Penstemon procerus var. formosus
Penstemons Found East of the Cascade Mts.
http://ghs.gresham.k12.or.us/science/ps/nature/basin/5petal/figwort/penstemon/small.htm
Small-flowered Penstemon
Penstemon procerus var. formosus
Small-flowered penstemon (var. formosum) as seen at the high point of the Frances Lake Trail, Eagle Cap
Wilderness of northeastern Oregon............Late July, 1997.
The photo at right shows a close-up of small-flowered penstemon (variety formosum) from Strawberry Mt.,
Strawberry Mt. Wilderness.............July 5, 2002.
Characteristics:
Small-flowered penstemon is also known as alpine penstemon. It is an attractive
perennial wildflower with one to several erect stems arising 5-40 cm from a tuft or mat of
short leafy stems at the base. The basal leaves are 1-6 cm long on short petioles with
entire margins. The leaf surface is glabrous. The stem leaves are reduce in size upwards
on the stem. These are mostly lanceolate in shape with sessile or clasping bases.
The inflorescence consists of one to several dense verticillasters which are glabrous. The
sepals are elliptic to ovate in shape and measure from 1.5- 6 mm long. They are glabrous
to slightly pubescent. The corollas are tubular with the lobes spreading at the tip. The
corollas usually range from 6-11 mm long and are generally thin and not much expanded
in cross-section. The corolla usually ranges from blue and purple in color to creamy with
a lighter throat. The outer surface of the corolla is glabrous while the palate is lightly
bearded. The glabrous anther sacs split completely. The staminode is lightly bearded
(sometimes glabrous in var. formosum).
Varieties:
Variety brachyanthus: Plants from 15-30 cm high with 2-4 verticillasters in the
inflorescence. Calyx 1.5-3 mmlong, the sepals with a long, thin tip. Plants of the Oregon
Cascades and Sierra Nevada of California.
Variety formosum: Plants small, ranging from 5-15 cm high with 1 dense thryse or
occasionally with 1-2 vertillicasters in the inflorescence. Calyx 1.5-3 mm long, the
individual sepals with a short, sharp tip. Plants of high altitude in the Wallowa and Blue
Mts. of northeastern Oregon, or the Klamath region of Oregon and California.
Variety procerus: Plants from 15-30 cm high with 2-4 verticillasters in the inflorescence.
Calyx 3-6 mm, individual sepals with a short, sharp tip. Plants found east of the Cascades
of Washington and Oregon east to the Rocky Mts.
Variety tolmiei: Plants small, ranging from 5-15 cm high with 1 dense thryse or
occasionally with 1-2 vertillicasters in the inflorescence. Calyx 3-6 mm long, the
individual sepals with a long, thin tip or with acute tips. Plants of the Olympic Mts. or
Cascade Mts. of Washington and British Columbia.
Habitat:
Small-flowered penstemon may be found in dry meadows and on open to forested slopes
in the foothills up to alpine habitats.
Range:
Small-flowered penstemon may be found from Alaska east to the Yukon and south to the
Pacific Northwest, and east to western Montana, and the Rocky Mts. of Wyoming and
Colorado.
Variety brachyanthus is found in the Oregon Cascades south to northern California and
also in the Wallowa Mts. of northeastern Oregon.
Variety formosus is found high in the Wallowa and Blue Mts., atop the Steens Mt., and
also in the Klamath region of Oregon south into Nevada and California.
Variety procerus is found from Alaska and the Yukon south through British Columbia to
eastern Washington and eastern Oregon and east to the Rocky Mts. of Montana, Idaho,
Wyoming and Colorado.
Variety tolmiei is found in the Olympic Mts. and Washington Cascades north into British
Columbia.
Small-flowered penstemon (var. formosus) as seen at the high point of the Frances Lake Trail, Eagle Cap
Wilderness of northeastern Oregon............Late July, 1997.
Paul Slichter