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Index / Search / Equisetum ×mackaii

§1 Plant

Equisetum ×mackaii (Newm.) Brichan [hyemale × variegatum]

vernacular horsetail — species · Equisetaceae

USDA
EQMA
GBIF
7740925 syn.
Rank
species
PlateNo public-domain or CC photograph located.

§2Habit & range

Habit and range

Growth habit
Forb/herb
Duration
Perennial
Group
Horsetail
Family
Equisetaceae Michx. ex DC.
Genus
Equisetum
§2a

Native status, by region

  • AK Alaska Native
  • CAN Canada Native
  • GL Greenland Native
  • L48 Lower 48 States Native
§2b

County-level range

· 1 county across 1 state
Legend Native · 1 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation

No cultivation specs.

USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.

§4Counties, by state

Recorded in 1 county across 1 state.

Montana view state ↗ 1 N ▾

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/EQMA ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/7740925 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-25

fetched 2026-05-25T18:27:19Z