Data sources

Each value Trefle shows for Ageratum houstonianum, 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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Sourced6 Differs from sources1 Source not recorded10 Not on the record2 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	Mill.	No source recorded	Source not recorded
Bibliography	Gard. Dict. ed. 8: n.° 2 (1768)	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	1768	No source recorded	Source not recorded
Descriptive
Common name	Mexican ageratum	No source recorded	Source not recorded
Family common name	Aster family	No source recorded	Source not recorded
Observations	Mexico to C. America	No source recorded	Source not recorded
Morphology
Average height	49 cm	48.75 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 500, 882, 918	Differs from sources
Biological type	therophyte	therophyte · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 500, 918	Sourced
Flower color	empty	blue, purple · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 882	Not on the record
Fruit color	black	black · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 882	Sourced
Fruit shape	achene	achene · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 882	Sourced
Growth habit	Forb/herb	Forb/herb · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Maximum height	empty	100 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 500, 882, 918	Not on the record
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	annual	annual · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 25, 918	Sourced
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 71, 445	Sourced

Ageratum houstonianum Mill., 1768 25% complete

Mexican ageratum

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Data sources