Porotrichum. | 15. NECKEREX. 461 
4. P. Lopert (Hampe in Ann. Sc. Nat. ser. 5. v. 341, Pilotrichum). 
Sureulus longe repens, prolifer; caulis humilis, erectus, dendroideo-pin- 
natus, basi nudus, ramis brevibus subdistichis flabellam ovatam vel trian- 
gularem formantibus. Folia dense imbricata, cucullato-concava, apice 
denticulata, nervo mediocri supra medium evanido, cellulis linearibus, 
versus apicem folii brevioribus hyalina, basi parum auriculata cellulis 
parvis intense aureis dense confertis notata.— Hampe, l. c. 
Hab. Andes Bogotenses, Pacho (2200 metr.), Lindig. 
P. nitidum et P. Lindigii ambe species ex affinitate P. filicini sed 
satis diverse, inter generis incertes adnumerande.—Hampe, l. c. 
These two species are compared, as it would seem, to the 
Neckera filicina of Hedw. ; but the descriptions appear to indicate 
rather a greater affinity to Porotrichum superbum, which, in some 
states, is much more compact and has leaves very much hollowed. 
5. P. PLICATULUM (Mitt.). Rami graciles, stipite foliis triangularibus 
reflexis sparsis vestito, superne in frondem lanceolatam triangularemve 
decrescenti-pinnatim divisi. Folia undique patentia compressave, superne 
plieis plus minus evidentibus longitudinaliter exarata; ramulina con- 
formia, nervo infra apicem abrupto ibique dorso prominulo, margine infra 
medium usque ad basin recurva, superne serrulata, cellulis elliptico- 
oblongis, parietibus angustis, limitibus minute nodulosis. 
Hab. Ins. Trinidad, in sylvis Arima, Purdie; Chaguanas, Black. 
Rami 1-13 unciam alti, interdum ramulos filescentes prodentes. Folia 
rigidula sed tenera. 
6. P. LonetrostRuM (Hook. Musc. Exot. t. 1, Neckera). Rami in- 
ferne nudi vel foliis ovatis acuminatis patenti-recurvis remotis, superne 
rami breves vel longiores in frondem bipinnatam divisi. Folia supe- 
riora compressa, distiche patentia, planiuscula, serrulata, nervo infra 
apicem evanido ; ramulina oblonga, acuminata, argutius serrata, basi latere 
inferiore inflexa, omnia cellulis oblongis areolata ; perichztialia interiora 
elongata, erecta, convoluta, breviter nervata, oblonga, subulato-acuminata, 
exteriora brevia apicibus recurvis. Pedunculus elongatus. Theca ovalis, 
erecta suberectave, operculo subulirostro, peristomii interni processibus 
perforatis, in membrana ad tertiam partem dentium longitudinis exserta 
impositis. S 
Hypnum floridum, Tayl. in Hook. Lond. Journ. vi. 339. 
Hab. In jugis Andium regionis temperate, Humboldt et Bonpland. 
Andes Bogotenses, in sylvis supra Pacho, ad arbores (6000 ped.), Weir, 
n.258. Andes Quitenses, Jameson, in sylva Canelos et monte Guayra- 
pata, in terra lignisque (4000-9000 ped.), Spruce, n.1361; in sylva 
Canelos ad rivulum Verde (4500 ped.), Spruce, n. 1362 ; in sylva Llalla 
(9000 ped.), Spruce, n. 1363. 
Rami stipite unciali vel longiore, in frondem nunc abbreviatam ramulis 
paucis latis foliis magnis divisi, vel ramulis pluribus confertis attenuatis 
