336 BOTANY OF SOCOTRA. 



A small species creeping closely on bark, and generally resembling the 

 South African F. trinervis in its mode of growth and in its leaves, but differing 

 in the very much undulated angles of the perianth, which although itself quite 

 smooth at first sight, looks rough like that of F. dilatata. 



2. F. squarrosa, Nees ab Esenb. Syn. Hep. 416. 



Socotra. B.C.S. n. 1440 pro parte. 



Disteib. Some small stems on the twig with Lejeunia serpyllifolia Libert, 

 appear to belong to this species. 



3. OTIONA. 



Otiona, Corda, in Opiz. Beitr. 2, Naturges. 648. 



Plagiochlesma, Lehni. Nov. Stirp. Pug. iv. 13 ; Gotts. Lindb. et Nees, Syn. Hep. 511. 



A small tropical genus with representatives in Africa, Asia, and America. 



O. Aitonia, Forsk. Char. Gen. 147. 



Socotra. B.C.S. Common on the rocks, n. 1417- 



Distrib. Widely-spread over the warmer regions of the globe. 



Without fructification, but agreeing with the usual states of this species 

 recorded from Abyssinia. 



4. FIMBRIABIA. 



Fwibriaria, Nees ab Esenb. Hor. Phys. Berol. 44, and Syn. Hep. 555. 

 A small genus of most parts of the world ; rarer in Africa. 



F. pusilla, Mitt. 



Fronde angusta lineari humida superne planiuscula viridi poris elevatis punctata margine nigro 

 elevato, sicca marginibus inflexis conniventibus, inferne convexa nigro-purpurea, squamis 

 concoloribus a basi lato subdentato-subulatis apicibus in junioribus ultra marginem frondis 

 elevatis ; pedunculo crasso striato fusco, basi pauci-piloso ad insertionem receptaculi vesi- 

 culoso-papulosi fusco-barbato ; periantbiis divergentibus 9-fidis. 



Frons 2 m. lata, radicellis byalinis. Pedunculus 1 c. altus firmus. Periantbium 2 m. longum, 

 laciniis byalinis purpureo-tinctis basi combinatis apice cobaerentibus. 



Socotra. Common on the rocks in many places. B.C.S. n. 1327. 

 Distrib. Endemic. 



A small species related to the Indian F. Wallichiana, F. sanguined, and F. 

 viridis, L. et L., but in all its parts of firmer substance, and differing in many 

 particulars from F. abyssinica, Gotts. 



