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XLVIII. Dendroceros, NeesPublished online: 01 Dec 2010.

To cite this article: (1884) XLVIII. Dendroceros, Nees, Transactionsof the Botanical Society of Edinburgh, 15:1-4, 573-574, DOI:10.1080/03746608409468209

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DENDROCEROS. 5 7 3

bens definita, pagince cellulis unistratis ad angulos insigniter incras-satis, gonidiis nullis. Capsula exserta. Elateres perfects spirales.

49. ANTHOCEROS. Frons orbicularis lobata laciniatave ad speciemecostata, cellulis plerisque gonidiiferis. Capsula exserta. Elateresraro spirales, pro m. solum flexuosi.

50. NOTOTHYLAS. A priore differt capsula subsessili apice solo emersa,elateribus geniculatis frustulatim disruptis.

XLVIII. DENDROCEROS, Nees.

Syn. Hep. 579. Anthocerotis sp. Raddi. Monoclea Hook. ex p.

Frondes late lineares, pinnatim ramosm, insigniter crispatmpagina tenuis unistrata, interdum in lacinias latas, folia simulantes,fissa, incrassationibus tetragonis ad cellularum angulos, gonidiisnullis ; costa perfecte definita, angusta, pluristrata, Flores monoici:

sicut in subordinis caractere supradescripti. Capsula pedunculata,involucro exserta. Elateres monospiri, perfecte helicoidei. Anthe-ridia in costa biseriata.

Hab. et Distr. Species paucm huic generi recte adscriptm inarborum cortice iino in foliis vivis vigent, extra zonam torridamforsan nullibi visor,

1. D. crispatus. Frons semel bisve pinnatifida, laciniis linearibus sinuato-erispis integris, anguste costatis. Capsula linearis, involucro paulolongior.

2. D. foliatus. A priore differt fronde plus duplo latiore, minus ramosa,late sed distincte costata, pagina utrinque in lacinias (folia simu-lantes) latas crispatissimas ad costam fere usque fissa ; capsula duplolongiore lineari-subulata.

1. DENDROCEROS CRISPATUS (Hook. ?) Nees.

Monoclea crispata Hook. Bot. Misc. I, 117, t. 271

Hab. In Andium Peruvim radicibus ad fluvii Huallaga ripas, juxtaYurimaguas et Tarapoto, arboricola.

Frondis lat. 1.2 ; costce sectio 0 . 3 x 0.1 ; c invol 6.0 x 0.4; ped 6 . 0 ;caps. vaiv. 8 . 0 x 0 . 3; elat. 4 ; sporce nn.

Amcene viridis, caespitoso-procumbens. Frondes 2cm longEe, assurgentes,bipinnatifidm, laciniis brevibus lato-linearibus contignis vel subim-bricatis, insigniter sinuato-crispis, valide anguste costatis, apice (scopefurcat o) truncato-rotundatis ; costa sectione semilanceolata oblongavemedio 8 cellulas crassa subtus parce radicellosa, ad ramorum inser-tionem geniculato-subflexuosa ; cellulae paginie unistratae mediocresquadrato-hexagonoe, ad angulos incrassationibus tetragonis fulcitm,intus flexuosce, endochromio copioso.

Flores monoici: antici, e costa versus ramorum furcas oriundi. In-volucra primum brevia, apice tenui, fundo oiigonium solitariumobclavatum foventia, matura lineari-corniformia erecto-incurva, ore

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574 DENDROCEROS.

hinc in labium lingunforme protracta, papillosa, carnosa 6-strata.Pedunculus brevis, semper fere imrnersus, basi intra involucellumoblongurn 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 liliformis persistens. Elateres mediocresobtusi, fibra spirali prtelata impleti. Sporte majusculm asperulm.Antheridia in costae utroqiie naargine uniseriata, supe floremapproximata, solitaria, subglobosa, brevistipitata, singula e mam-milla apice dernum rupta, emergentia. [Adsunt etiam, subterfrondem ad costam sparsa, corpuscula nigra globosa cellulosa, materiegrumosa repleta anne Nostocis species ?].

Var. simplicior, fronde semel pinnatifida, allis ramis interdum furcatis.—Pant, in palmarum arbormnque truncis ; Chimborazo, in folio vivo(alt. 1200m).

2. DENDROCEROS FOLIATES, Spruce.Hab. Ad arbores in sylva Canelos, loco Cuesta de Mapoto, prope fluvium

Pastasa.From 5" lata ; costa sectio 1.0-1.2 x 0.2 ; c. pagince 4 0 sa ; invol 8 . 0 x 0'6 ;

caps 15 .0 x 0 . 45 ; elat .3–.4 ; sporceRobusta caespitosa viridis. Frondes gem longae, basi palmatim divissT dein

pinnatifid, laciniis brevibus pr&latis simplicibus furcatisve; costavalida, lata, plano-convexa, medio 8 cellulas crassa, basin versus parceradicellifera; pagina utrinque lata, in " folia" subaquinaagnalate reniformia sinuato-lobulata insigniter replicato-crispa profunde(raro ad costam usque) fissa ; cellulae mediocres parvulve, plerumquequadrataa, interstitiis incrassatis tetragonis ad angulos fulcitm.

Flores monoici: antici, infra costae apicem orti. Involucrum cylindri-cum, viscidum subpapillosum, medio 3 vel 4 cellulas crassum, apicehinc in labium rectum protractum. Pedunculus paulo brevior, basibulbosus. 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 satmagnet scaberulu.

Antheridia ad laciniarum costam subbiseriata, solitaria maxima stipitata,raro 2-3na et minora.

Var. megalospora: fronde crispatissima, costa przelata rufescente, sporismaximis sublTvissimis ; elateribus fragilibus minus per-fecte spiralibus.—Antombos, in ripis ejusdem fluvii Pastasa.

Obs. Dendroceros foliates, with the frond cloven almost down to themidrib into broad imbricated laciniw, resembling separate leaves, is theanalogue of Symphyogyna Brongniartii var. pinnatipartita, of Aneuratrichomanoides, and of Metzgeria bracteata.—These species, and a few others,may almost claim the possession of distinct leaves, and, placed by the sideof a Jungermania with longitudinally-inserted leaves, such as Cephalozia(Alobiella) integrifolia, show how easy is the transition from a frondoseto a foliose stem.

XLIX. ANTHOCEROS, Mich. Gen. (1729).

Frondes plerumque orbiculares, radiatim lobatm, planiusculae velin centro depressoe ; costa prmlata cum pagina utrinque confluente et

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