11
Ii
.
¡ilicatis, cell, pro more rotuudat.; theca e.xserla ct immersa: perist. simpl
dupl. vel nullum.
Subsect. I. P t e r i g y n a n d r u m H e d w . e parte. Caul, siccit. perfecte jula.
ceus, perichaetiis longius exsertis, fol. ovate vel lanceolate aciiniinatis,
saep. cochlearif., cell, oblongis vcl linear, elongatis (P te ro g o n ium Bryol
eur., B ra u n ia . et Hedwigidium ibid. etc.).
Subsect. II. E i i l e u c o d o n M. Caulis teres vel homomallophylliis, dichot,
divisus, perieli, longe exsertis, foliis ovate v. lanceolate acumiiialis concavis
distincte plicatis; per. simpl. vel duplex (Leucodon, A n titric h ia etc.).
Subsect. III. La s i a B rid. Caulis pinnatlm divisus compressus, ramis palen-
tibiis rectis, foliis acuminat. laevius plicatis, cell, oblongis. Perieli, exset-
turn (Leptodon Br. eur. etc.).
Subsect. IV. C l i m a c i um VV. et. M. Caulis primar, repens, secundar, pleuio-
carp. e la tu s, primum llagellil'ormis, apice fasciculalim dendroideo-ramosu!,
ramis undique foliosis, folia ovata elongate areolata. Theca exserta.
Sect. VI. Dichelyma H ï r . Caulis fluitans irregul. pinnatus, plcurocarp. et chulo-
carp, ramis falcatis. Fol. secunda vel falcata, elongate lineari-reticiilata,
NB. Sectiones et Subsecliones plures aliae genera et species exotica comprehendunt
plus minus heterogena.
Gen. IV. P i l o t r i c h u i n P. B.
Calyp. mitraef. Perist. et caetera Neckerae.
Sect. I. Fo n tin a lis D il l , et Bryol. eur. Plantae hydrophilae fluitanles elon-
galae cladocarpicae maxime ramosissimae; caulis plus minus distincte tri-
farie foliosus, pinnatus ; folia elongate laxe reticulata enervia ; theca immersa,
perist. cancellato purp. vel nullo praedita.
Sect. II. Cryphaea B rid. PI. p l e i i ro c a rp . v e l c la d o c . , r u p ic o l a e v e l dendro-
p h i l . , d ic h o tom e v e l p in n a tlm r am o s a e , s u b p e n d u la e : c a u lis t e r e s ; fo l. cochl
e a r if . - c o n c a v a v e l c a r in a ta o v a ta v. l a n c e o l , , r o tu n d a t e a r e o l . subnioll.
n u n q . s c a r io s a , b a s i e x c i s a ; th e c a im m e rs a .
Subsect. I. E u c r y p h a e a M. Caulis plus minus longus distiche pinnat.;
thecae perislomatae, plus minus acuminate operculatae In caule eodem
plerumq. creberrimae, unilaterales, ovatae v. oblongae (Cryphaea B r. et
Schp. Bryol. eur.).
Subt r i b. II. HYPNACEAE.
Peristom. int. ciliis interpositis.
Gen. IV. H o o k e r i a Sii.
Calyptra mitraef. Perist. Hypni.
Sect. I. Euhookeria M. Cellulae fol. laxae laeves; fol. aciim. pellucida,
am o e n e re ticu l., marginata, nervis callosis; caulis decumbens complanaliis
(Hookeria Br. eur.).
S e c t. II. Lepidopilum B rid . ( e x o t . ) .
Sect. III. E r io p u s B r id . Cell, densae vel laxae elongatae laeves; fol. midi-
que insería , sparsa remota magna, haud distiche imbricata. nervis toiuii-
hus, haud callosis, interdum nullis; cauli.? repens. ramis asccndeni crcclis,
haud complanatis.
S b . e c t 1 P t e r y g o p h y l l u m B r i d . PlaiUae siihcomplanalae.
Gen. IV. H y p n um D il l .
Calypt. dimidiata. Perist. dupl.; ext. dent. 16 lanceol., e lamina
dnnlici externa linea longitudinali e x a ra ta , interna plus minus
hmelloso-cristata compositi, trabeculati; interni totidem in membrana
plus minus exserta carinato-plicata lanceolati, integ ri vel hi-
antes, ciliis 1 - 4 interpositis, saep. rudiinentariis.
«pct I. D en d ro y lo s so p h y lltim 51. exol.
Sfct. II. G lo s s o p h y l l tim 51. Cauì, planiss. decumbens vel erectus, dichotome
vel pinnatim ramosus, compressus, e basi jam foliis magms obtectus ; fol.
lidul.-oblonga bifar. imbric. planiusc., elliptice areolata laevia.
Subsect. I- S p a t h u l a r i a . Caul, decumb. pinnat.; fol. spathul.- ligulata
(Omalia trichomanoides Bryol. europ.).
Sect. HI. Omalia B r id . Caul, decumb. dichot. vel pinnat. ramosus compress,
vel complanal.; fol. ovato-acum. elongate reticul., saepe secunda.
Subsecl. I. Eu oma li a. Caul, plus minus robust, dichot. divisus; folia ple-
rumq. angustius re tic u l., symmetr. laevia, rarius secunda, 1 - 2 - n e r v i a
(Hypn. rotundifol. B rid., nemorosum, Haldan., denticul. etc.).
Subsecl. II. Ta x i c a u l i s 51. Caul, tenell. plumulose foliosus; fol. vix vel
parum secunda, elongate angustiss. areol., laevia, binervia (Hypn. pulchell.
D ic k s ., Milhlenbeckii Br. eur.).
Subsect. HI. Cu p r e s s i n a . 51. Caul, complan., ramis falcat. uncin. pinnatim
ramosus; fol. distincte falcata, elongate lineari-areol., binervia, laevia (Hyp.
ciipressif. L., reptile., pratense etc.)-
Sect. IV. Mallacodium 51. Caul, dichot. vel pinnat. divisus, decumbens vel
assurgens, mollis; fol. elongate pellucide areolata, nunquam papill. et statu
scarioso ipso mollia.
Subsecl. I. D r e p a n o c l a d u s . Cani, ramique u nc in., distincte falcate uncinata,
elongate lineari-areol, laevia, uninèrvia (H. r i p a r iu m i . , uncinatum,
fluitans, adune., revolvens).
Subsect. II. Ap t y c h u s 51. Caul, vage ramosus, ramis ascendent, confertior.,
fol. concava, crcclo-patentia, plus minus secunda, 1 2-nervia, laevia,
estríala, vel ob margin, revolut. utrinque semel pHcala (Hyp. demissum
WiLs., Leskea polyantha Hedw. (P yla isa e a Sen.), Hyp. p alle scens, confertum
D ic k s . , murale N., pseudoplumosum Bwd., megapolit. et mult.
sp. exot.).
Subsect. III. I s o t h e c i u m Brid. C. decumb. vage ramosus plus minusve
robustus; fol. ovato-lanccol. vel acuminate, distincte plicata, e cell. elongatis
moliib. areolata, erecto-conferta, plus minusve subsocunda, piumose
imbricata (genn. 0 mal oihe c iu m , Camptothec., B ra c h y th e c ium , E u r h y n -
chiitm, Schp. Caroli.).
Subsect. IV. l U c c e b r i n aM. C a u l , dccumbctis illecebrinus vage ramosus tur-
gidiis plus minus julaceo-teres ; fol. e striate (Seeloropodium Sen. etc.).
Subsect. V. C u s p i d a r i a 51. Cani, erectus vel assurgens, ramis turgidis