This illustration shows the flower and sporophylls of Angiosperms: 1, flower of Sedum with leaf-like perianth, p; microsporophylls, s; megasporophylls, c. 2, microsporophyll of the buttercup, showing four-lobed anther and filament. 3, diagram of a cross-section of anther, showing the breaking down of the tissue about the four sporangia and the beginning of the opening of the anther. 4, one of the sporangia from a young anther, as seen in cross-section-m, spore mother cells. The large cells surrounding the mother cells are nourishing cells, known as the tapetum, and disorganize as the spores mature. At the right a mother cell forming four microspores, the upper one being characterisitic of dicotyledons and the lowr of monocotyledons.

Angiosperm

This illustration shows the flower and sporophylls of Angiosperms: 1, flower of Sedum with leaf-like…

"A genus of plants of the natural order Thymeleaceae, having a 4-cleft, funnel-shaped perianth, the throat of which is destitute of scales, eight stamens, and one-seeded succulent fruit." — Chambers' Encyclopedia, 1875

Daphne Mezereon

"A genus of plants of the natural order Thymeleaceae, having a 4-cleft, funnel-shaped perianth, the…

"A genus of plants of the natural order Liliaceae, having a perianth with bell-shaped limb, and sub-cylindrical tube, and globose seeds with soft testa. Several species are cultivated in our flower-gardens, especially the fragrant Yellow Day-lily, a native of Hungary, Siberia, and the north of China." — Chambers' Encyclopedia, 1875

Day-lily

"A genus of plants of the natural order Liliaceae, having a perianth with bell-shaped limb, and sub-cylindrical…

Pictured is a double perianth as seen in the flower of abutilon insigne. A double perianth has an outer circle of green sepals and an inner circle of colored petals.

Double Perianth

Pictured is a double perianth as seen in the flower of abutilon insigne. A double perianth has an outer…

"Diagram to show the essential parts of a "flowering" plant. t.r., tap-root; cot. seed-leaf (cotyledon); i, internode; a.l, leaf-axil; n, node; a.b, axillary buud; r, receptacle of floral organs; ca, calyx; per, perianth; co, corolla; st, stamens (androecium); pi, pistil (gynoecium)." -Gager, 1916

Flower Parts

"Diagram to show the essential parts of a "flowering" plant. t.r., tap-root; cot. seed-leaf (cotyledon);…

This illustration shows the germination of the gametospore: A, section of a mature archegonium with canal cells dissolved, thus forming a passageway to the large female gamete, g. B, sectional view of base of archegonium, showing the germinating gametospore in two-cell stage. The perianth, p, is seen growing up about the archegonium. C, later stage in growth of the gametospore. The lower cell shown in B is forming stalk cells, while the outer cell has produced densely granular cells that will later by further division form spore mother cells and elaters.

Gametospore

This illustration shows the germination of the gametospore: A, section of a mature archegonium with…

"Iris. I, flower; II, seed, longitudinal section; III, flower with outer segments of perianth removed; stig., stigma, ov., ovary." -Bergen, 1896

Iris

"Iris. I, flower; II, seed, longitudinal section; III, flower with outer segments of perianth removed;…

"Miersia chilensis; 2. its flower; 3. the interior coloured petaloid bracts; 4. a perpendicular section of the perianth." -Lindley, 1853

Miersia chilensis

"Miersia chilensis; 2. its flower; 3. the interior coloured petaloid bracts; 4. a perpendicular section…

Pictured is a petaloid perianth as seen in lilium concolor pulchellum. All parts are petaloid.

Petaloid Perianth

Pictured is a petaloid perianth as seen in lilium concolor pulchellum. All parts are petaloid.

Pictured is a single perianth as seen in anemone sylvestris.

Single Perianth

Pictured is a single perianth as seen in anemone sylvestris.