Data sources

Each value Trefle shows for Heracleum maximum, 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.

Something wrong? Suggest a correction.

Sourced3 Differs from sources1 Source not recorded8 Not on the record9 Sources: TRY Plant Trait Database

Field	Shown	What the sources say
Core
Author	W.Bartram	No source recorded	Source not recorded
Bibliography	Travels Carolina: 344 (1791)	No source recorded	Source not recorded
Rank	species	No source recorded	Source not recorded
Status	accepted	No source recorded	Source not recorded
Year	1791	No source recorded	Source not recorded
Descriptive
Common name	American cow-parsnip	No source recorded	Source not recorded
Family common name	Carrot family	No source recorded	Source not recorded
Observations	Russian Far East to Japan, Subarctic America to U.S.A.	No source recorded	Source not recorded
Morphology
Average height	244 cm	243.84 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 28, 92, 608	Differs from sources
Flower color	empty	white · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Foliage color	empty	green · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Foliage texture	empty	coarse · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Fruit color	empty	brown · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Growth rate	empty	Moderate · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Phenology
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 28, 92	Sourced
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 89, 444	Sourced
Cultivation
Minimum root depth	34 cm	34 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 92, 608	Sourced
Other
Human usage type	—	fodder · TRY Plant Trait Database · Reported · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Propagation method	—	seed · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Salt tolerance	—	None · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Shade tolerance	—	None · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record

Heracleum maximum W.Bartram, 1791 16% complete

American cow-parsnip

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

Data sources