622 20. POLYTRICHE.E. [ Polytrichum. 
and New Zealand, are smaller in stature than the usual states of 
the species as it occurs in Europe, North America, the Atlantic 
islands, and Africa. 
8. P. nuBESCENS (Mitt.). Caulis elatus. Folia e basi erecta am- 
plexicauli subulata, linearia, angusta, patentia, apice obtusiuscula, mar- 
ginibus erectis superne remote breviterque dentatis, intus lamellis folii 
latitudinem totam occupantibus, nervo tenui dorso sub apice dentato, 
cellulis basi pellucidis elongatis angustis, superioribus rubris inde in 
parvas obscuras transverse oblongas subito mutatis. 
Hab. Andes Quitenses, Jameson. 
Caulis 7-8-uncialis. Folia inter se remotiuscula, basi in parte erecta 
rubra, nitida, in parte superiore obscure viridia, rufescentia. 
P. communis forme majori Europe simile, sed colore foliorum basis 
statim dignoscitur. 
9. P. ronMosuM (Hedw. Sp. Musc. t. 19). Folia e basi latiore erecta 
patenti-recurva, linearia, acuta, nervo dorso apice denticulato excurrente, 
marginibus dentatis, intus lamellata, cellulis basi elongatis angustis, su- 
perne subito in oblatas obscuras mutatis, marginalibus hyalinis angustis ; 
perichetialia caulina haud excedentia, e basi pellucida longiora, su- 
bulata, angustiora, nervo intus lamellato. Theca inclinata, oblonga, 
operculo conico rostrato. 
Hab. Mexico, Ruiz et Pavon in Herb. Hooker. 
10. P. ANGUsTIFOLIUM (Ott). Elatum. Folia densiuscula, a basi 
erecta, cauli appressa, medio superne flavo tincta, subito contracta, sensim 
subulato-angustata, acuta, patentia, canaliculata, margine ubique in parte 
subulata dorsoque dentibus aculeiformibus serrata, pagina interna lamellis 
brevibus obtecta. 
Hab. Brasilia Tropica, Burchell, n. 3768. 
Caules semipedales, graciles. Folia 5 lineas longa, viridia. 
11. P. ELoNGATUM (Beauv. Prod. 85). Caulis erectus, gracilis, longus, 
simplex et divisus. Folia linearia, subserrulata. Flores terminales. Theca 
erecta. 
Hab. Ad fretum Magellanicum. 
Caule elongato gracili, theca erecta et apophysi speciosa distincta, 
majore intervallo a sporangio distante a congeneribus e ratione auctoris 
dignoscitur.— C. Müll. Syn. i. 222. 
Tribus XXI. BUXBAUMIE. 
125. Dieuyscium, Mohr, Obs. 34. 
D. PERUVIANUM (Spruce) Subacaule. Folia patula, e basi angus- 
tiore concaviore spathulata, ligulata, planiuscula, nervo in mucronem ex- 
