102 CRYPTOGAMIA ANTARCTICA. l [Fuegia, the 
Has. Amsterdam Island, South Indian Ocean, Lieut. Smith, R.N. 
Found also in Campbell’s Island: 
C epa, Gea cloler oto — 
E 15. DIDYMODON, Hedw. 
1. Dipymopon capillaceus, Web. et Mohr, Bot. Tasch. p.158. Hook. et Tayl. Muse. Brit. p. 119. 
t. 90. Swartzia capillacea, Hedw. Muse. Frond. vol. ii. p. 26. 
Has. Hermite Island, Cape Horn; on sandy banks near the sea, St. Joachim's Bay. 
2. Drpvwopox /ongifolius. Trichostomum longifolium, Brid. Br. Univ. vol. i. p. 496. Trichostomum , 
pallidum, 8. strictum, Sehwaegr. Suppl. TI. vol. i. p. 77. t. 123? 
Var. 2. tenuifolius; foliis basi magis dilatatis membranaceis, nervo duplo latiore. 
Var. 3. penicillatus; caule fastigiato-ramoso, foliis longioribus erectis subquadrifariam imbricatis, nervo 
crassiore. 
Var. 4. curvifolius ; foliis subfalcatis secundis, e basi latiore sensim angustatis. 
Haz. Staten Land, 4. Menzies, Esq. (1787). Hermite Island, Cape Horn, vars. 1 and 4, abundant. 
South part of Fuegia, C. Darwin, Esq. Falkland Islands, var. 2, on the ground, rare in fruit; var. 3, on 
stones in streams, (barren). 
From Trichostomum pallidum our moss differs essentially in the inflorescence, in the dilated base of the leaf, 
stronger nerve, cylindrical capsule, and also in the structure of the peristome. The var. 2 has at times an elliptical 
theca. 
3. DinymonoN? glacialis, Hook. fil. et Wils.; caule ramoso fastigiato-ceespitoso, foliis erecto-patentibus 
apice incurvis fragilibus ovato-lanceolatis lineari-acuminatis solidinerviis. (Tas. CLII. fig. VL) 
Has. Cockburn Island, lat. 64° S. 57° W. (barren). 
Caules 4 lin. longi, ramis erectis. Folia e basi concaviuscula, repente in acumen lineare producta, vel nervo 
crasso longe excurrente, margine haud reflexa, areolis minimis, subrotundis, inferioribus majoribus pellucidis, e fusco 
lurido-viridia. 
One of the only three mosses which have hitherto been detected in a higher latitude than that of Cape Horn. 
Prats OLII Fig. VI.—1, tuft of the natural size; 2, branch; 3, 4 and 5, leaves :—all magnified. 
16, CERATODON, Brid. 
1. CBRATODON purpureus, Brid., Br. Univ. vol. i. p.480. FZ. Antarct. pt.1. p.131. Didymodon, Hook. 
et Tayl. Muse. Bot. p. 118. t. 20. 
Haz. Strait of Magalhaens, M. Jacquinot (in D’Urville’s Voyage). Falkland Islands, common on 
clay soil and on the sand-hills about Port Louis. Not seen on Hermite Island. 
A very abundant Antarctic plant in many situations. 
17. TORTULA, Hedw. 
We retain this name, instead of Barbula, for the following reasons: Schreber is the first authority for the union of 
the two Hedwigian genera Tortula and Barbula in the year 1791 (Gen. Plant.). He adopted the name Tortula which 
stands first in Hedwig’s arrangement for both. This fact is overlooked by Bruch and Schimper, who in their history 
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