Data sources

Each value Trefle shows for Frasera speciosa, 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 recorded9 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	Douglas ex Griseb.	No source recorded	Source not recorded
Bibliography	W.J.Hooker, Fl. Bor.-Amer. 2: 66 (1837)	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	1837	No source recorded	Source not recorded
Descriptive
Common name	Elkweed	No source recorded	Source not recorded
Observations	W. & C. U.S.A. to N. Mexico	No source recorded	Source not recorded
Morphology
Average height	13 cm	13.4 cm · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09 TRY 7.0 datasets 251, 256, 468, 517	Differs from sources
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 432, 818	Sourced
Cultivation
Minimum root depth	76 cm	76 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 432, 517, 818	Sourced

Frasera speciosa Douglas ex Griseb., 1837 16% complete

Elkweed

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

Data sources