• ABBREVIATION
• SYNONYMS
• NRCS PLANT CODE
• COMMON NAMES
• TAXONOMY
• LIFE FORM
• FEDERAL LEGAL STATUS
• OTHER STATUS
• AUTHORSHIP AND CITATION

ABBREVIATION:

ACHMIL

SYNONYMS:

Achillea lanulosa Nutt. [73]

NRCS PLANT CODE:

ACMI2
ACMIA
ACMIA2
ACMIB
ACMIC
ACMIG
ACMIL2
ACMIM
ACMIO

COMMON NAMES:

western yarrow
common yarrow
wooly yarrow

TAXONOMY:

The scientific name of western yarrow is Achillea millefolium L. (Asteraceae) [26,36,44,73]. There are both native and introduced phases of western yarrow in North America. Introduced and native phases differ primarily in chromosome number and are difficult to distinguish morphologically [26,73]. Native and introduced phases hybridize. The intricate pattern of morphologic, geographic, and ecologic variation within the species has frustrated all efforts to organize an intraspecific taxonomy on a circumboreal or even a strictly North American basis [26]. Most authorities do not recognize infrataxa [26,73,74]; however, Kartesz [44] recognizes the following varieties:

A. millefolium var. alpicola (Rydb.) Garrolt - common yarrow
A. millefolium var. arenicola (Heller) Nobs - common yarrow
A. millefolium var. borealis (Bong.) Farw. - boreal yarrow
A. millefolium var. californica (Pollard) Jepson - California yarrow
A. millefolium var. gigantea (Pollard) Nobs - giant yarrow
A. millefolium var. litoralis (Ehrend.) Nobs - coast yarrow
A. millefolium var. megacephala (Raup) Bolvin - largehead yarrow
A. millefolium var. occidentalis (DC.) Hyl. - western yarrow

LIFE FORM:

Forb

FEDERAL LEGAL STATUS:

No special status

OTHER STATUS:

Boreal yarrow is state-listed as a species of special concern in Maine [48].

AUTHORSHIP AND CITATION:

Aleksoff, Keith C. (1999, June). Achillea millefolium. In: Remainder of Citation

Related categories for SPECIES: Achillea millefolium | Western Yarrow