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PHYSCOMITRIUM.
PHYSCOMITRIUM nub. in litt. — Hampe Bot. Zcltg. 1837. — D e N o t a r i s
SÿUab.
GYMNOSTOMUM - PHYSCOMITRIUM et PYRAMIDIUM B r id . B r ÿ u l.
u n iv ers.
GYMNOSTOMUM H e dw ig . — S c h w â g r . — H o o k e r et T a y l o r e. c.
GYMNOSTOMUM c t PYRAMIDULA N. a b E s e s b . et H s c h .
Musci acrocarpi, humiles, annui, foliis latioribus, ovato-vel obovato-lanccolafis, remotis,
laxe reticulatis; capsula symmetrica, in collo brevi obtuse obconico subsphaerica,
brevius longiusve pedicellata et, una specie excepta quae pediccllum curvatum habet,
omnino erecta; calyptra juniore actate a basi angustata vesiculi modo inflata, pluries
plicata unde angulosa, in apiculum longum producía, mafuritatls tempore latere uno ad
apiccm usquc vel basi sola compluries fissa, cuculliformls vel erecta. Funarils, praeprimis
infantes, quam maxime similes, a Gymnostomis propriis toto coelo diversi.
Ca u lis primarlus siinplicissimus, flore masculo discoideo tcrminatus, tandem (amis
fertilibus singulis vcl compluribus ramosus, basi et ramorum insertione radicans.
F o lia 3—bsticba, inferiora remota, summa, quac majora, in comam patulam hexa-
phyllam conferta, omnia ovato-vel obovato-acuminata, tenera, ex cellulis magnis hexa-
gono-parallelepipedis composita, costa laxe cellulosa instructa.
F lo re sc en tia monoica; flores utriusque sexus terminales, patuli, foliis involucralibus
vel perichaetiaiibus proprie sic dictis nullis. Antheridia pusilla, ovali-oblonga, brevissime
pedicellata, parapbysibus longioribus apicem versus valde lucrassatis. Arclie-
gonia pauca, stylo mediocri terminata, parapbysibus carentia.
F r tic tu s cx codcm flore solitarius, raro binatus; capsula e collo brevi subglobosa,
pedicello erecto vcl curvato, pachyderma, peristomio annuloque destituta, sicca cyatbl-
forniis, operculo omnino convexo vel e basi convexa apiculato. Calyptra vesicularis,
laevis, in fructu perfecto obliqua vel erecta, capsulae solo vertice insidens vel, ut in
Ph. tetragono, totam capsulam includens, usque ad operculi lapsum persistons. Sporae
majusculae, tuberculosae vcl punctulatac, rufo-fcrrugincae.
BaroLoflU EunorACi. 1
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