88 Carol. Müller. 
Fissidenti platylomulo affınis, sed theca erectiuscula anguste 
peristomata foliisque planis jam diversus. 
8. Fissidens (Bryoidium) Ventanae n. sp.; caulis exilis 
simplex; folia circa 10-juga minuta surculum complanatum remoti- 
folium sistentia, e basi angustiore elliptica brevissime acuminata in- 
tegerrima, limbo maxime angusto circumducta, nervo pertenui pallido 
subgeniculate flexuoso in acumen brevissimum acutiusculum evanido 
exarata, e cellulis minutissimis rotundis teneris areolata chlorophyllosa. 
Caetera ignota. 
Habitatio. Argentinia Patagonica, Sierra Ventana, 1881: 
Pe Borentz. 
9. Fissidens (Heterocaulon) Hauthali n. sp.; cespites 
latiusculi densi pusilli virides ditissime fructiferi; caulis perpusillus 
paucifolius; surculus sterilis simplex perfecte plumosus complanatus, 
foliis 8-jugis minutis e basi angustiore oblique ovatis breviter acu- 
minatis viridissimis, nervo pro foliolo distincto curvato ante summi- 
tatem folii evanido exaratis minute crenulatis, ad laminam veram 
angustissime limbatulis, minutissime occulte areolatis, cum lamina 
dorsali angıusta supra basin folii oriunda; surculus fertilis foliis per- 
paucis, inferne minutis vaginaceo-appressis acuminatis, perichaetialibus 
multo majoribus e basi latiuscula grossius et diaphane areolata 
vaginacea in acumen longiusculum strietum breviter acutum exeunti- 
bus, nervo distincto in acumine evanido exaratis; theca in pedun- 
culo pro plantula longiusculo tenui flexuoso aurantiaco plus minus 
arcuato parva erecta oblonga ochracea ore aurantiaca truncata, oper- 
culo e basi conica oblique rostellato,; peristomii dentes valde incurvi. 
Habitatio. Argentinia temperata prope Buenos Aires: R. 
Hauthal in Museo de La Plata 1892. Dr. Otto Kuntze misit 
1894. Prius legit Fruchart in Montevideo prope La Paz (Hb, 
Bescherelle): Fissid. semilamellosus C. Müll. in sched. 
1. Var. minor, foliis minoribus atque theca minore. Fissidens 
colonialis C. Müll. in sched. La Plata: Dr. Spegazzini leg. et misit. 
2. Var. gracillima, foliis multo angustioribus atque theca mi- 
nore. Fissid. semilaminatus C. Müll. in sched. La Plata: Dr. 
Spegazzini 1886 misit. 
3. Var. obtusatula, foliis minoribus obtuse acuminatis. Fissid. 
anacamptodes Bescher. in sched. 1885. Montevideo: Gibert, 
multo prius autem (1874) Prof. Arechavaleta in Hb. Lund., unde 
1886 accepi. 
4. Var. angustissima, foliis praesertim lineali-oblongis. Fissid. 
stoloniferus C. Müll. Hb. Concepeion del Uruguay in Entrerios, in 
terra; P’@.sLoörentz 1877. 
