Species Identification

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AttributeThe current selection is Penstemon_guadalupensis
ClassificationPenstemon Penstemon Cristati
GeneralGuadalupe River Penstemon. Blooms: March to May.
AntherOpening completely, shield-shaped and flat, brown or black, smooth.
StaminodeSlight golden beard at tip, barely extruding from orifice.
LeavesLower ones to 45 mm (1 5/8) long, midstem leaves to 70 mm (2 ) long, linear to elliptic-linear, narrow.
Stems1-4 dm (4-16) tall, herbage smooth, spreading by underground roots.
InflorescenseOpen, sparsely blooming, 1-3 flowered, gray-pubescent (hairs).
CorollaWhite sometimes tinged lavender, smooth outside, slightly glistening on lower lip, lobes spread at right angle to throat, expanding gradually, slightly, mouth narrow, lip not bearded.
Flower Color
Calyx5-7 mm (to ) long, sometimes the length of corolla.
HabitatLimey, gravelly soils in western to central TX.
Range subspecies ernestii: Lower leaves medium width, 1/5 as wide as long, upper leaves as wide, elliptic-lanceolate in shape, corolla small, 12-15 mm (3/8) long, wc TX. subspecies guadalupensis: Lower leaves narrow, 1/7 as wide as long, upper leaves 1/12 as wide, linear at stem, corolla medium length, 15-20 mm (1/2-3/4) long, ec TX.