119. 
tomum 
3, 0 
common ot 
Falklands, etc. CRYPTOGAMIA ANTARCTICA. 103 
of this genus (Bryol. Europ.), rely chiefly on the authority of Bridel in support of Barbula. But Bridel’s authority 
is in favour of Tortula, for he adopted it in his earlier work. It was discontinued by him in 1819 (Mantissa) under the 
erroneous impression that the name had been legitimately given to a phenogamous genus; whereas Barbula had 
been applied nine years before by Loureiro to designate a Chinese shrub. Hence Schrader, Sibthorpe, Swartz, 
Roth, and all British writers on Mosses, retained Zortula, a name which would be at present unoccupied if not 
employed in conformity with the views of Hedwig and Schreber. 
1. Tortura densifolia, Hook. fil. et Wils.; caule humili subdiviso, foliis patentibus confertis lanceolato- 
acuminatis acutis marginatis apice serratis solidinerviis, theca oblonga, peristomii dentibus contortis, membrana 
basilari breviuscula, operculo subulato. (Tas. CLIII. fig. I.) 
Has. Falkland Islands, on clayey rocks near the sea at Port Louis, scarce. 
stricta, lanceolato-subulata, acuta, subcarinata, rigidiuscula, margine cartilaginea vix incrassata, apice dentato-serrata, 
nervo valido. rubello, lutescenti-viridia, areolis opacis minimis, basi majoribus subdiaphanis ; pericheetialia minora 
erecta. Seta 6—8 lin. longa, tortilis, fusca. Theca oblonga, erecta, fusca. Peristomii dentes basi membrana latius- 
cula conjuncti, rubelli. Operculum subulatum, capsule longitudine. Calyptra dimidiata, fusca. 77 mates — 
The only described species with which this can be compared is Barbula marginata, Bruch and Schimp. (Bryol. 
Europ.) ; but that is a smaller moss, having leaves not at all acuminated, and an excurrent nerve. 444.0 4 Fa 
Puate CLIII. Fig. 1.—1, tuft of the natural size; 2, leaf; 3, apex of ditto; 4, thece :—magnified. 
9. Torruta robusta, Hook. et Grev.; caule elongato subramoso, foliis patulo-recurvis lanceolatis sub- 
carinatis acutis apice serratis solidinerviis, theca cylindracea curvula, peristomii dentibus contortis tubo ad 
tertiam partem producto, operculo subulato. T. robusta, Hook. et Grev. in Brewst. Hd. Journ. vol. i. p. 299. 
t.12. (Tas. CLIII. fig. IT.) 
Var. 8. foliis laxioribus viridibus. 
. Has. Hermite Island, on sandy ground amongst grass at the head of St. Joachim’s Bay, forming large 
patches. Var. 8. Falkland Islands, common in moist sandy places (barren). 
Dioica, ceespitosa. Caules sesquiunciales, robusti, ramosiusculi. Folia lanceolata, vix acuminata, patentia, recurva, 
subcarinata, acuta, apice serrata, margine recurva, flavescentia, nervo tenui saturatius colorato percursa, siccitate erecta, 
incurva, subtortilia, areolis subrotundis, basi majoribus diaphanis, perichsetialia similia erecta. Sefa uncialis, sinis- 
trorsum tortilis, rubella. Zeca cylindracea, suberecta, curvula, rufo-fusca, ore rubello. Annulus persistens, albidus. 
Peristomi tubus basilaris dentium tertiam longitudinis partem sequans, albidus, dentes contorti, pulchre rubelli. 
Operculum subulatum capsula dimidio longius, flavescens. Calyptra dimidiata, castanea. 
From all the European Syntrichie this species is distinguished by the serrated leaves. In size and general 
aspect it is not unlike Barbula Mulleri, Br. and Schimp. 
After careful examination of the original specimens of Tortula robusta and T. serrulata, we have reason to believe 
that one, if not both, of these mosses is the same species as our Antarctic plants, differing only in the narrow leaves ; 
but they are in too imperfect a state to determine very satisfactorily. The figure of 7. robusta represents the leaves 
much too widely spreading, and they are also serrulate at the apex, just as in T. serrulata. 
Pyare CLIII. Fig. 1.—1, plant of the natural size; 2, leaf; 3, theca; 4, sper of theca and peristome :—all 
magnified. 
3. Torruta Mulleri. Barbula Mulleri, Bruch et Schimp. Bryol. Europ. fasc. 13-15. p. 44. t. 28. 
Has. Falkland Islands, on sand-hills near the Lagoon at Uranie Bay. 
Acct ned, f ler in 
Dioica? Caules 4-6 lin. longi, laxe ceespitosi, subdivisi. Folia dense conferta, basi erecta, dein patentia, 
Ale, - 
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