54 



et ramulis turgidis, parce complanatis foliisque cymbiformi- 

 concavis raptim distinguendum. 



This pretty species resembles, in habitus and structure 

 of leaves, the species within genus Calyptothecium much 

 more than any of those hitherto known within genus Tra- 

 chyloma, and should, I think, rather be referred to the for- 

 mer than to the latter. As, however, fructiferous speci- 

 mens are unknown, this matter must be left undecided for 

 the present. 



50. Thuidium nano-delicatulum (Hamp.) Jaeg. Sauerb. 



Syn. Cyrto-Hypnum nano-delicatulum Hamp. Linnsea T. XL, 

 p. 323. 



Thuidium pennula C-Miill. in Bailey Syn. of the Queensl. 

 Fl. Third Suppl. p. 99 fnomen solum). 



Planta feminea robusta, rigida, viridis, setate fusca; 

 cauUs vaHdus, elongatus, reptans, pluries divisus, interrupte 

 radiculis terrse adfixus et alternatim arcuatim assurgens, di- 

 visionibus valde regulariter dense bipinnatis, pinnis 1,5-2 

 cm. longis, arcuatis, pinnulis subsequahbus, 2 — 5 mm. lon- 

 gis, supremis brevioribus, simplicibus vel rarissime indistincte 

 ramulosis; folia cauHna remota, squarrosa, phcata, e basi 

 dilatata, subcordata subito attenuata, nervö excedente lon- 

 gissime aristata, marginibus e basi ad medium plus minusve 

 revolutis, minute crenulatis, apice serrulatis, nervö crasso, 

 lutescente, in aristam validam, longissimam, serrulatam 

 producto, cellulis incrassatis, papillosis, pellucidis, ovalibus, 

 basilaribus longioribus, marginalibus subrotundis, ramulina 

 minuta, sicca adpressa, humida erecta, concava, ovato-lan- 

 ceolata, marginibus serrulatis, nervö pallido, infra apicem 

 evanido, dorso remote spinuloso, cellulis valde papillosis, 

 subrotundis, apicah truncata, papillis acutis coronata, para- 

 phyllia numerosa, confervoidea, ramosa, papillosa; hractem 

 perichcetii fuscescenti-lutescentes, e basi dilatata sensim in 

 apicem piliformem, longissimum, flexuosum exeuntes, margi- 

 nibus erectis, longissime et pulcherrime fimbriatis ciliis fili- 

 formibus, simplicibus, apice denticulatis, nervö angustiore, 

 cellulis longioribus, angustioribus, Isevissimis. Csetera ignota. 



