Mastigobryum. franz stkpiiaini. species iiepaticarum (Vol.VI, 1924) 



trigonis subnullis, basales 36x45fx trigonis majusculis. Amphi- 

 gastria caulina parva, cauli vix sequilata, latiora quam longa, apice 

 tri- vel quadriloba, lobis dense minuteque serrulatis. 

 Hab. Hawai (Newell legit). 



370. Mastigobryum Gunnianum St. n. sp. 



Sterilis mediocris flavicans rigida. Caulis ad 3 cm, longus, 

 parum longeque ramosus, flagellis brevibus numerosis. Folia cau- 

 lina conferta, recte patula, canaliculatim concava, margine infero 

 arcte incurvo, in plano oblonga (1,75 mm. longa, supra basin 0,83 

 mm. lata) asymmetrica, margine infero substricto, supero e basi 

 late rotundata substricto, apice truncata (0,5 mm. lata) emarginato- 

 tridentata, dentibus validis triangulatis divergentibus acutis. 

 Cellulse superae 18xl8[j„ parietibus validis, basales 27x45[x, 

 trigonis majusculis, acutis. Amphigastria caulina magna, rectan- 

 gulata, transverse inserta (0,83 mm. longa, 0,58 mm. lata) margini- 

 bus ubique repandis, apice irregulariter minuteque dentatis. 



Hab. Novas Hebridse (Gunn legit). 



371. Mastigobryum subhamatum Bvrd. n. nov. = M. hamatum 

 St. mss., non in Sp. Hep. HI [1908] 440. 



Sterilis mediocris gracillima rigida flavo-rufescens. Caulis ad 3 cm. 

 longus, simplex vel sparsim longeque ramosus. Folia caulina conferta, 

 arcet decurvo-homomalla, in plano late ovato-trigona, asymmetrica, 

 margine supero ebasi rotundata late arcuato, infero substricto (1,67 

 mm. longa, basi l,17mm. lata) apice maxime variabilia, inaequaliter 

 bifida vel breviter trifida (lacinia media multo validiore) vel pro- 

 funde bifida, laciniis valde insequalibus, supra breviter bifida, infera 

 anguste lanceolata profundeque soluta. Cellulae superse 18 x 18 [j,, tri- 

 gonis magnis acutis, basales 27 x 27 \l, trigonis majusculis acutis. 

 Amphigastria caulina caule duplo latiora, oblique patula valde con- 

 cava, parum latiora quam longa, maxime insequalia, apice breviter 

 obtuseque quadriloba vel profunde biloba, lobis apice obtuse biden- 

 tulis vel fere ad basin bifida, laciniis late lanceolatis cuspidatis. 



Hab. Japonia (Faurie legit). 



372. Mastigobryum Hebridense St. 



Sterilis magna robusta rigida, dilute olivacea, corticola. Caulis 

 ad 5 cm. longus, parum longeque ramosus, validissimus. Folia 

 caulina imbricata, recte patula, canaliculatim concava, in plano 

 anguste ligulata, leviter falcata (4 mm. longa, supra basin 0,5 mm. 



80 janvier 1924 -465 30 



