the Genus Strep top ogon. 131 
subrectangular. Their size is somewhat variable ; in three 
leaves taken from the upper part of the same stem of an 
authentic specimen of 4 5 . Schenckii ’ the cells measured 
(1) 50x2 5ju; (2) 30 to (rarely) 40 x 20-25 m; (3) 3°~5° 
X 20-25 n. The cell-walls are usually minutely thickened 
at the angles ; sometimes in old leaves they are distinctly 
porous throughout. As the margin is approached the cells 
become smaller and gradually assume a shortly rectangular 
shape. At the margin we find one or more rows of quadrate 
or shortly rectangular cells ; the cell-walls of these rows 
are sometimes slightly thickened and yellowish in colour. 
Towards the nerve the cells become much laxer and are 
hexagono-rectangular in shape. 
The specimen of ‘ S. Calymperopsis ’ I have seen is from 
Muller’s herbarium, and is labelled ‘ Bolivia ; Tipoami a Apa- 
loberuba (Weddel, 1878).’ It consists of a few stems, the 
apical leaves of which bear globose heads of gemmae as 
shown at Fig. 89. A close comparison of the plant has 
convinced me that it is identical with ‘ Schenckii ' 
(S. rigidus). 
With regard to ‘ S. calymper tides' also I can find no 
characters separating it from rigidus. The specimen I 
have seen is from Muller’s herbarium, and is labelled ‘ Costa 
Rica, Prov. de Alajuela (Dr. H. Polakowsky, June 1875).’ 
It consists of four barren stems and one branched stem 
bearing a single old capsule. The upper leaves on the barren 
stems are rather long and flexuoso-incurved in the dry state, 
and in every respect agree with those of ( S. Schenckii ’ 
(S rigidus ). I was not able to observe the shape of the 
perichaetial leaves, as these are almost completely destroyed 
by some parasitic growth ; the other leaves of the fertile 
plant are gemmiferous, and of the characteristic shape for the 
present species. The erect subcylindric capsule measures 
2-25 x 0-70 mill, and is borne on a seta, twisted to the right 
when dry, 5 mill. long. The capsule is evidently old, and is 
without an operculum ; a true annulus is present, separating 
on pressure from the mouth of the capsule. Dr. Hennings 
K 2 
