438 
late exarata, e cellulis parvulis rotundatis pachydermis marginem 
versus minoribus et rnagis incrassatis dense reticulata; pericliae- 
tialia omnium majora latiora rosulatim patula; theca terminalis in 
pedunculo brevi flavo-rubente inclinata juventute oblonga evacuata 
globosa microstoma, operculo conico rostrato. Caetera desunt. 
Habitatio. Insulae Hawaiicae, AVest Maui, 5700 ped. altum: 
D. D. Bald win 1875; in loco non indicato legit Dr. W. Hille¬ 
brand 1870 speciem distinctam fructuum pauperam. 
Mnium rostratum Sulliv. et Mn. rhynchophorum Sulliv. in 
Exped. Wilkes p. 10 verosimiliter liuc pertinent. 
17. Polytrichum (Aloidella) Baldwini n. sp.; caulis perpusillus simplex 
vel parum divisus; folia pauca majuscula crispula madore patula, 
patentia vel reflexa, e basi angustiore lineari-lanceolata obtusiuscule 
acuminata, larnellis omnino fere occupata, lamina libera angustissima 
viridis in dentes breves membranaceos nec aculeatos excisa; peri- 
chaetialia longiora erecta; theca in pedunculo longiusculo longi- 
tudinem surculi parum superante Havo-rubente strictiusculo erecta 
breviter cylindrica tenuiter verruculosa macrostoma, operculo brevi 
conico, calyptra pro capsula majusculc campanulata pilosissima, 
peristomio brevi. 
Habitatio. Insulae Hawaiicae, West Maui 2500 ped. alt.: D. 
D. Baldwin 1875. 
Ex habitu Polytrichi aloidis caracteribus omnino Europaeis. 
An P. Junghuhnii Sulliv. in Exped. Wilkes p. 9? 
18. Rhizogonium (Pyrrhobryum) spiniforme Brid. 
Habitatio. Insulae Hawaiicae, Lanai: Dr. W. Hillebrand; 
East Maui, 3500 ped. altum: I). D. Baldwin 1875; quoque 
Exped. o Wilkesiana, sine loco natali. 
J. Angström in Yetensk. Akad. Förhandl. 1872 Nr. 4 p. 18 
sub nomine Rhizogonii latifolii Bryol. Javan. enumeravit. Species 
valde variare videtur in insulis Hawaiieis; nam quoque varietas 
pumila ab Hillebrand (in loco non indicato) et Baldwin 
(Olowalu crater in West Maui, 2000 ped. alt.) collecta est. 
19. Rhizogonium (Pyrrhobryum) pungens Sulliv. in Wilkes Exped. 
p. 28 t. 26. Cryptopodium bartramioides Angstr. in Yetensk. 
Akadem. Förh. 1872 p. 18. 
Habitatio. Insulae Hawaiicae, in districtu Puna ad litor. SW. 
a) Rhizogonium (Pyrrhobryum) nanum n. sp.; capituli per- 
breves tenelli lutescenti-virides; caulis pusillus semipollicaris superne 
in ramos perbreves curvatos divisus gracilis; folia laxe imbricata 
madore patula parva, e basi usque ad summitatem angusta lineari- 
lanceolato-acuminata, nervo crasso folioli occupante in subulam 
longiusculam parum curvatam evanescente exarata, remote bre- 
vissime duplicato-serrata, e cellulis rotundatis parvis diaphanis 
areolata. Caetera ignota. 
Habitatio. Nova Guinea austro-orientalis, Port Moresby, secus 
Humen Sancti Josephi: Lamberto Loria Novbr. 1892; Mo-roka, 
