MUSCI. 
Trirüs IV. ZYGODOi^TEÆ. 
Cknus I. ZYGODON Hook. et Tayl. 
Sectio Eüzygodon C. Miill. 
A. FOLIA INTEGliA. 
, a. Perisiomiiim simplex. 
1 . Z. AFFINIS Sch. in lierb. — Dioicus; habitu Zygodonti Liebmamii alïiiiis, sed minus, cæspitibus dense 
compactis, ibiiis angustioribus minutissime papillosis. Capsula minuta longicollis; calyptra infra medium 
producta. Planta mascula brevicaulis dense cæspitosa, perigonio terminali, foliis externis costatis, ovato- 
lanceolatis apice papillosis, intimis ovatis lævibus basi angustis subecostatis; antheridiis paucis crassis, 
parapliysibus longioribus cylindricis. 
Ad arborum truncos, Orizaba (Liebmann in herb. Mus. bur.). 
'2. Z. CYLiNimiccs Sdi., C. Midi. Syn. 1, p. 672. 
Orizaha ( Liebmann ). 
3. Z. Liebmanni Sch., C. Midi. Syn. I, p. 678. 
Orizaha, ad arborum truncos (Liebmann). 
jS. Peristoniimn duplex. 
4 . Z. SPATH11LÆFOLIUS Besch. — Dioicus; dense cæspitosus humilis, radiculosus erectus fastigiatim ramo.su.-j 
rufo-viridis; folia caulina flexuosa spatliuiato-oblonga valde papillosa, pajiillis margine prominulis, cellulis 
superne rotundatis, ad basin hexagonis areolata, costa excurrente; folia perichætialia similia. Capsula iii 
pedicello breviusculo, erecta vel paulo inclinata piriformis longicollis, sicca 8-costata badia. Peristomium 
duplex, dentes externi 8-bigeminati late plani, interni ejusdem forrnæ, brexdores. Planta mascula similis, 
perigonio axillari 7-8-foiiato, foliis costatis, 5-6 antheridiis ovatis, parapliysibus hliformibus jiaucis acuti.s. 
Zygodonti Bi^ebissoni miniis , sed foliis spathulatis et peristomio interno primo visu longe differt. 
Prope Mejico, in sylva dei Desierlo Viejo, sept. i 865 (Bouug. iP i 334 ). 
0. Z. ANGUSTATUS Scli., G. Müll. Sfn. I, p. 676. 
In monte Orizabensi (Liebmann). 
6. Z. Eiirenbergii C. Miill. Syn. I, p. 676. 
In Mexico (Lkrenbehg in berb. Montagne). 
B. FOLIA DENTATA. 
\ 
7. Z. circinatus Sch. in herb. — Dioicus; laxe cæspitosus inferne tomentosus rufus, superne giauco- 
viridis, ramis brevibus; lolia caulina madida squarrosa recurva, sicca torquata longe lanceolato-ligidata, basi 
angusta vel angustissima, cellulis quadratis byalinis, medio flexuosa, aliis recurvatis, apice serrata, minu- 
tissime punctata, costa ante apicem evanida; folia perichætialia subconformia, longiora latioraque. Capsula 
in pedicello longo recto rubello, ovato-cylindrica, gymnostoma, brevicollis. Operculum breve conicum. 
Cordova (F. Muller). 
8. Z. CAMPYLOPHYLLUS C. Müll. SlJH. I, p. 68o. 
In Mexico (Ehrenberg). 
1 . M. Ghiesbreghtii Besch 
Genus II. MAGROMITRIUM Brid. 
— Monoioum; caulis repens lutescens, ramis hliforniibiis rigidis irregulariter 
