4.M 



DICTOYLEDONES. 



sessile, the inflorescence is thus a capitulum ; each flower is 

 often subtended by a bract, which is thorny like the involucre, 

 resembling the burrs of the Teasel. The sepals are large. 

 Lacjcecia : one of the loculi of the ovary is suppressed. 



2. AMMIE^E, CARAWAY GROUP (Figs. 530-532). The fruit has 

 only the 10 primary ridges ; it is usually short, almost spherical or 

 broadly ovate and distinctly compressed laterally. Oil-canals are 



FIG. 530. Fruit of Carum petroselinuni -. fr endo- 

 sperm ; oi oil-ducts. 



FIG. 631. Pimpineila. Transverse 

 section of fruit. 



most frequently present. Orthospermous (except Conium). Cicuta 

 (Cow-bane). Pointed calyx-teeth. Glabrous herbs with pinnate or 

 bi-pinnate leaves. C, virosa has a thick, vertical rhizome, divided by transverse 

 septa into many compartments ; the leaflets are narrow, lanceolate, and dentate ; 

 the large involucre is wanting. Apium (Celery). No calyx-teeth. A. 

 graveolens, a maritime plant, has neither large nor small involucre ; 

 the umbels are short-stalked or sessile. Carum (Caraway). Calyx- 

 teeth small ; the large involucre is wanting or is only few-leaved. 

 C. carvi (Caraway). C. petroselinum, Parsley (Fig. 530). Fal- 

 caria-, Ammi; Helosciadium ; Bupleurum (Hare's-ear) with, simple 

 leaves and yellow corolla ; Pimpineila (Fig. 531) ; Siwm ; ^Ego- 

 podium (A . podagraria, Gout- 

 weed) has bi- or tri-ternate 

 leaves, with ovate, dentate 

 leaflets ; the large involucre 

 is wanting. Conium is cam- 

 pylospermous (Fig. 532) ; the 

 short, broadly ovate fruit has 

 distinctly projecting, often 

 wavy crenulate ridges. C. 

 maculatiim (Hemlock) has a 

 round, smooth stem with 



FIG. 532. Conium maculotum. Fruit entire . 



and in transverse section. purplish Spots. 



