Data sources

Each value Trefle shows for Penstemon virgatus, 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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Sourced3 Source not recorded10 Not on the record1 Sources: TRY Plant Trait Database

Field	Shown	What the sources say
Core
Author	A.Gray	No source recorded	Source not recorded
Bibliography	W.H.Emory, Rep. U.S. Mex. Bound. 2(1): 112 (1858)	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	1858	No source recorded	Source not recorded
Descriptive
Common name	Upright blue beardtongue	No source recorded	Source not recorded
Observations	Colorado to Mexico (San Luis Potosí, Jalisco, Colima)	No source recorded	Source not recorded
Morphology
Average height	23 cm	23 cm · TRY Plant Trait Database · Measured · 13 observations · 2026-10-09 TRY 7.0 datasets 193	Sourced
Growth habit	Forb/herb	No source recorded	Source not recorded
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 193, 460	Sourced
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 193, 444	Sourced
Usda legacy
C n ratio	empty	24.5 · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 193, 412	Not on the record

Penstemon virgatus A.Gray, 1858 16% complete

Upright blue beardtongue

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

Data sources