Hi/grolejeunea. FRANZ stephani. spkcies hepaticahum (Vol. V, 1914). 



11. Hygrolejeunea pterota (Taylor) St. 

 Syn. : Lejciinea plerola Tayioi' Syn. Hep., p. 367. 



Lejeunea Ascensionis Tayl. Syn. Hcp., p. 368. 



Monoica, mediocris gracilis flaccida, rufo-brunnea, muscis consociata. 

 Caulis ad 4 cm. longus, irregulariter remoteque bipinnatus. Folia cau- 

 lina contlgua, recte patula, concava apiceque decurva, in plano ovato- 

 oblonga (0,9 mm. longa, 0,5 mm. lata) aplce acuta vei apiculata, brevi 

 basi inserta, basiantica rotundata, integerrima. Ce//wi^E superse 18xl8[j., 

 basales 18X27 jx, trigonis majusculis. Lobulus magnus, folio triplo 

 brevior, oblongus, triplo longior quam latus, carina oblique adscen- 

 dens, substricta, amplo sinu in folium excurrens, apice quam basis 

 duplo angustiore, exciso, angulo spina valida armato. Amphigastria 

 caulina ovato-elliptica, imbricata (0,5 mm. longa, 0,33 mm. lata) ad V^ 

 inciso-biloba, sinu augusto, lobis triangulatis obtusis. Perianthia uno 

 latere innovata, clavata (1,17 mm. longa, 0,5 mm. lata) apice truncato- 

 rotundata, rostro valido, longiusculo, plica antica bumillima, plicis 

 posticis in unam latam confluentibus, ad medium divergenti-decurren- 

 tibus. Folia floralia perianthio duplo breviora, lanceolata apice obtusa 

 vel rotundata ; lobulus linearis, foliis floralibus parum brevior, ad 

 Vs solutus, obtusus. Amphigastrium florale spathulatum, liberum, foliis 

 floralibus sequilongum, apice inciso-bidentulum. Andro&cia sessilia, 

 bracteis trijugis. 



Hab. Insulx St-Helena et Ascension. 



12. Hygrolejeunea pulcherrima St. Bot. Jahrb. 1886, p.87. 

 Dioica, flavo-virens gracillima, in ramulis arborum nidulans et pen- 



dula. Caulis ad 12 cm. longus, parum longeque ramosus, ramisremotis 

 irregulariter pinnulatis. Folia caulina remotiuscula, oblique patula, 

 concava, margine infero incurvo, in plano ovato-lanceolata (1,5 mm. 

 longa, 0,75 mm. lata) longe cuspidata apiceque setacese, integerrima, 

 ad medium inserta, basi antica rotundata. Cellulse 18X36 jj., trigonis 

 nullis, basales 27X36 [j. trigonis majusculis. Lobulus exiguus, saepe 

 rudimentaris, normaliter late conicus, carina oblique adscendens, sub- 

 stricta, levi sinu in folium excurrens, apice quam basis triplo angus- 

 tiore, exciso, angulo acuto. Amphigastria caulina niaxima, ovata 

 (0,83 mm. longa, medio 0,58 mm. lata) sinuatim inserta, basi utrinque 

 breviter rotundata, ad medium bifida, rima angusta obtusa, lobis lan- 

 ceolatis cuspidatis porrectis. Perianihia parva, uno latere innovata, 

 anguste pyriformia (0,9 mm. longa, superne 0,5 mm. lata) rostro 

 validissimo, plicis posticis angustis, longe decurrentibus. Folia floralia 



527 



