67CLASS XXIIL POLYGAMIA.

ORDER I. MONOECIA.

Flowers hermaphrodite, and male or female „„ ,k

**3. AmiPtpv u___ ,-.., K ,'.f le m the same plant.

5 parted, ,nf er i or . Cor _ Q ^ -

> depressed.

Style 2-parted. Seed

Herm. Cal.

Style 2-parted.Fem. Cal. 2-leaved.

1, compressed.

Seed 1Cor. 0,

Slam. 5.

424.

425.

426.427.

429.

430.431.

432,

433,

434.

435.436.

437,438

CLASS XXrV. CRYPTOGAMIA FILICES

opening inwards

Fructification in spikes.Ewisetum. Cat/cm ovate, with peltate valves

Seeds numerous, naked.OrmooLOssttM. Spike jointed. Fruct. opening horizontally all

round.Osmunda. Spike branched. Fruct. 2-valved. naked.Lycopodium. Spikes oblong, imbricated. Fruct. axillary, reni-

form, 2-valved, elastic.

Fructification on Fronds.Polypodium. Fruit in distinct circular dots on the disk of the

pnnsei. Inool. none.Aspidium. Fruit in roundish dots on the margin of the leaflets.

Invol. targeted.Asplenium. Fruit in small lines scattered on the disk.Scolofendiuum. Fruct. in lines, dispersed between the veins of

the frond. Invol. superficial, the edges folding over

each other.Blechnum. Fruct. in lines parallel to the spine of the leaflet and

placed near to it.Pteius. Fruct. in lines along the circumference of the frond, and

curved by the reflexed margin.Adiantum. Fruct. in distinct dots along the circumference of the

frond.Cyathea. Fruct. in roundish dots, scattered. Invol. hemispherical.Hymenophyej.um. Fruct. solitary, placed on the margin of the

frond. Invol. bivalved.Fructification on or near the roots.Pilulaiua. Fruct. on a round receptacle, 4-celled.lioETEs. Fruct. male within the base of the inner leaves, Fem.

within the base of the inner leaves. Seeds angular,

rough.