616 20. POLYTRICHEX. [.Pogonatum. 
foliis brevioribus et latioribus et theca minore. Ad Catharinellas transit. 
—Hampe, l. c. 
9. P. RopusTuM (Mitt.). Caulis simplex elatus. Folia e basi brevi 
latiore erecta patentia, planiuscula, stricta, nervo rufo dorso sub apice 
parce dentato, marginibus fere a basi infima dentibus crebris serratis, intus 
tota superficie lamellis obtecta, cellulis basi paucis oblongis, inde in parvas 
obscuras rotundatas transeuntibus. 
Hab. Ins. Jamaica, Wilson. 
Caulis $-pedalis. Folia densiuscule inserta, 4-linearia, rigidiuscula. 
Primo visu a Polytricho communi Europe haud dissimile. 
10. P. suBcoxToRTUM (Hampe in Ann. Sc. Nat. ser. 5. iv. 349, Poly- - 
trichum). Caulis elongatus, 2-3-uncialis, adscendens, basi tenuis et nu- 
diusculus, superne laxe foliatus, subzqualis, parum clavatus, folia laxe 
imbricata, convoluto-canaliculata, incurva, inferiora patentia inflexa, supe- 
riora conferta, e basi late ovata vaginante lato-lanceolata, brevi spatio basi 
integerrima, versus apicem tandem latere inferiore ab medio vaginz 
modice dentato-serrata, in acumine grosse sinuato-serrata; nervo basi 
fuscescente, opaco, laminam totam occupante, lamelloso-striato; cellulis 
basilaribus elongato-quadratis, lateralibus et intermediis densioribus mi- 
noribus, angulato-quadratis vel rotundatis, sordide flavescentibus. Seta 
apicalis, adscendens, uncialis et paulo longior, apice tortilis, rubens. Theca 
parvula, oblongo-cylindrica, subferruginea, operculo umbonato conico- 
subulato cruento, peristomii dentibus brevibus angustis albidis; calyptra 
aurea, normalis. ` 
Hab. Andes Bogotenses, Chapinero (2700 metr.), in umbrosis humidis 
eum P. andino, Lindig, n. 2044. 
Mihi ex icone Schweegr. t. 96, imperfecta solum cognitum ; P. contorto 
proximum, ab eo peristomii dentibus albidis hyalinis satis differt ; inter 
P. semipellucidum et P. purpurascens quasi intermedium.— Hampe, l. c. 
ll. P. PunPURASCENS (Hampe in Linnea, xxxi. 148, Polytrichum). 
Gregarium, laxe czspitosum, 2—4-unciale, gracile, fusco-purpurascens ; 
caulis adscendenti-erectus, basi attenuatus, nudiusculus vel microphyllinus, 
versus apicem accrescendo anguste clavatus, laxe foliatus. Folia brevia, 
convoluto-incurvata, tortilia, laxe accumbentia vel patenti-flexuosa, hu- 
mida erecto-patula, cucullato-coneava, e basi brevi latiore integerrima, 
diaphana, lato-lanceolata, margine basi diaphano, superne obscuro, dorso 
quoque spinuloso-dentata, nervo ad basin valido, quali, obscuro, in 
lamina dilatato, eam fere totam occupante, cellulis basilaribus elongato- 
quadratis, interstitiis nodulosis interruptis, intermediis minoribus angu- 
lato-rotundatis ad marginem condensatis punctatis. Seta uncialis et 
longior, erecta, rubra, apice tortilis. Theca parva, e basi conica oblongo- 
cylindrica incurva, sub ore parum contracta, octies angulata, ferruginea, 
operculo umbonato-conico rostrato, brevi, sanguineo, peristomio P. sub- 
contorti, calyptra aurea. 
