— 8o — 



3. A capsule with calyptra, enlarged. 



4. Peristome teeth with adjacent cells of exothecium. 



5. 6. Two stomata, phaneropore (60 to 75 yu in diameter, showing the conflu- 



ence of the guard cells). 



7. A leaf entire, showing the wavy edges of the lamellae. (Leaves are 2 to 

 4 mm. long). 



a, b, c. Cells from near leaf base, middle and apex respectively. (Cells 

 near base measure 14 to 16 fx wide, and 3 to 4 times as long as wide. The 

 irregular, usually isodiametric, sometimes square cells about the mid- 

 dle of the leaf are 16 to 20 jj, in diameter). 



8. Section of costa near leaf base, showing the complete disappearance of 

 the lamellae. 



9. Leaf section about the middle. 



10. A part of a stem section. (Stem is round-triangular, and about 350 // 

 in diameter). 



CATHARINEA (PSILOPILUM) TSCHUCTSCHICA. 



Carl Miiller in Botanisches Centralblatt, Band 16 (1883), p. 93. 

 By John M. Holzinger. 

 "Dioicous; very close to Psilopilum glabratum {= P. arcticiiin Brid. 

 Vide, Limpr, Laubm. 2: 602), and similar to it, but larger, stouter, and 

 blackish; stem leaves less closely appressed, open, longer, very entire^ the 

 areolation at base consisting of wide rectangular cells with thin walls (not 

 of elongated irregular cells with delicately membranaceous walls) ; strongly 

 convolute at the apex, ending in a short-incurved apex, the perichaetial 

 leaves very similar to the stem leaves (not longer, nor at base more mem- 

 branaceous) ; capsule larger, less curved, pale, membranaceous, with longer 

 teeth. 



"Type locality: the peninsula Tschuctschica, St. Lorenz Bay, Aug. 12, 

 1881; Pooten, Aug. 28, 1881; Liitke Harbor, Aug., 1882. 



"This plant differs at the first glance so considerably from Catharinea 

 glabrata that it is at once felt to be different from it, and this partly be- 

 cause of larger cohering cushions, the diverging larger leaves, and the larger 

 pale fruit with thin walls. The essential differentiating character however 

 is in the basilar part of the leaf, and is quite distinctive, as above described. 

 It is certainly an interesting addition to the arctic mossflora." 



In this translation Catharinea glabrata is another name for Psilopilum 

 arcticicm Brid. Limpricht, in Laubmoose 2: 602, writes for this plant Psilopi- 

 lum laevigatum (Wahlenb.), citing curiously enough the following syn- 

 onymy : 



1. Polytrichuin glabratum Wahlenb. (1803). 



2. Polytrichum laevigalufn Wahlenb. (1812). 



3. Catharinea glabrata Yloo^i. 



4. Catharinea leavigata Brid. (18 19). 



5. Psilopilum arcticu7n Brid. (1827). 



6. Oligotrichum laevigatum Bryol, Eur. (1844). 



7. Oligotrichum glabratujjt Lindb. (1879). 



