DENDROCEROS. 
Ot 
~J 
r= 
hine in labium lingueforme protracta, papillosa, carnosa 6-strata. 
Pedunculus brevis, semper fere immersus, basi intra involucellum 
oblongum carnosum receptus, pallidus, cellulis tristratis (6 in dia- 
metro), intermediis chlorophyllosis (corpusculo opaco farctis) con- 
flatus. Capsula semiemersa, involucro longior, lineari-cylindrica, 
rufa, bivalvis; columella filiformis persistens. Elateres mediocres 
obtusi, fibra spirali preelata impleti. Sporee majuscule asperule. 
Antheridia in costee utroque margine uniseriata, sepe florem @ 
approximata, solitaria, subglobosa, brevistipitata, simgula e mam- 
milla alté apice demum ruptd, emergentia. [Adsunt etiam, subter 
frondem ad costam sparsa, corpuscula nigra globosa cellulosa, materie 
grumosa repleta: anne Nostocis species ?]. 
Var. simplicior, fronde semel pinnatitida, aliis ramis interdum furcatis.— 
Pard, in palmarum arborumque truncis; Chimborazo, in folio vivo 
(alt. 1200™).° 
2. DENDROCEROS FOLIATUS, Spruce. 
Hab. Ad arbores in sylva Canelos, loco Cuesta de Mapoto, prope fluvium 
Pastasa. 
Frons 5™™ lata; coste sectio 10-12 x 0°25 c. pagine z4—-s ; vol 8:0 x 0°63 
caps 15°0 x 0°45 ; elat 3-45 spore J™™. 
Robusta czespitosa viridis. Frondes 2™ longee, basi palmatim divisee dein 
pinuatifidee, laciniis brevibus prielatis simplicibus furcatisve; costa 
valida, lata, plano-convexa, medio 8 cellulas crassa, basin versus parce 
radicellifera; pagina utrinque 2™™ Jata, in “folia” subeequimagna 
late reniformia sinuato-lobulata insigniter replicato-crispa profunde 
(raro ad costam usque) fissa; cellule mediocres parvuleve, plerumque 
quadrat, interstitiis incrassatis tetragonis ad angulos fulcite. 
Flores monoici: 2 antici, infra costee apicem orti. Involucrum cylindri- 
cum, viscidum subpapillosum, medio 3 vel 4 cellulas crassum, apice 
hine in Jabium rectum protractum. Pedunculus paulo brevior, basi 
bulbosus. Capsula maxima, involucro duplo longior, basi sola im- 
mersa, cylindrico-subulata, rufa, bivalvis vel uno solo latere dehiscens. 
Elateres pallidi debiles, helice lata apice subevoluta farcti. Spore sat 
magne scaberule. 
Antheridia ad laciniarum costam subbiseriata, solitaria maxima stipitata, 
raro 2—3na et minora. 
Var. megalospora: fronde crispatissima, costa preelata rufescente, sporis 
maximis (4;-7-"™) sublievissimis; elateribus fragilibus minus, per- 
fecte spiralibus.—Antombos, in ripis ejusdem fluvii Pastasa. 
Obs. Dendroceros foliatus, with the frond cloven almost down to the 
midrib into broad imbricated laciniw, resembling separate leaves, is the 
analogue of Symphyogyna Brongniarti var. pinnatipartita, of Aneura 
trichomanoides, and of Metzgeria bracteata. —These species, and a few others, 
may almost claim the possession of distinct leaves, and, placed by the side 
of a Jungermania with longitudinally-inserted leaves, such as Cephalozia 
(Alobiella) integrifolia, show how easy is the transition from a frondose 
to a foliose stem. 
XLIX. ANTHOCEROS, Mich. Gen. (1729). 
Frondes plerumque orbiculares, radiatim lobate, planiuscule vel 
in centro depresse ; costa prelata cum pagina utrinque confluente et 
