POTTIOIDEAE. GLYPHOMITRIUM. BRACHYSTELEUM. (49 
Gen. XVII. Glyphomitrium Brid. I. p. 765. 
Calyptra campanulata magna, thecam totam in- 
cludens, profunde laciniata, plicata. Perist. simpl. 
d. 16 breviter lanceolati integri linea media exarati 
per paria approximati. 
Gen. XIX. Brachysteleum Rchb. 
anno 1828! — Ptychomitrium Bruch, a Fürnrohr descriptum in 
Regensb. Bot. Zeit. 1829. 11. Ergünzungsblátter, p. 19. 
Calyptra Glyphomitrii, thecam omnino vel fere 
obtegens. Perist. Trichostomi. 
6. B. Sellowianum C. Müll. L p. 769. 
Patria. Brasilia, prov. St. Catharinae: Blumenau. 
Gen. XX. Gümbelia Hmp. I. p. 770. 
Calyptra dimidiata. —Perist. simpl. dentes 16 
lanceolati integri, linea divisurali notati, fissiles, 
cribrosi et (in Cinclidotonte) in cilia numerosa bar- 
buloidea fissi vel nulli. 
Sectio I. IPlatystomium C. Müll. — Theca macrostoma im- 
mersa urnigera; plantae orbiculariter pulvinatae terminales ; plantae 
terrestres. 
Sectio Platystomati generis Grimmiae similis. 
1. €. laxa C. Müll. I. p. 771. 
9. G. ambigua C. Müll; monoica exigua pulvinato- 
cespitosa; caulis parce ramosus; folia oblongo - lanceolata 
patulo -incurva, apice plus minus cano =pilifera ; “perich. 
multo majora erecta, elliptico - lanceolata, in pilum hyali- 
num grosse dentatum producta fere suae longitudinis ; 
theca immersa oblongo - ovalis, operc. convexo - conico bre- 
viter rostrato; calyptra cuculliformis. +. 
Schistidium ambiguum Sulliv. Mem, of the Amer. Acad. of Arts 
and Sc. IV. New. Ser. 1849. p. 170. 
Patria, Ad rupes siccas pr. Santa Fé in New - Me- 
xico: Fendler. 
