168 37. UMBELLIFEIL^. 



branched, furrowed, leafy. Umbels terminal or lateral, fre- 

 quently almost sessile, accompanied by one or two ternate leaves. 

 Fl. small, whitish. Marshes and ditches, especially near the 

 sea. P. VI. VIII. Celery. E. S. I. 



** Pet. with oblique acute point and ivedgeshaped base. Partial 

 inv. present. HELOSCIADIUM Koch. 



2. A. nodifldrum (R. til.) ; st. procumbent at the base and 

 rooting, 1. pinnnate, leaflets ovate or ovate-lanceolate unequally 

 bluntly serrate, umbels opposite to the 1. longer than their pe- 

 duncles or nearly sessile. E. B. 639. St. 1 2 feet long. a ; 

 general inv. soon falling of 1-3 Its., anth. purple. /3. A. repens 

 (R. til.) ; creeping, Its. unequally and actually incise-serrate, 

 umbels snorter than the peduncles, anthers yellow. y. ocreatum ; 

 creeping, 1. roundish ovate small bluntly toothed, umbels verv 

 shortly stalked. E. B. 1431. Banks of ditches and brooks. 

 y. Barnes, Surrey. P. VII. VIII. E. S. I. 



3. A. inunddtum (R. til.) ; st. creeping or floating, 1. pinnate, 

 Its. of lower 1. in capillary segments, of upper 1. wedgeshaped and 

 trifid, umbels generally with 2 rays. E. B. 227. Usually 

 submersed, a few of the upper 1. and the fl. rising above the 

 water. Partial umbels very small. [/3. Moorei (Sy.) ; Its. of lower 1. 

 linear or strap-shaped, of upper broader.] Ponds. P. VI. VII. 



E. S. I. 



7. PETROSELI'NTJM Hill. 



*1. P. sativum (Hoffm.) ; I. tripinnate shining, leaflets of the 

 lower 1. ovate-cuneate trifid and toothed of the upper 1. ternate 

 lanceolate entire. E. B. S. 2793. Carum Petroselinum Benth. 

 Partial inv. filiform. Fl. yellow. L. greenish. Rocks and old 

 walls. B. \ I. VIII. Parsley. E. 



2. P. seo'etum (Koch) ; lower /. pinnate, leaflets nearly sessile 

 ovate lobed and serrate, upper 1. entire or trifid. Sison Sm. 

 E. B. 228. Carum Benth. Umbels very irregular. General im . 

 of 1 2 leaves. FL whitish. St. erect, terete, nearly leanV>s 

 above, 1 1 J foot high, wiry. Damp calcareous fields and near 

 the sea. B. VIII. IX. E. 



8. SI'SON Linn. Stonewort. 



1. S. Amdmum (L.).--E. B. 954. St. erect, panicled, 2 3 

 feet high. Lower 1. pinnate ; Its. oblong lobed cut and serrate. 

 Upper 1. divided into narrow segments. Partial umbels and fl. 



