388 13. HOOKERIER. [ Pilotrichum. 
4. P. RAMOSISSIMUM (Mitt.). Rami gracillimi, inferne nudi proliferi, 
superne in frondem arbusculoideam ramulis copiosis gracillimis tripinnatim 
divisi. Folia parva, imbricata, cymbiformi-concava, basi excavata, nervis 
inzqualibus, uno longiore ad 2 folii longitudinis producto dorso apice 
aculeiformi exstante, altero breviore apice angustiore vix exstante, mar- 
ginibus planis reeurvisve suberenulatis, cellulis in folii medio oblongis 
ovoideisve, ad margines basique ad angulos brevioribus subrotundis, limi- 
tibus prominulis papilliformibus; ramulina ovata, nervo uno longiore 
dorsoque magis cristato serrulato; perichetialia externa lanceolata obtu- 
siuscula, interna subulata, marginibus reflexis fere integerrimis. Theca in 
pedunculo vix longiore, ovalis, operculo subulato, peristomii externi denti- 
bus angustis, interni processibus angustis zequilongis punctulatis, in mem- 
brana brevi exsertis. 
Hab. Andes Bogotenses, in sylvis supra Pacho (6000 ped.), ad corticem 
arborum levem, Weir, n. 133. 
Rami 2-4-unciales, rigidi, inferne denudati fusco-nigri, superne valde 
ramosi. Folia parva, in ramulis distincte trifarie imbricata et sepe in 
spiram laxam torta. 
Habitu P. bipinnato subsimile, sed ramulis copiosioribus gracilioribus 
rigidioribus distinctum. 
5. P. BIPINNATUM (Schwegr. t. 88, Neckera). Rami spe stipitati. 
Folia imbricata, compressa, lateralia complicato-carinata, superiora ex- 
cavata, nervis dorso prominulis sub apice in aculeo exstantibus, interdum 
ex apicibus radicelliferis, marginibus subcrenulatis erectis angustissime 
recurvisve, cellulis omnibus elongatis ellipticis; ramulina pentasticha 
conformia, marginibus nervisque distinctius crenulatis ; perichzetialia ex- 
terna ovali-elliptica, interna elliptico-lanceolata obtusiuscula, breviter 
nervata, marginibus recurvis. Theca in pedunculo ea paulo longiore sub- 
levi, ovalis, operculo conico acuminato, peristomii dentibus pallidis, interni 
processibus :equilongis carinatis, apicibus ad apices dentium adhzrentibus, 
basi in membrana brevi exsertis; calyptra ramentis parvis pilosa. 
Hab. Ins. Jamaica, Wilson; Trinidad, Purdie, Crüger; Guadelupe, 
Bertero; Coybe, Seemann; Guiana, Appun, Richard; Surinam, Herb. 
Dozy et Molkenboer ; Ecuador, Seemann. | Fl. Amazon, Pará, ad ramulos 
in sylvis, Spruce, n. 699, et loco Tauaá, Spruce, n. 700; fl. Pastasa, Spruce, 
n. 696; fl. Negro, S. Gabriel, Spruce, n. 689; S. Carlos, ad rivulum 
Cauapuna, Spruce, n. 690. Andes Quitenses, Chimborazo in sylvis Cin- 
chonz (3000 ped.), Spruce, n. 691; fl. Bombonasa (1200 ped.), Spruce, 
n. 692; Llalla (9000 ped.), Spruce, n. 695. Andes Peruviane, Tarapoto, 
in rivulum Shillicaio (1500 ped.), Spruce, n. 693; Tarapoto (1500 ped.), 
Spruce, n. 694; ibidem ad rivulum Marona-yacu (2000 ped), Spruce, 
n. 697. 
Rami 2-6-unciales, decrescenti-bipinnatim ramosi, basi stipite brevi. 
Folia pallide viridia, plus minus fulvescentia. 
