Data sources

Each value Trefle shows for Verbena macdougalii, with what every source says about it. When sources disagree, the strongest source is shown (how sources are ranked). Values imported before sources were recorded one by one are marked Source not recorded.

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Sourced2 Source not recorded9 Not on the record2 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	A.Heller	No source recorded	Source not recorded
Bibliography	Bull. Torrey Bot. Club 26: 588 (1899)	No source recorded	Source not recorded
Phylum	Tracheophyta	No source recorded	Source not recorded
Rank	species	No source recorded	Source not recorded
Status	accepted	No source recorded	Source not recorded
Year	1899	No source recorded	Source not recorded
Descriptive
Common name	Macdougal verbena	No source recorded	Source not recorded
Observations	WC. & SC. U.S.A. to Mexico (Baja California)	No source recorded	Source not recorded
Morphology
Average height	empty	40 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 251	Not on the record
Growth habit	Forb/herb	Forb/herb · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 28, 193	Sourced
Ecology
Nitrogen fixation	empty	None · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 193	Not on the record

Verbena macdougalii A.Heller, 1899 12% complete

Macdougal verbena

.fa-secondary{opacity:.4} Data sources

Data sources