ka a. nt de ne a ai ae 
Contributiones ad Bryologiam austro-afram, 69 
boideis superne hyalinis inferne flavo-virentibus basi majoribus paren 
chymaticis reticulata; perichactialia appressa anguste oblongo-acumi- 
nata in pilum longum strietum indistinctius denticulatum carinatum 
nec teretem attenuata, nervo angusto flavo basi purpureo exarata, 
e cellulis multo laxioribus inferne purpurascentibus reticulata-flaccida; 
theca in pedunculo longo flexuoso rubente nutans minuta oblonga 
constricta, operculo cupulato apiculato, annulo revolubili; peristomii 
dentes externi breviter subulati valde trabeculati lutei, interni breves 
angusti valde hiantes, ciliolis brevibus binis adhaerentibus parum 
appendiculatis; sporae minutissimae flavae. 
Habitato. Transvaal, Spitzkop prope Lydenburg, Febr. et 
Aprili 1887: Dr. Wilms in Hb. Jack, qui misit 1889; Darprivier 
Wasserfall prope Lydenburg, Oct. 1884. 
Ramulis perbrevibus turgescenti-julaceis obtusis squarrosulo- 
foliosis foliis majusculis in pilum recurvum denticulatum protractis, 
theca minuta valde constricta, operculo cupulato apiculato peristo- 
mioque brevi distinguendum. 
47. Bryum (Sclerodictyum) promontorii.n.sp.; dioicum, 
cespites lati decumbentes vel prostrati lutescentes nitiduli inferne 
densiuscule superne laxe cohaerentes rigidissimi; caulis pollicaris vel 
brevior teres julaceus brevissime cuspidatus in ramos plus minusve 
longiusculos similes divisus tenuis; folia caulina cartilaginea den- 
sissime imbricata e basi brevi laxe tenuiter reticulata pellucida vel 
dilute purpurascente latiuscula in laminam late ovatam brevissime 
obtuse acuminatam integerrimam flavidam cochleariformi concavam 
producta, nervo crassiusculo vel angustiore basi purpureo superne 
pallido in apice abrupto percursa, e cellulis longiusculis conflatis flavis 
reticulata; perichaetialia superiora multo angustiora lanceolato-acumi- 
nata acutiora, longius laxius reticulata,; theca in pedunculo elongato 
arcuato-flexuoso nutans minuta, e collo longiusculo cylindrico-oblonga 
angusta, operculo conico rubro nitido, annulo revolubili; peristo- 
mium breve flavum; dentes interni lutei angusti hiantes, citiolis 
appendiculatis binis. 
Mielichhoferia procerrima Rehm. in Musc. austro-afric. No. 214; 
forma sterilis prostrata. 
Habitatio. Africa australis, in monte Witteberge supra Kadzi- 
berg: A. Rehmann 1876; Transvaal, Lydenburg, Aprili 1887: 
Dr. Wilms in Hb. Jack, qui misit 1889, forma fertilis minor. 
48. Bryum (Platyphyllum) leucothrix n. sp.; cespites 
robustissimi pollicares basi tomentosi; caulis inferne nudiusculus 
parce radiculosus, hic illic foliis minoribus erecto-patulis ovato-acumi- 
natis plus minusve integerrimis vix vel haud marginatis laxe reti- 
culatis, nervo carinato angusto dissoluto exaratis obtectus; apice 
rosulam majusculam robustam clausam humore valde discoideo-evo- 
