New and Interesting South African Mosses. 
223 
Kiiysna, CP., coll. H. A. W. (No. 520). 
Quite distinct from the other S. African species of the genus, in the 
densely pinnate branching combined with the peculiarly toothed perichaetial 
leaves. B. pseudo-pojmleum (Schimp.) C. M., the description of which 
reads much like this, is really very distinct, being much smaller, with closer, 
much smaller and narrower leaves, shorter seta, short oval capsules with 
conical lid, etc. 
B. stricto-patens C. M. Grahamstown, CP., comm. C Webster (No, 773), 
c. fr. This agrees with C Mueller's description ; no specimens are in the 
Kew or British Museum collections, and I have not been able to compare it. 
B.plumosiforine Schimp. HoutBay, CP., 1916; coll. H. A. W. (No. 601), 
c.fr.; Hogsback,T3umie, CP.,1917; coll. D. Hend. (No. 360), c. fr. No. 601 
is a smaller plant in all its parts than the type plant in Schimper's collection, 
but the species varies considerably in form and direction of capsule, and also 
in the perichaetial leaves. 
Rhynchostegium hrachypterum (Hornsch.) Jaeg. Knysna, and George, 
CP., 1916 ; coll. H. A. W. (Nos. 521, 544), c. fr. ; Kowie,"^CP., 1915 ; coll. 
H. A. W. (No. 115), c. fr. Another very variable plant, in form of leaves, 
length and toothing of acumen, and form of capsule. 
EXPLANATION OF PLATES XI and XII. 
PL^TE XL 
FIG. 
1. Ditrichum spirale. (a) Plant, x 1; (b) leaf, dry, x 10; {c) apex of leaf, x 50; 
{d) upper cells of sheathing part, x 200 ; (e) supra-basal marginal cells, x 200. 
2. Dicranella Si/monsii. {a) Plant, x 1 ; {b) leaf, x 20 ; (c) leaf-apex, x 50 ; {cV) 
upper cells, x 200; {e) basal cells (with half nerve), x 200. 
3. Fissidens papillifoUus. (a) Leaf, x 20; (6) leaf apex, x 50; (c) upper and 
marginal cells, x 200. 
4. Gymnostomum Beiosii. {a, a) Leaves, x 20; (5) upper marginal cells, x 200; 
(c) basal cells, x 200, 
5. Bidymodon Pottsii. {a) Plant, x 1 ; {b, b') leaves, x 20 ; (c) upper cells, x 200 ; 
{d) basal cells, x 200. 
6. Didymodon afro-rabellus (dup. type), (a) Leaf apex, x 40. 
7. Tortula trachyneura. («) Leaf apex, x 40; (6) back of nerve, x 100. 
8. Zygodon Simii. {a) Stem, x 1; Xb, b') leaves, x 20 ; (c) upper cells, x 200. 
9. Bryum pumili-roseum. (a) Plant, x 1 ; {b, b') leaves, x 20; (<:•) upper cells, 
X 200. 
10. Psilopilum afro-laevigatum. {a) Plant, x 1; {b) leaf, x 20; (c) upper cells, x 200. 
11. (Rehm. M.A.-A., No. 150) Zygodon runcinatus. {a) Leaf, x 20; (b) upper cells, 
X 200. 
PLATE XII. 
12. Psilopilum Wageri (dup. type), {a) Plant, x 1 ; (Z») leaf, x 20; (e) upper 
marginal cells, x 200 ; {d) peristome teeth, x 100. 
