Eucephalozia 31 



concava vel laxe complicata, raro subplana, bifida rarissime 

 3 — 4-fida, sinu raro profundo, in aliis subacute, aliis lu- 

 nato ; segmentis apice variis, raro autem vel rotundatis vel 

 cuspidatis; margine integerrimo. Foliola (paucis sp. nor- 

 maliter praesentia) parva integra bifidave. Cellulce foliontm 

 magnitudine sat constantes, diametro in diversis speciebus 

 inter ^'^° et ^/^omm yariantes, raro fere magnee (''''^ '""') rarissime 

 parvse (i/45-i/4Smm^ sequilateri-hexagonse, vel ssepius quadrato- 

 hexagonse quadratseve, in plerisque sp. subpellucidse, 

 pariete in perpaucis ad angulos incrassato, cuticula sub- 

 Isevissinia ; cellulce bradearmn et perianthiorum plerumque 

 submajores rectangulari-oblongse. F lores dioici, vel mon- 

 oici, rarissime paroici : o in aliis speciebus constanter 

 cladogeni, in aliis nunc clado-nunc acrogeni, vel omnes fere 

 acrogeni — imo interdum in ipso caule terminales. Bractece 

 trijugse, raro pauciores, intimse sat magnse bi-rarius 3 — 4- 

 fidse, integerrimse vel perssepe dentatse, spinuloses, incisseve, 

 liberse vel cum bracteola subconformi, sequilonga vel bre- 

 viore, basi connatse. Perianthia plus minus alte emersa 

 fusiformia — interdum fere linearia — trigono - prismatica, 

 carinis aliarum specierum omni setate acutis, aliarum 

 (fructu maturato) subobliteratis non nisi ad apicem discer- 

 nendis, ore constricto denticulata, setulosa, ciliata, lacinia- 

 tave; pariete, ipsa basi ubi in caulis ramive apicem cavum 

 transit excepta, leptodermi, vel in paucis speciebus dimidio 

 saltern inferiore 2 — 3 cell, crasso. AndrcBcia spicse-vel 

 amentiformia, varie posita; rarissime tamen hypogyna, 

 bracteis cf florem foemineum proxime sequentibus. 



Hah. et Distribtttio. Species CephalozicB typicse nullis 

 terris, nisi arcticis et alpinis frigidissimis, exules, in Eu- 

 ropa et America-boreali prsecipue abundant, loca umbrosa 

 snblmmida, paucse palustria, matrice varia, diligentes. In 



