Plagiochasma. franz stepham. species hepaticarum. 779 



lunalse, sensim in appendiculum anguslata, appendiculis hyalinis soli- 

 tariis, e lata basi acuminatis brevmsculis, acutis, haud constrictis. 



Carpocephala breviter pedunculata, pedunculo-fusco-brunneo, atte- 

 nuato, apice breviter barbato; capitula vertice breviter umbonata, rugu- 

 losa. Sporae 76 [x. Elateres breves 200 {jl, bispiri, spiris anguste tortis. 

 Androecia furcata, in ramulis posticis obcordatis. 



Hab. Africa orient. Kilimandscharo, ad lacum Dschalla (Holst). 



>^ 4. P. tenue St. n. sp. 



Dioica, major, viridis vel pallide virens. Frons usque ad 2 cm. longa, 

 3-4 mm. lata, ex apice innovata, antice subplana, postice purpurea, costa 

 angusta, vix producta, alis tenerrimis, crispatulis. Stomata minima, poro 

 parvo, 4 solum cellulis conicis circumdato, ssepe ad rimam angustam 

 reducta. Cellulae epidermidis trigonis magnis incrassatse. Squamae posticse 

 magnae, marginem frondis superantes, e lata basi subtrigonse, apice ad 

 73 bilidse, lobis geminatim approximatis, arcte parallelis anguste trian- 

 gulatis sensim acuminatis, acutis, nullibi constrictis. Peduncuhis brevis 

 (7 mm. longus), apice longe barbatus. Beceptacula valde convexa, biloba, 

 lobi antice convexi; sporae reticulatim anguste alatae 60 {a, flavescentes. 

 Elateres concolores, 220 ji trispiri, spiris laxe tortis. Androecia ignota. 



Hab. Africa australis. Transvaal (Mac Lea, Wilms.), Usambara (Holst), 

 Angola (Welwitsch). 



Squamis triangulatis profunde bifidis facile distinguenda. 



5. P. limbatum (Taylbr) Nees. Syn. Hep. p. 516. 



Syn. Fegatella limbata Taylor, J. of Bot, 1845, p, 95, 



Dioica, minor, viridis, subtus purpurea. Frons usque ad 18 mm. longa, 

 5 mm. lata, dichotome ramosa, crassa, costa lata, convexa. Stomata parva, 

 poro minuto, cellulis 5 obconicis circumdato, parietibus radialibus maxime 

 sequaliterque incrassatis. Cellulae epidermidis trigonis magnis incrassatse, 

 Squamae posticse parvse, oblique lunatse, longe (ssepe geminatim) appen- 

 diculatse, appendiculis haud constrictis, e lata basi longe acuminatis, 

 acutis, margine papulosis. Carpocephala plus minus longe pedunculata 

 (ipse haud vidi) pedunculo longe barbato; capituU discus centralis 

 rugosus, involucra plerumque 2. Sporae f Elateres breves. Androecia 

 rotunda ssepe seriata. 



Hab. Insula Ascension. (Hooker). 



76 



