UMBELLIFEROUS TRIBE 



119 



8. Petroselinum {Parsley) 



1. P. segetum (Corn Parsley). Well 

 distinguished by its slender, branched 

 stem, which is remarkably tough and 

 wiry, by its small pinnated leaves and 

 umbels of small whitish flowers, and by 

 the rays of the umbel being few and 

 very unequal in length. The root- 

 leaves wither early, and the few which 

 grow on the stem are small and incon- 

 spicuous. Corn fields and waste places ; 

 not uncommon. Fl. August, Septem- 

 ber. Biennial. 



2. P. sativum. Is the common 

 Parsley of gardens, which, though often 

 found seemingly wild, is not really 

 indigenous. 



Petroselinum Segetum 

 (Corn Parsley) 



9. Helosciadium (Marsh-wort) 



Helosciadium Nodiflorum 

 (Procumbent Marsh-wort) 



I. H. nodiflorum (Procumbent 

 Marsh-wort). Stem prostrate and 

 rooting ; leaves pinnate ; leaflets egg- 

 shaped, serrated ; umbels on very 

 short stalks, opposite the leaves. A 

 plant with somewhat of the habit of 

 Water-cresses, in company with which 

 it often grows, and for which it is 

 sometimes mistaken. It may be dis- 

 tinguished when out of flower by its 

 serrated and somewhat pointed leaves 

 and by its hollow stems. The flowers 

 are small and white. In ditches 

 and rivulets ; abundant. Fl. July, 

 August. Perennial. H. re pens is a 

 smaller plant and has narrowed leaves, 

 but is scarcely a distinct species. 



2. H. inundatum (Least Marsh-wort) has the lower leaves finely 

 divided into numerous hair-like segments. The umbels usually 

 only 2 rays of small white flowers, and, with the upper leaves, 

 are the only parts of the plant which rise out of the water. 

 Ponds ; a common plant often overlooked. Fl. June, July. Per- 

 ennial. 



