142 5. TORTULE.. | Phascum. 
longiora 13-linearia. Theca diametro circiter } lineam metiens. Pedun- 
culus theca brevior, rarius longior vel curvatus. 
This species is so closely connected by European forms with 
Desmatodon (section of Tortula), that, excepting the persistence 
of the operculum, it scarcely differs from that group. 
34. Tortuna, Hedw. Fund. ii. 92. 
Musci humiles vel elati, graciles vel robusti, caulibus simplici- 
bus vel fureatis. Folia in speciebus minoribus acuminata, in 
majoribus obtusa, pilifera. "Thees cylindracer, anguste. Habitatio 
ad terram, etiam in saxis nec non in arboribus. 
I. BARBULÆ. Folia ut plurimum angusta, nervo rarius in pilum ex- 
currente, cellulis obscuris areolata. Peristomium basi breviter coa- 
litum. 
Sect. 1. Tricuostomum. Folia viridia, flavescentia. Peristomii dentes 
sepe abbreviati, recti v. vix torti, 
Flores dioici. 
Folia inferne subovata, sensim longe subulata, apice subcucullata. 
l. T. chilensis. 
Folia a basi brevi multo latiore subulato-angustata, apice anguste sub- 
ere E A JAMAICENSIS: 
Folia a basi subovata sensim longe subulato-angustata, apicibus obtu- 
MU METER Drive, AUT: BEANS 
Folia a basi oblonga amplexante hneari-acuminata. 4. T. andina. 
Folia a basi subquadrata, superne dilatata, sensim subulato-angustata, 
apice latiuscule acuta Enner D. T. contortifolia. 
Folia loriformi-linearia, apice acuminata ........ 6. T. brachydontia. 
Folia a basi brevi parum latiore longe linearia, apice acuminata. 
7. T. tenuirostris. 
Folia anguste linearia, nervo pallidiore in apiculum producto. 
8. T. Schlimü. 
Folia a basi latiore brevi-ovata longe lineari-subulata, sensim acuminata. 
9. T. canaliculata. 
Folia anguste linearia, sensim acuminata........10. T. australasie. 
Folia lanceolata, margine revoluta ............11. T. decolorans. 
Folia a basi brevi parum latiore longe loriformia, linearia, apice acu- 
TT TERRI E e xrx«eirerapeist cro 2 T. nears. 
Flores monoici. 
Folia lineari-ligulata, apice acuta ............-. 13. T. cespitosa. 
Sect. 2. HEgLICoPocGoN. Folia viridia v. flavo-viridia. Peristomii dentes 
sepius elongati, contorti. 
Nervus in mucronem brevem excurrens. 
Folia lanceolata, obtusa, plus minus lineari-elongata. 
14. T. Cruegeri. 
