Download PDF

introductio:n to botany. 129
COROLLA.
Blossom, Bloom, Auleum, Perigynandra interior. The
wtenial integument of the sexual orgajis, when there are
two ; or a fine and coloured single integument of the same
texture as the stamens, and either inserted along with
them on the receptacle, or hearing them itself.
1. Insertion.
Hypogynous, Corolla hypogyna. Growing out from
telow the ovary, whether the ovary be sessile. Cheiranthus,
Cruciferse; or seated on a gynophore, Dianthus,
Silene, Cucubalus, and other caryophylleee, Cleome. PI. 10,
fig. 4,6.
Perigynous, perigyna. Growing out from the internal
surface of the calyx. Campanulaceae, Salicaria, Rosaceae.
Epigynous, epigyna. Growing from tlie top of the ovary.
Compositae, Caprifoliaceae, Rubiacess, Umbelliferae.
2. Structure,
Polypetalous, Corolla polypetala. Composed of several
separate pieces, or petals. Umbelliferae, Cruciferae, Caryophylleae,
Saxifragese, Rosacea^, Pomaceae, Dryadeae, Leguminosae.
Gamopetalous, monopetalous, Corolla gamopetala, monopetala.
Composed of only one piece, surrounding the
sexual organs on every side, the several divisions or petals
being soldered together. Labiatae, Borragineae, Apocyneae,
Compositas. PI. 9, fig. 10, 11, 1:^, 13, 14, 15,20,21.
II Regular, regularis. Borrago, Convolvulus, Aquilegia,
Cruciferse, Carophylleae, Rosaceae, Dryadeae, Pomaceae.
Irregular, irregularis. Labiatae, most leguminosae.
3. Compositioji
Two-petaled, Corolla dipetala. Formed of two pieces.
Circaea.
Three-petaled, tripetala. Formed ofthree pieces. Alisma,
Sagittaria.
Four-petaled, tetrapetala. Of four pieces. Cruciferae,
Chelidonium.
Five-petaled, pentapetala. Umbelliferae, Adonis, Ranunculus,
Caryophyllese, Rosa.
Six-petaled, hexapetala. Berberis, Anona.
Eight-petaled, actopetala. Nigella Hispanica.
VOL. I. K
.