Species Identification

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

AttributeThe current selection is Penstemon_laxiflorus
ClassificationPenstemon Penstemon Penstemon Penstemon
GeneralOpen-flowered Penstemon It is considered similar to P. arkansanus. [syn: P. australis subsp. laxiflorus] Blooms: March to June.
AntherDark, spreading apart, open all across with minute teeth along edges, exserted from corolla, smooth.
StaminodeShort, dense yellow beard exserted from orifice.
LeavesNarrow, lanceolate upper leaves 1 dm (4) long & 1/7th as wide; lower leaves to 1.5 dm (6) long and 1/4th as wide; basal leaves few, reduced, serrate to dentate leaves, smooth or finely fuzzy.
Stems3-7 dm (12-28) tall, upper stems bare-looking, with long internodes, minutely fuzzy over surfaces, green or purplish.
InflorescenseEssentially hairless, cyme usually 3-6 cm (1 -2 ) long, 3-9 flowered in clusters offset from main stem on short branches forming open panicles 1/5 to 1/3 the height of the plant.
Corolla20-25 mm (to 1) long, narrow, white, pink or pale lavender, mouth round, extended lower lip, sometimes almost closing the mouth, lightly sticky/hairy outside and inside with red-violet guidelines.
Flower Color
Calyx3-5 mm (<1/4) long, oblong to ovate, acute to acuminate tips, slightly thinned at edges, finely fuzzy/sticky.
HabitatSandy, acid soils on woodland verges at low elevations
RangeEastern TX, ec OK, LA, AK, MS, AL, GA and the Florida Panhandle.