Falkhauls, etc.] ' FLOEA ANTAKCTICA. 103 



Hab. Falkland Islands ; on moist rocks on the bills, barren and stunted. 



4. Racomitrium lanuginosum, Brid. ; Bn/ol. Univ. vol. i. p. 215. Flor. Antarct. pt. 1. p. 124. 

 Bruch et Sc/iimper, Bryol. Europ. 1. e. p. 11. t. 6. Tricbostoninm lanuginosum, Hedw. Muse. Frond. 



vol. iii. t. 2. 



Hab. Falkland Islands; common on the bills, barren. Hermite Island, Cape Horn; also barren. 

 Strait of Magatbaens; D'Urville. 



This moss is very common throughout the Antarctic regions. The specimens from Hermite Island have the 

 leaves more obscurely toothed than British examples, and the branches very short. It may be R. Boricmicum, 

 Brid. (Br. Univ. vol. i. p. 218). 



10. OIITHOTEICHUM, Hedw. 



1. Orthotrichuji erassifolium , Hook. fil. et Wils.; see Part 1. p. 125. pl.lvii. f. viii. 

 Var. y, foliis superioribus ovato-lanceolatis acutiusculis. 



Var. 8, foliis subsecundis. 



Hab. Hermite Island, Cape Horn ; vars. 1 and 3, very common on maritime rocks of granite and trap. 

 Falkland Islands; var. 1, also on clay-slate. Kerguelen's Land; vars. 1 and 3 common. 



Both these varieties differ from the Campbell's Island state of the moss. 



2. Orthotrichum tuteolum, Hook. fil. et Wils.; caule erecto ramoso, foliis erecto-patentibus siccitate 

 crispulis anguste lineari-lanceolatis basi dilatatis margine planis, theca exserta ovali-oblonga siccitate sulcata, 

 calyptra pilosa. Orthotrichum coarctatum, Schwaegr. Suppl.I. 2. p. 26. t. 52 (excl. syn. Belvisian. ?). 

 Hook, et Grev. ! in Brewst. fourn. vol. i. p. 125 (nee Orth. coarctatum, Br. et Schimp. Bri/ol. Europ.) 

 (Tab. CLII. fig. II.) 



Var. /3. calyptra glabra. 



Hab. Hermite Island, Cape Horn ; var. a. and 0. on stems of shrubs, especially of Berberis iUcifolia, 

 from the sea to alt. 1,000 feet, abundant, forming round soft tufts, rare on rocks. South part of Tierra 

 del Fuego, C. Darwin, Esq., n. 440. 



Caules laxe pulvinati, luteoli, subunciales, ramosi. Folia conferta, erecto-patentia, curvula, anguste lineari- 

 lanceolati, basi dilatata, ovata, utrinque laxe et pellucide reticulata, margine plana, nervo rubello, areolis laxe punc- 

 tatis, luteola, siccitate parum crispula. Vaginula subpilosa, ovata, minuta. Seta longitudine varia foba perichse- 

 tialia plerumque aequans vel superans, siccitate striata, in collum capsulare sensim dilatata. Theca subpyriformis, 

 parva, pabide luteo-fusca, 8-striata, sicca et vacua cyUndracea, vix sulcata, ore haud constricto. Peristoma extend 

 dentes 8, bigeminati, siccitate renexi ; iuterni cilia. Calyptra campanulata, pilosa, straminea, in var. /3. glabra, 

 brunnea. Florescentia monoica. 



It will be seen bow closely the description corresponds with that of O. coarctatum, Br. and Schimp.; but on 

 comparing authentic specimens, we find the leaves in the latter much wider and carinate, less dilated at the 

 base, more crisped when dry, the vaginula twice as long, capsule larger, and the habit considerably different. 

 Our moss, unlike that, has very little resemblance to O. crispum, and is remarkable for its pale yellowish colour : 

 it varies in the length of the seta. An original specimen of O. coarctatum (from P. de Beauvois in Professor Arnott s 



