LEUCOBRYUM Hwrtr. 
6. LEUCOBRYUM MARTIANUM H»wrz. Linn. XIII. p. 42. Müzr. 
Linn. XVIII. p. 689. Syn. Musc. I. p. 76; Dieranum Mar- 
lianum Hwscn. fl. bras. p. 11. 
Habitat: in Surinamo, frequens, plerumque vero sterile; in truncis 
vetustis, semiputridis sylvarum, inter flumen Swrzmam et rivu- 
lam Para, late et compacte caespitosum ; in sylvis prope 
Jodeu-Savanna, Kxcrn nv. 743; — sine loco speciali, Aeró. 
Miqvzr, Aerb. D. e£ Mn.; specimina fructifera legit WxrcELT. 
ARTHROCORMUS D. et Ms. 
1. ARTHROCORMUS PULVINATUS D. et Ms. Planta perennis, 
pulvinato-caespitosa  albido-glaucescens, fragilis, epidendra, uberrime 
fructigera, e Leucophanearum ordine, Octoblepharum simulans. Caules 
adscendentes, tenues, fusci, dense foliosi, inferne foliis vetustis ut plu- 
rimum destructis omnino obtecti, valde radieulosi, cum vicinis caulibus 
in caespitem densum et compactum congesti, simplices vel innovando 
ramosi, articulato-flexuosi, ramis iterum innovantibus fastigiati. 
Folia subtrifariam dense imbricata, subsecunda, e basi erecta brevi 
oblonga amplexicauli vaginante inaequilatera tenerrima hyalina subito 
contracta, erecto-patula, linearia, elongata, leniter flexuoso-curvata, 
apice obtuso mucronulata ibidemque saepius radiculoso-prolifera, crassius- 
cula, opaca, antice planiuscula, dorso convexa, integerrima, fragilissima, 
costa destituta, nitoris fere expertia; areolatione in toto limbo et media 
baseos vaginantis parte compacta, neque uti in baseos alis ex unico 
strato conflata, e cellulis subquadrato-hexagonis parvis; areolatione 
marginali e cellulis uniserialibus, pellucidis, linearibus; areolatione ad 
utramque baseos alam cellulis minutissimis denseque confertis late lim- 
batam laxiori, e cellulis majoribus quadratis limpidissimis. 
