2o6 



UMBELLIFER,* 



li f 



2. P. segetum (Corn Parsley). — Well distinguished by its 

 slender, branched stem, which is remarkably tough and wiry ; its 

 small pinnate leaves, of which the lower ones wither early, while the 

 cauline ones are few, small and inconspiQuous ; and the irregular, 

 few-rayed umbels and small ^\\\iv^ flowers.— Cornfields and waste 

 places ; not uncommon. — Fl. Augu.st, September. Biennial. 



12. C I C IJ T A 



(Water-Hemlock). — 

 Tall, glabrous plants; 

 leaves 2 — 3-pinnate ; 

 umbels compound, 

 many-rayed ; bracts 

 I — 2, very narrow, 

 or none ; bracteoles 

 several, small, un- 

 equal ; sepals ovate, 

 acute ; petals white, 

 vi'ith an inflexed tip ; 

 fnilt constricted, 

 with two globose 

 carpels. (Name, a 

 Classical Latin name 

 for Hemlock.) 



I . C - V i r b s a 

 (Water - Hemlock, 

 Cowbane). — Root 

 fibrous ; stem stout, 

 hollow ; lower leaves 

 long-stalked, 2 — 3- 

 pinnate; n p p e r 

 leaves 2 - ternate ; 

 leaflets lanceolate, 

 2 - serrate ; umbels 

 large, long-stalked, 



flat-topped ; flowers minute, white. — Ponds and ditches ; rare. 



Very poisonous, as are also the species of CEiiaiitlie, to which also 



the name Water-Hemlock is often applied. — Fl. |uly, August. 



Perennial. 



*i3. Ammi, represented by the one jpecies, A. ma/'i/s, a glau- 

 cous, scentless, and tasteless plant, 6-— 24 in. high, repeatedly 

 forked with diverging branehes ; pinnate fefv/'/ftWW with obovate, 

 finely serrate leaflets, decompound ripp'er leaves with linear seg- 

 ments ; and stalked 10 — 30-rayed umbels of white flowers, with 



PETkOSELJNL'M ^KCETUM {Co 



