, 

 .4. P. MagellanicuiUf Igin. high. 



5. P.,pusilla, fin. high. 



(ft.) Leaves much toothed and spinuiose, 



6. P. Stuartiana. 



7. P. strombijblia, l-4in. high. 



8. P. deltoidea, 2-4in. high. 



9. P. annotinay 3-5in. high. 



10. P. Lyalliif 2-3in. high. 



11. P. 7^etrospectans, 2in. high. 



12. P. bisirealis, 2in. high. 



