436

CCIiXXI. LYrOPOlUACElIi.

A. Organa fructificationis biformia; alia (Antheridia, Spring, Sporangia , Link) 1-locularia,

vcrlice bivalvia, brevissime peilieellala, erecta, oblonga, rarius cordato-subglobosa, sporulisinnumeris (farinaceis) globosis (semper?) echinulalis repleta; alia ( Oopkoridia , Spring, An-theridiu, Link) 3-4-lobo-subglobosa , 3-4-cocca, globulos 3-4 continentia, nunc illis aequaliaet iulerrnixta, nunc majora et ad basin spicae solitaria. (Folia dimorpha, 4-sticba, rarissimehomoinor\jha polysticba; spicae 4-gonae, bracteis 4-sticlie imbricatis. — Hry. temp. ei praecipue trop. in-tius orbis.) .•.

B. — fructificationis uniformia (oophoridia nulla).

1. Sporangia l-locularia, vertice (raro prope basin) rima transversa 2-vaIvia, sub-sessil., didymo-reui-

formia v. transverse ovalia; sporis 00 farinaceis globosis, quaternalim in corpuscula 3-gonacongestis, facie contigua quadriquelris. (Folia uniformia, aequilatera, raro diniorplia, 8 - 16 - raro 4fariarn disposita; sporangia vel sparse axillaria v. in spicas cylindricas undique imbricato-squamatasdisposita. — Tutus orbis.) .

2. — 2-locularia, didymo-oblonga, subcompressa, rima verticali loculicide 2-valvia, in folior.

axillis solitaria, sessilia. Sporae subreniform., laeves, pellucidae. (Hba. parasit.?, caul. pen-dulis subsimpl., conferte foliatis, fol. spars. sessil. angnst. integris. — Austral., ?Valifom.) .

3. — 3 -loc., 3-lobo-subglobosa, e vertice loculicide 3-valvia, secus ramulos sparsa, in axilla fo-

lior. rudimentariorum setiformium solitaria, sessil. Sporae Tmesipteridis. (Hba parasit.; caul.dichotome ramosus, erect. v. pendulus, compress. v. snbtriqueter, folia praeter rudimenta geminata den-ticuliformia nulla. — Iteg. trup. et subtrop. orbis fere lotius.) .

CCLXXn. ttHIZOCABPEAE.

I. Herbae submersae, acaules, trunco brevissimo, disciformi, inferne radiculas cavas, e vertice

depresso folia dense congesta subulata, stricta, fragilia, canalibus 4 aereis parallelis trans-verse septatis percursa, emittente. t .

Sporocarpia foliorum basi dilatatae concavae sub squamula cordiformi et processu mem-• r branaceo semilunari immersa et dorso adnata, subrotunda, plano-convexa, tenue membra-

nacea, intus filis transversis e pariete dorsali radiantibus multilocellata; sporangia filis affixa,alia ovata, glabra, quaternatim connata, demum discedentia, granula elliptica hinc linealongit. notata continentia; alia majora, tetraedro-globosa, crusta granulosa irregularitersecedente obducta, linea annulari inaequaliter bipartita, parte majore superiore e centroradiatim 3-costata, germinatione undique iu truncum excrescentia. — (Europa, Asia, Amer, bor.)

II. — in paludosis repentes, rhizomate filiformi radicante, fronde sparsa

Stipitata vernatione circinata; sporocarpia capsulaeformia, uniform., subglobosa, frondisstipiti basi v. medio inserta, solitar. v. aggregata, 2-4-locularia, loculis sporangia dimorpha,imperfecta (mascula?) et perfecta (sporis ellipl. v- subglobosis repleta) continentibus. . .

1. Sporocarpia ad basin stipitum frondis lamina destitutis subulatis sessilia, 4 -loc.; placentae in loculis

perpendiculares, inferne sporangiis perfectis, superne imperfectis obsitae. — (Europa.)

2. — in basi v. supra basin stipitis frondis apice cruciatim 4- foliatae pedicellata v. subsessilia

2-loc., loculis transverse plurilocellatis; placentae in locellis horizontales; sporangia perfecta

singnla imperfectis 2 V. 4 basi Stipata. (Frondis foliola natantia, subverticillata, haud articulata.— Totus fere orbis.) .

III. Herbae natantes, radiciculosae, pinnatim v. radiatim ramosae, fol. alter-

nis simpl. cellulosis astomis, saepe papillosis. Sporocarpia prope foliorum basin sita,dimorpha, alia <J? (antheridia) 1-2-locularia, corpuscula angulata v. globosa includentia;alia 5 (sporangia) capsulaeformia, sphaeroidea, pedicellata, aggregata, sporis referta.. .

1. Sporocarpia cf et $ consimilia juxtaposite congregata, pedicellata, discreta, subglobosa, costata, pi-

losa, membrana duplici (indusio?) formata, basi intus receptaculo sporifero placentaeformiclavato libero praedita; globulis cellulosis pedicellatis materia glutinosa refertis, 9 spo-

rangiis ovoideis (majorib.) pedicellatis foeta, membrana cellulosa sporara solitariam solidamincludente demum irregulariter rupta. — (Hemisphaer. bor., Amer, austr.)

2, — c? et 2 dissimilia, tenue membranacea, reticulata; J 1 obovata, discreta v. lateri $ adplicita,

sessilia, membrana demum circumscissa corpuscula 2-1 oblonga materia grumosa farcta in-cludentia; $ ovoidea, sporangia 00 globosa pedicellis longis e basi orta sporis globosis pilo-sis repleta continentia. (Hbulae pusillae, fere Jungermanniae facie. — Amer. bor. et austr. Austral .).

Selaginella. Spring.

Lycopodium (L.) Spring.

Tinesipteris. Bkrnh.

Psilotuin. Sw.

Subordo I.ISOETEAE.

Isoetes. L.

Subordo II.

marsileaceae.

Pilularia. Vaili..

Mars i lea. L.

Subordo III.

SALVINIACEAE.

Salvinia. Micu.

Azolla. Lam.