Data sources

Each value Trefle shows for Penstemon cobaea, 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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Sourced4 Source not recorded9 Not on the record1 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	Nutt.	No source recorded	Source not recorded
Bibliography	Trans. Amer. Philos. Soc. ser. 2, 5:182. 1835	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	1835	No source recorded	Source not recorded
Descriptive
Common name	Cobaea beardtongue	No source recorded	Source not recorded
Observations	C. U.S.A. to Arkansas	No source recorded	Source not recorded
Morphology
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
Bloom months	may	may · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 163	Sourced
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 28, 110, 460	Sourced
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 20, 57, 96, 444, 822	Sourced
Usda legacy
C n ratio	empty	28.9 · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 412	Not on the record

Penstemon cobaea Nutt., 1835 16% complete

Cobaea beardtongue

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

Data sources