494 



DICTOYLEDOXES. 



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. 

 Lat/cecia : one of the loculi of the ovary is suppressed. 



2. AMMIE*:, 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 petroselinum : fr endo- 

 sperm ; of. oil-ducts. 



FIG. 531. Pi'rnpmeUo. Transverse 

 section of fruit. 



most frequently present. Orthospermous (except Conium). Cicuta 

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

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

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

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

 graveolens,& 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). G. petroselinum, Parsley (Fig. 530). Fal- 

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

 leaves and yellow corolla ; Pimpinella (Fig. 531) ; Sium ; JEgo- 



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 



A 



FIG. 532. Conium maculatum. Fruit entire 

 and in transverse section. 



wavv crennlate ridges. C. 



<J 



maculatum (Hemlock) has a 

 round, smooth stein with 

 purplish spots. 



