DICOTYLEDONES— COROLLIFLOEiE 



371 



crowned by the limb ot the calyx, which is often pappose. 

 Seed solitary, erect, exalbuminous ; radicle inferior. 



Diagnosis. — Herbs or shrubs, with exstipulate leaves. 

 Flowers (called florets) arranged in capitula, which are 

 commonly surrounded by an involucre. Capitula developed 

 successively in a centrifugal manner. Calyx superior, its hmb 

 abortive, or membranous, or pappose. Corolla epigynous, gamo- 

 petalous, 4 — 5-toothed, with a valvate Eestivation. Stamens 



Fig. 1131. Fig. 1132. Fig. 1133. Fig. 1134. 



Fig. 1131. Labiate floret of Chmlanlhera linearis, o. Ovary with adherent 

 calyx, t. Tube o( the ooroll.i. Is. Upper lip ol the corolla. J i. Lower lip. 



e. Tube formed by tile united anthers, s. Stigmas. Fig. 1132. Vertical 



section of the floret of Asler nihrieaiilis. o. Ovary containing one 

 erect ovule, a. Pappose limb of the calyx, p. Corolla, s. Style, c Tube 



formed by the united anthers. Fig. 1133. Floret of the cliicory iClclio- 



riiim Intybns). o. Ovary with adherent calyx, e. Tube formed by the 



united anthers, s. Stigmas. Fig. 1134. Vertical section of the ripe fruit 



of the Groundsel (Se.neao), sm-mounted by a portion of the style, s ; and 

 the pappose limb of the calyx, p. Pericarp, t. Testa, e. Seed. The above 

 figures are from Jussieu. 



epipetalous, equal in number to the divisions of the corolla 

 (generally 5), and alternate with them; anthers syngenesious. 

 Ovary inferior, 1-celled, with 1 erect ovule ; style simple, bifid 

 above, with stigmatio branches. Fruit 1-celled, dry, inde- 

 hiscent. Seed solitary, erect, exalbuminous ; radicle inferior. 



Division of the Order and Illustrative Genera. — This order 

 has been variously divided by authors. By Linnteus, the 

 plants of his class Syngenesia, division Polygamia (which 

 ^ bb2 



