Penstemon species

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Scientific Name Penstemon albidus USDA PLANTS Symbol
Common Name White Penstemon, White Beardtongue ITIS Taxonomic Serial No.
Family Plantaginaceae (Plantain) SEINet Reference
Description Habitat: Sandy, rocky soils in pastures, fields, roadsides and other open areas.
Plant: Erect perennial, 12 to 24 inches tall; rough, minute hairs on stem and foliage; 2 to 5 stems arising from base.
Leaves: Basal leaves petiolate, mostly smooth edges, hairless or somewhat hairy, narrowly-spatulate to oblong, to 3-1/2 inches long and up to 3/4-inch wide with blunt or rounded tips; stem leaves opposite, sessile and more lanceolate upward with small-toothed edges.
Inflorescence: Whorl-like clusters of pubescent-hairy, funnel-shaped flowers, each up to 3/4-inch long, with pointed sepals 1/4 to 1/3 inch long below; white to pale-lavender petals with prominent purplish veins, united at base with 3-lobed lower lip and somewhat smaller 2-lobed upper lobe; 4 dark-tipped stamens along upper side and a staminode along the lower side.
Bloom Period: April to June.
References: "Wildflowers of Texas" by Michael Eason, "Manual of the Vascular Plants of Texas" by Correll and Johnston and Minnesota Wildflowers.
Texas Status
Scientific Name Penstemon laxiflorus (Penstemon australis ssp. laxiflorus) USDA PLANTS Symbol
Common Name Nodding Beardtongue, Loose-flowered Penstemon ITIS Taxonomic Serial No.
Family Plantaginaceae (Plantain) SEINet Reference
Description Habitat: Pastures, prairies, open woodlands; sandy or gravelly soils.
Plant: Erect to leaning perennial, 12 to 24 inches tall; very fine, minute hairs on stem, upper portion may be branched.
Leaves: Narrowly-lanceolate, 1/1/4 to 3-1/2 inches long; teeth along edges, clasping.
Inflorescence: Long-stalked widely-branched panicles of a few tubular flowers, each 3/4 to 1-1/4 inches long, white to pale-pink petals with lavender veins united at base with upper lip 2-lobed, lower lip 3-lobed; conspicuous, dense yellow hairs on staminode.
Bloom Period: March to June.
References: "Wildflowers of Texas" by Geyata Ajilvsgi and "Wildflowers of the Texas Hill Country" by Marshall Enquist.
Texas Status

© Tom Lebsack 2019