90 PATAGONIAN EXPEDITIONS : BOTANY. 



1.5-2.5 cm. alta, rubescenti-nitida ; theca pendula, brunnea, clavata, collo 

 siccitate rugoso, sporangio breviore ; denies exostomii lanceolate subulati, 

 0.43 mm. alti et o. i mm. lati, flavi, apice hyalini, papilloso-scaberuli, cet- 

 erum minutissime obscure granulosi, lamellis c. 9 robustis, margines den- 

 tium baud attingentibus ; denies endostomii hyalini, papillosi, usque ad 

 apicem perforati, dentibus exterioribus paulum breviores ; operculum con- 

 vexe conicum, breviter crasseque apiculatum ; cetera ignota. 



Hab. Patagonia australis. 



Resembling Brytim validinervium C. Miill. from Kerguelen Island, but 

 distinct, differing from that species in its shorter stem, longer excurrent 

 nerve, wider and weaker cells of the leaves and more remotely and more 

 robustly lamellated external peristomial teeth. 



Resembling also Bryum macrantherum C. Mull, from Kerguelen Island, 

 but easily distinguished by the longer excurrent nerve of its leaves and its 

 remotely lamellated external peristomial teeth ; the teeth of the species 

 just named have at least 25 lamellae. 



BRYUM VERNICOSUM Dusen n. sp. 



PI. X, Figs, i, 2. 



Dioicum; dense intertexte caespitosum, caespitibus expansis, humilibus, 

 inferne fuscis, summitate lutescente viridibus, haud nitidis ; canlis usque 

 ad i cm. altus, e basi ad medium vel ultra radiculosus, radiculis atropur- 

 pureis, e medio foliosus, simplex vel interdum pauci-ramosus ; folia 

 infima parva, sursum sensim majora, sicca appressa, humida suberecta, 

 stricta, haud decurrentia, usque ad 1.45 mm. longa et 0.5 mm. lata, con- 

 cava, marginibus integerrimis, ubique reflexis, carinato-nervosa, nervo 

 rubro, valido, basi 0.063 mm - crasso, percurrente, cum apice evanido vel 

 breviter excedente ; cellulce laxae, hyaline, sat firmae, apicales medianaeque 

 plus minusque distincte rhombeae, basales rectangulae, marginales longi- 

 ores, sed cellulis ceteris paulum diversae; bractecz perichcetii foliis caulinis 

 superioribus similes sed paulum majora, nervo longius excedente, sed vix 

 cuspidate, seta stricta, tenuis, rubella, nitida, 2-2.5 cm - a lta; theca pen- 

 dula, fuscobrunnea, ore atropurpureo-vernicoso, collo sporangio siccitate 

 lato-ovato vel oblongo-ovato breviore, anmdus secedens, latus, tribus 

 seriebus cellularum compositus ; denies exostomii subulati, aurei, 0.35 mm. 

 alti et 0.045-0.050 mm. lati, superne hyalini, laevissimi, inferne minu- 

 tissime granulosi, lamellis c. 15 praediti ; operculum stricte conicum, atro- 



