INTRODUCTION TO BOTANY. 129 
COROLLA. 
Blossom, Bloom, Auleum, Perigynandra interior. The 
internal integument of the sexual organs, 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 bearing them itself. 
1. Insertion. 
Hypogynous, Corolla hypogyna. Growing out from 
below the ovary, whether the ovary be sessile. Cheiran- 
thus, Crucifere; or seated on a gynophore, Dianthus, 
Silene, Cucubalus, and other caryophyllee, Cleome. Pl. 10, 
fig. 4, 6. . 
Perigynous, perigyna. Growing out from the inteznal 
surface of the calyx. Campanulacez, Salicaria, Rosacez. 
Epigynous, epigyna. Growing from the top of the ovary. 
Composite, Caprifoliaceee, Rubiacex, Umbeilifere. 
2. Structure. 
Polypetalous, Corolla polypetala. Composed of several 
separate pieces, or petals. Umbelliferae, Cruciferae, Cary- 
ophyllez, Saxifrageee, Rosaces, Pomaceze, Dryadee, Le- 
guminosze. ° 
_ Gamopetalous, monopetalous, Corolla gamopetala, mono- 
petala. Composed of only one piece, surrounding the 
sexual organs on every side, the several divisions or petals 
being soldered together. Labiatze, Borraginez, Apocynez, 
Composite. PI. 9, fig. 10, 11,12; 13, 14, 15, 20, 21. 
q Regular, regularis. Borrago, Convolvulus, Aquilegia, 
Cruciferee, Carophylleae, Rosaceze, Dryadese, Pomaceze. 
Irregular, irregularis. Labiatee, most leguminosz. 
3. Composition. 
Two-petaled, Corolla dipetala. Formed of two pieces. 
Circeea. 
Three-petaled, tr7petala. Formed of three pieces. Alisma, 
Sagittaria. 
Four-petaled, tetrapetala. Of four pieces. Cruciferae, 
. Chelidonium. f \ 
Five-petaled, pentapetala.. Umbelliferee, Adonis, Ra- 
nunculus, Caryophyllez, Rosa. 
Six-petaled, hexapetala. Berberis, Anona. 
Kight-petaled, ectopetala. Nigella Hispanica. 
VOL. I. K 
