NEW KEPATIOE. 271 



often uncinate. Leaves from a narrow base lineari obovate, 

 having two but scarcely ever more than three teeth at the 

 summit, by which it is easily distinguished from P. rutilan, 

 Lind. 



30. P. zygophylla, Tayl. ; caule laxe csespitoso, adscendente, 

 flexuoso, subsimplici, surculis interdum flagellaribus ; foliis 

 imbricatis, secundis, adpressis, planis, cuneato-rotundatis, 

 margine supero basi connexis, integerrimis, infero spinoso- 

 dentatis ; calyce subexserto, terminali, obovato, hinc fisso, 

 ore compresso, spinoso. 

 Hab. Ceylon. Hook. Herb. 



Tawney olive. Stems 2-3 inches long. Lower leaves 

 minute. Differs from Jung, conjugata, Hook, by the leaves 

 being unconnected at their inferior bases ; from Jung.falcata, 

 Hook, by the fewer but stronger dentation of the leaves ; and 

 from both P. opposita and P. biserialis, Lind. by the shorter, 

 wider, and scarcely exserted calyx. 



3. Scapania, Ldndberg. 



1. S. brevifiora, Tayl. ; surculis subcaespitosis, adscendentibus ; 

 foliis dentatis, profunde inaequaliter bilobis, lobis rotundato- 

 triangularibus, ventrali convexo, patente, dorsali quadruplo 

 minori, incumbente foliigero; perichsetialibus conformi- 

 bus, majoribus ; calyce perichsetio subaequali, ex angusta, 

 squamis lanceolatis serratis circumdata basi obconicis, pli- 

 catis, compressis, breviter 4-laciniatis, dentatis. 

 Hab. Near Philadelphia. Dr. Watson. 



1-2 inches long, growing among Musci, loosely caespitose, 

 dusky olive, the younger shoots pale green ; branched with 

 2-3 annotinous shoots from the same point below the calyx. 

 The upper lobe is fixed on the lower as in Gottschea, a cha- 

 racter most remarkable in the perichaetial leaves. Calyx 

 short. This species may be distinguished from S. uliginosa, 

 Nees, by the dentate leaves, which, too, are subacute, by their 

 minuter cells, and by the calyx being scarcely exserted out of 

 the pericheetium. 



