DICOTYLEDONES— COROLLIFLOR.E 



371 



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

 Seed solitary, erect, exalbunainous ; radicle inferior. 



Diagnosis. — Herbs or shrubs, with exstipiilate leaves. 

 Flowers (called florets) arranged in capitula, which are 

 conimonh' 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 aestivation. Stamens 



Fig. 1131. 



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



Fig. 1131. Labiate floret of ChiP.lanthera linearis, o. Orary with adherent 

 calyx, t. Tvibe of the corolla. Is. Upper lip of the corolla. I i. Lower lip. 



e. Tube formed by tiie united anthers, a-. Stigmas. Fi'j. 1132. Vertical 



section of the floret of Aster ruhricaidis. o. C)vary containing one 

 erect ovule, n. Pappose limb of the calyx, p. Corolla, s. Style, e. Tube 



formed by the united anthers. Fi(/. 1133. Floret of the chicory (Ciclto- 



rium Infyhiis). 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 (Spnecio), surmounted by a portion of the style, s ; and 

 the pappose limb of the calyx. 2>- Pericarp, t. Testa, e. Seed. The above 

 figures are from .Tnssieii. 



epipetalous, equal in number to the divisions of the corolla 

 (generall}' 5), and alternate with them; anthers syngenesious. 

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

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

 hiscent. Seed solitar3% erect, exalbuminous ; radicle inferior. 



Division of the Order a7id Illustrative Genera. — This order 

 has been variously divided by authors. By Linnaeus, the 

 plants of his class Syngenesia, division Polygamia (which 



B B 2 



