2 



congesta latiuscule ovata, acumine brevissimo acuto plus minus 

 horizontaliter recurvato terminata, usque ad acumen cucullato- 

 concava, margine suberecto superne tenerrime indistincte cre- 

 nulata vel Integra, nervo tenuissimo in mucronem brevissimum 

 exeunte percursa, e cellulis pellucidis teneris pro plantula ma- 

 jusculis sed marginem versus minoribus rhomboideo-hexagonis 

 reticulata, infima pauca multo minora; theca minuta globosa 

 omnino inclusa. 



P atria. Paraguay, summitate montis Cerro de Yuguaron, 

 in terra planitiei, J 7. Junio 1879:' B. Bala us a No. 3624. 



Gemmula minutissima albida tereti nee trigona foliisque 

 recurvato-acuminatis facile distinguenda species. 



2. Acaulon (Sphaerangium) Sullivani n. sp.; dioicum; 

 gregarium vesiculpso-globosum membranaceum e pallide viridi 

 dilute fuscatum paucifolium; folia coniertissima, inferiora minora 

 latiuscule ovata, nervo angusto in mucronem subrectum brevem 

 robustiusculum exeunte percursa aperto-concava, superiora multo 

 majora latiora valde convolutacea, e basi angustata brevi lato- 

 ovata et raptim fere in acumen plus minus ro.bustum longiu- 

 sculum fusco-mucronatum attenuata integerrima hie illic im- 

 presso-undulata, nervo angusto fuscato exeunte percursa, e 

 cellulis basi elongatis angustis pellucidis laxis veluti emarcidis 

 teneris apicem versus amplioribus plus minus hexagonis firmio- 

 ribus luteis vel fuscis summitate minoribus magis incrassatis 

 saepius rotundatis reticulata; theca majuscula inclusa globosa 

 fusco-rubra mollis brevissime pedicellata; calyptra minutissima 

 mitraeformis stylum lbngum gerens fugacissima; sporae mediae 

 spliaericae tenerrime papillosae luteae. 



P atria. Australia, Victoria, Mount Ararat: Sullivan 

 1882 lg. Hb. Melbourne. 



Ex magnitudine Ac. mutioi, sed magis* sphaericum- inflatum 

 vesiculosum. 



3. Acaulon (Sphaerangium) vesiculosum n. sp.; dioicum; 

 parvum sphaerico-acuminatum (juventute angustius magis acu- 

 minatum) vesiculoso-turgescens e viridi fuscatum paucifolium; 

 folia dense imbricata, infima minutissima e basi latiore coch- 

 leariformi-ovalia brevissime recte apiculata, nervo ante apicem 

 evanido tenuissimo percursa, margine erecto integerrima, supe- 

 riora multo majora cochleariformi-ovata concava nee convoluta 

 basi angustiora parum longius recte apiculata. perichaetialia 



