Flora of North America species comparison

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Penstemon cardinalis var. cardinalis

Penstemon cardinalis var. regalis
Photo is of parent taxon

cardinal beardtongue
Photo is of parent taxon

cardinal beardtongue
Leaves

not leathery, cauline blade elliptic to spatulate or ovate.

leathery, cauline blade ovate to subcordate, sometimes elliptic.
Thyrses

proximal bracts ovate to lanceolate.

proximal bracts suborbiculate to ovate.
Flowers

calyx lobes 1.6–3.5(–4) × 1.4–2 mm.

calyx lobes 4–6 × 2.3–3 mm.
2n

= 16.

Penstemon cardinalis var. cardinalis

Penstemon cardinalis var. regalis
Phenology Flowering Jun–Jul. Flowering May–Jun(–Aug).
Habitat Canyons and rocky slopes, pinyon-juniper woodlands, pine forests. Rocky canyons, pine woodlands.
Elevation 2100–2700 m. (6900–8900 ft.) 1400–2500 m. (4600–8200 ft.)
Distribution
from FNA
NM
[BONAP county map]
from FNA
NM; TX
[BONAP county map]
Discussion

Variety cardinalis is known from the Capitan and Sacramento mountains in Lincoln and Otero counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Variety regalis is known from the Guadalupe Mountains in New Mexico (Eddy County) and the Davis, Guadalupe, and Sierra Diablo mountains in western Texas (Culberson and Jeff Davis counties).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 148. FNA vol. 17, p. 148.
Parent taxa Plantaginaceae > Penstemon > subg. Penstemon > sect. Elmigera > Penstemon cardinalis Plantaginaceae > Penstemon > subg. Penstemon > sect. Elmigera > Penstemon cardinalis
Sibling taxa
P. cardinalis var. regalis
P. cardinalis var. cardinalis
Synonyms P. regalis, P. cardinalis subsp. regalis
Name authority unknown (A. Nelson) C. C. Freeman: PhytoKeys 80: 34. (2017)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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