178 A GUIDE TO THE WILD FLOWERS 



herbs, such as coriander and caraway. They have alternate, 

 twice or thrice compound leaves (except the Pennywort. No. 

 539) which are often finely dissected, and the leaf -stalks 

 often dilated at the base, as in celery. Flowers small, often 

 minute, but always arranged in umbels (see Figs. 527-555), 

 and these may be themselves arranged in larger umbels, 

 or in other ways. The ultimate umbel or the aggregate col- 

 lection of them, or both, are usually surrounded at the base 

 by a series of small or large bracts (see Fig. 547), but these 

 are lacking in the Parsnip, No. 554, and in the Meadow- 

 parsnip No. 555. Petals 5, fruit dry, usually ribbed. The 

 species are difficult to identify, and some, without dissection 

 of their fruits to ascertain technical characters, cannot be. 

 Only the best known and most easily identified are included 

 here: 



Flowers yellow no. 551 



Flowers white, or greenish white 

 Leaves undivided, round, the leaf-stalk attached to the middle 



of the leaf-blade Pennywort no. 539 



Leaves compound, often finely dissected, 



Plants at least 4 ft. high, often 6 or 8 ft., usually growing in 

 moist places 



Plants white hairy ; leaves often 2 ft. wide, the ultimate seg- 

 ments 3-6 in. wide Cow-parsnip no. 540 



Plants not hairy; leaves smaller, the ultimate segments not 

 over 2 in. wide, 

 Veins of the leaflets ending in the notch between the 



marginal teeth Water Hemlock no. 541 



Veins of the leaflet scarcely reaching the margin, if so, 



not ending in the notch Great Angelica no. 542 



Plants usually less than 3 ft. high, often less than 2 ft. 



Ultimate leaf-segments thread-like 



Mock Bishop-weed no. 543 



Ultimate leaf-segments wider 



Ultimate leaflets arranged finger-fashion 



Black Snakeroot no. 544 



Ultimate leaflets arranged feather- fashion 

 Woods plants. 



Hairy ; fruits about 5^ in. long 



Sweet Cicely no. 545 



Without hairs ; fruits about % in. long 



Honewort no. 546 



Plants of waste places or fields 



Bracts under the flower cluster dissected 



