Bryophyta
Marchantia polymorpha. Longitudinal section through a young antheridiophore. The antheridia are seated…
Bryophyta
Marchantia polymorpha. Air-chamber with the filaments of assimilating cells and stoma in vertical section
Bryophyta
Cephalozia bicuspidata. Longitudinal section of the summit of a shoot bearing a nearly mature sporogonium,…
Bryophyta
Funaria hygrometrica. Median longitudinal section of a capsule, with the seta gradually widening into…
Bryophyta
Funaria hygrometrica. Part of a developed protonema. h, Creeping filament with brown walls from which…
Bryophyta
Sphagnum acutifolium. Longitudinal section of apex of a bud bearing archegonia (ar), enclosed by the…
Bryophyta
Sphagnum acutifolium. Longitudinal section of the sporognium borne on the pseudopodium (ps); c, calyptra;…
Bryophyta
Sphagnum acutifolium. Ripe sporogonium raised on the pseudopodium above the enclosing leaves
Bryophyta
Funaria hygrometrica. Longitudinal section of the very young sporogonium enclosed in the archegonial…
Bryophyta
Funaria hygrometrica. Further stages of the development of the sporogonium enclosed in the calyptra…
Bryophyta
Funaria hygrometrica. Further stages of the development of the sporogonium enclosed in the calyptra…
Section of Flax-flower
Section of a flower moderately enlarged, showing a part of the petals and stamens, all five styles,…
Red Maple
One of the pair of keys or winged fruits of Red Maple; the seed-bearing portion cut open to show the…
Silver Maple Key
Fruit of Silver Maple, Acer dasycarpum, of natural size, the seed-bearing portion divided to show seed.
Silver Maple Seed Open
Silver Maple seed open out, to show the thick cotyledons and the little plumule or bud between them.
Germination of Silver Maple
Germination of Silver Maple, natural size; merely the base of the fruit, containing the seed, is shown.
Common Bean Seedling
Caulicle well lengthened and root beginning; thick cotyledons partly spreading; plumule (pair of leaves)…
Beech-nut Germination
Beginning germination of the Beech, showing the plumule growing before the cotyledons have opened or…
Beech-nut Germination Older
Older beech with the plumule-leaves developing, and elevated on a long internodes.
Pea Embryo
Embryo of pea, i.e. a pea with the coats removed; the short and thick caulicle presented to view.
Pea Germination
Pea germination: the plumule has developed four or five internodes, bearing single leaves; but the first…
Acorn
Half of an acorn, cut lengthwise, filled by the very thick cotyledons, the base of which encloses the…
Horse Chestnut
Half of a horse-chestnut, similarly cut; the caulicle is curved down on the side of one of the thick…
Horse Chestnut in Germination
Horse-chestnut in germination; footstalks are formed to the cotyledons, pushing out in their lengthening…
Morning Glory Seed
Seed of Morning Glory divided, moderately magnified; shows a longitudinal section through the centre…
Acanthus
A genus of plants or shrubs, mostly tropical, two species of which arecharacterized by large white flowers…
Morning Glory Embryo
Embryo taken out whole and unfolded; the broad and very thin cotyledons notched at summit; the caulicle…
Morning Glory Seedling
Seedling of Morning Glory more advanced (root cut away); cotyledons well developed into foliage-leaves:…
