Species Identification

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

AttributeThe current selection is Penstemon_jamesii
ClassificationPenstemon Penstemon Cristati
GeneralJames’ Penstemon Blooms: May to June.
AntherWhite, opening opposite and flat.
StaminodeShort, deep yellow beard most of its length, tuft at tip, exserted visibly.
LeavesUpper ones to 10 cm (4”) long & 1/8-1/10 as wide, lower 6 cm (2 3/8”) long & 1/6 as wide (sometimes leaves vary to all narrow, with lower leaves 1/10 as wide, with stems linear and tapered at end or spatulate and blunt or lanceolate and tapered at both ends, upper leaves 1/15 as wide) They may be shiny, dark green to almost grey-green, smooth or hairy, linear or lanceolate and taper to a point. Bracts are conspicuous among flowers and are often longer, different colonies may be toothed or smooth-edged.
Stems1-5 dm (4-20”) tall, erect, smooth or downy.
InflorescenseCrowded, cyme 2-4 flowered.
CorollaLarge, 25-35 mm (7/8-1 Ό”) long, blue-violet to lavender, broad, puffy above and below, large for size of plant, crowded onto one side of stem, purple guidelines in throat, larger lower lip has numerous, long, white hairs, upper lip projects out, glandular-pubescent externally.
Flower Color
Calyx8-12mm (to 3/8”) long, lanceolate to ovate, tapered or sharp-tipped, sticky hairs, papery edges.
HabitatPlains, roadside, near forest edges, 1400-2000 m (4500-7000’) elev.
RangeSouthern CO, c & e NM, w TX.