NEW HEPATICJ3. 385 



vato-rotundate. Calyx (only one was "observed including a 

 green capsule,) scarcely exserted, from a narrow base obo- 

 vato-rotundate, smooth below, with 8-10 obtuse ribs above, 

 topped by a narrow tube. The much smaller size, duskier 

 colour, the leaves not apiculate, and obovate calyx, will 

 readily distinguish this from Pt. sulcatus, Nees ; whilst " the 

 flat, distichous, obliquely ovate and acute leaves*' of Pt. retu- 

 rns, Nees, keep it apart from our plant. 



2. Pt, pycnocladus, Tayl. ; caule subceespitoso, procumbente, 

 ramoso, ramis brevibus, turgidis, adscendentibus ; foliis 

 imbricatis, erecto-patentibus, oblongis, subdecurvis, inte- 

 gerrimis, margine ventrali incurvo, lobulo ovato involuto ; 

 stipulis imbricatis subrotundis ; calyce terminali, subexerto, 

 subdecemplicato, tubo coronato. 

 Hab. On bark. Malacca. Hook. Herb. 



Patches wide, dusky brownish-purple. Branches nume- 

 rous, close, all pointing in the same direction, thick, obtuse. 

 Leaves, when wetted, shining and patent ; the perichaetial pair 

 with a sinus, bilobate, the stipular entire, oblongo-rotundate. 

 The calyces become conspicuous by the expanding of the 

 moistened leaves, they have about ten ribs, and a consider- 

 able tube above. Neither this nor the preceding species has 

 the natural habit of the genus. 



16. Omphalanthus, Lindb. et Nees. 



1. O.gracilipeSfTzyl. ; caule subdisperso, debili, procumbente, 

 ramoso; foliis laxe imbricatis, patentibus, late oblongis, 

 obtusis, integerrimis, lobulo ovato, tumido, involuto ; sti- 

 pulis majoribus, cordatis, sinuato-bifidis, segmentis inte- 

 gerrimis ; calyce demum laterali, ex basi graciHima oblan- 

 ceolato, laevi, inflato, quam pericheetio triplo longiori, apice 

 depresso, elongate tubifero. 



Hab. Pacific Isles. Nightingale, Hook. Herb. 



Patches loose and scattered among Musci, very pale or 



whitish-brown. Stems rather more than 1 inch long. Leaves 



but little imbricated, patent, or sometimes with their tops 



VOL. V. F P 



