Introductory
SPECIES: Sonchus arvensis | Perennial Sowthistle 



ABBREVIATION : 
SONARV

SYNONYMS : 
   Sonchus uliginosus Bieb. [11,32]


SCS PLANT CODE : 
   SOAR2
   SOARA2
   SOARU


COMMON NAMES : 
   perennial sowthistle
   field sowthistle


TAXONOMY : 
The currently accepted scientific name for perennial sowthistle is
Sonchus arvensis L. (Asteraceae) [11,13,15,19].  The following two
subspecies are recognized by some authors and are used in this writeup
[13,19]:

	S. a. ssp. arvensis
	S. a. ssp. uliginosus (Bieb.) Nyman

Other authors [11,20] recognize two varieties, Sonchus arvensis var.
arvensis and S. a. var. glabrescens (Guenther) Grab & Wimmer, which is
synonomous with S. a. ssp. uliginosus.


LIFE FORM : 
Forb

FEDERAL LEGAL STATUS : 
No special status

OTHER STATUS : 
NO-ENTRY


COMPILED BY AND DATE : 
Jennifer H. Carey, January 1995


LAST REVISED BY AND DATE : 
NO-ENTRY


AUTHORSHIP AND CITATION : 
Carey, Jennifer H. 1995. Sonchus arvensis. In: Remainder of Citation

Related categories for Species: Sonchus arvensis | Perennial Sowthistle