Species Identification

Interested in the identification of penstemons? Please select a species then click on submit:

AttributeThe current selection is Penstemon_isophyllus
ClassificationPenstemon Penstemon Fasciculus Fasciculi
GeneralEqual-leaf Penstemon (means one leaf-type). Blooms: July to September.
AntherSmooth, opened flat.
StaminodeSmooth or rarely, with slight beard.
Leaves4 cm (1 ) long & 1/5 as wide, entire, narrowly elliptic to lanceolate, fascicled, lower leaves to 6 cm (2 ) long & 1/6 as wide, paired stem leaves mainly same length.
StemsTo 10 dm (40) tall, herbaceous with quite woody base, decumbent or arching.
InflorescenseCyme 3-6 cm (1 -2 ) long, 1-3 flowered.
CorollaVery large, 35-45 mm (1 -1 ) long, deep red, deep rosy-red or purplish red with white to pale cream throat, flared lobes and strongly marked guidelines, rarely white and narrow-tubed.
Flower Color
Calyx6-9 mm (5/8) long, sepals ovate, thin edged.
HabitatMountains, south of area of P. hartwegii.
RangeOaxaca, Puebla states south of Mexico City, Vera Cruz, MX