Burke: Erythranthe ptilota vs. Erythranthe caespitosa

	Erythranthe ptilota	Erythranthe caespitosa
	sessile-leaved monkey-flower	large mountain monkey-flower
Habit	Rhizomatous perennials, occasionally rooting at nodes nearest base; stems 20-80 cm, prostrate or decumbent to ascending, only slightly branched, villous eglandular hairs 1-2 mm, occasionally with shorter stipitate-glandular hairs, internodes evident.	Rhizomatous perennials, rooting at nodes nearest the base, occasionally producing runners with creeping form and small leaves, forming colonies of mats, rhizomes threadlike; stems 3-10 cm, usually prostrate or with some curving upward distally, usually massed, round or somewhat flat, branching, may be glabrous or slightly hirtellous or with stalked glands.
Leaves	Leaves cauline, basal ones not persistent, commonly congested; subsessile to sessile; blade oblong to lanceolate, 30-70 mm long and 10-22 mm broad, pinnate venation, base rounded, margins toothed to finely toothed, apex acute, surfaces hairy as stems.	Leaves both basal and cauline; petiolate, proximal petioles 2-5 mm, becoming sessile distally; blade commonly purplish beneath, orbicular to ovate to narrowly elliptic, leaves nearest base somewhat lyrate, 3-12 mm and becoming larger farther from base, palmate venation with 3 veins, base wedge-shaped, margins entire to barely finely toothed, apex obtuse, somewhat puberulent above and beneath, hairs minute and stipitate-glandular.
Flowers	Axillary flowers 4-10, emerging from nodes at mid- to ends of stems; fruiting pedicels generally 22-50 mm, hairy as stems; calyx winged, cylindric-campanulate, barely inflated, 10-12 mm, villous with gland-tipped hairs, lobes spreading noticeably, strongly unequal, linear-lanceolate to slender-triangular, 5-9 mm, apex long acuminate-apiculate; corollas yellow, throat faintly marked with blackish-brownish lines, symmetric almost radially or weakly bilaterally, nearly regular or weakly bilabiate; tube-throat slenderly bell-shaped, 15-18 mm, protruding beyond calyx margin; lobe apex rounded; styles glabrous; anthers not protruding, covered with fine hairs that are stiff to slightly rigid.	Axillary flowers 1-3, from nodes farthest from base, usually solitary; fruiting pedicels generally 10-30 mm, somewhat villous with short gland-tipped hairs, occasionally hirtellous; calyx broadly bell-shaped, inflated, compressed along sagittal plane, 7-15 mm, glabrous or hirtellous or stipitate-glandular, throat closing, lobe pair nearest base curving upwards, other lobes 3-5 mm, prominently protruding; corollas yellow with dark red spots, symmetric bilaterally, bilabiate; tube-throat widely funnel-shaped to nearly cylindric, 15-18 mm, protruding beyond calyx margin; lower limb deflexed and spreading, upper limb curving upward, palate partially closed; styles slightly hirtellous; anthers not protruding, glabrous.
Fruits	Capsules 6-8 mm, included.	Capsules 4-5 mm, included.

	Erythranthe ptilota	Erythranthe caespitosa
Flowering time	June-September	July-September
Habitat	Wet places generally at low elevations.	Wet meadows and wet, rocky slopes at high elevations in the mountains.
Distribution	Occurring west of the Cascades crest in Washington; southern British Columbia to California. [WildflowerSearch map]	Occurring in the Olympics and Cascades mountains of Washington; British Columbia south to Oregon, east to Idaho. [WildflowerSearch map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	E. alsinoides, E. ampliata, E. arvensis, E. breviflora, E. breweri, E. caespitosa, E. cardinalis, E. decora, E. dentata, E. floribunda, E. grandis, E. guttata, E. inflatula, E. jungermannioides, E. lewisii, E. microphylla, E. moschata, E. nasuta, E. patula, E. primuloides, E. pulsiferae, E. scouleri, E. suksdorfii, E. washingtonensis	E. alsinoides, E. ampliata, E. arvensis, E. breviflora, E. breweri, E. cardinalis, E. decora, E. dentata, E. floribunda, E. grandis, E. guttata, E. inflatula, E. jungermannioides, E. lewisii, E. microphylla, E. moschata, E. nasuta, E. patula, E. primuloides, E. ptilota, E. pulsiferae, E. scouleri, E. suksdorfii, E. washingtonensis
Web links	Local floras: BC, CA, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Erythranthe caespitosa

sessile-leaved monkey-flower

large mountain monkey-flower

Habit

Rhizomatous perennials, occasionally rooting at nodes nearest base; stems 20-80 cm, prostrate or decumbent to ascending, only slightly branched, villous eglandular hairs 1-2 mm, occasionally with shorter stipitate-glandular hairs, internodes evident.

Rhizomatous perennials, rooting at nodes nearest the base, occasionally producing runners with creeping form and small leaves, forming colonies of mats, rhizomes threadlike; stems 3-10 cm, usually prostrate or with some curving upward distally, usually massed, round or somewhat flat, branching, may be glabrous or slightly hirtellous or with stalked glands.

Leaves

Leaves cauline, basal ones not persistent, commonly congested; subsessile to sessile;

blade oblong to lanceolate, 30-70 mm long and 10-22 mm broad, pinnate venation, base rounded, margins toothed to finely toothed, apex acute, surfaces hairy as stems.

Leaves both basal and cauline; petiolate, proximal petioles 2-5 mm, becoming sessile distally;

blade commonly purplish beneath, orbicular to ovate to narrowly elliptic, leaves nearest base somewhat lyrate, 3-12 mm and becoming larger farther from base, palmate venation with 3 veins, base wedge-shaped, margins entire to barely finely toothed, apex obtuse, somewhat puberulent above and beneath, hairs minute and stipitate-glandular.

Flowers

Axillary flowers 4-10, emerging from nodes at mid- to ends of stems; fruiting pedicels generally 22-50 mm, hairy as stems;

calyx winged, cylindric-campanulate, barely inflated, 10-12 mm, villous with gland-tipped hairs, lobes spreading noticeably, strongly unequal, linear-lanceolate to slender-triangular, 5-9 mm, apex long acuminate-apiculate;

corollas yellow, throat faintly marked with blackish-brownish lines, symmetric almost radially or weakly bilaterally, nearly regular or weakly bilabiate;

tube-throat slenderly bell-shaped, 15-18 mm, protruding beyond calyx margin;

lobe apex rounded;

styles glabrous;

anthers not protruding, covered with fine hairs that are stiff to slightly rigid.

Axillary flowers 1-3, from nodes farthest from base, usually solitary; fruiting pedicels generally 10-30 mm, somewhat villous with short gland-tipped hairs, occasionally hirtellous;

calyx broadly bell-shaped, inflated, compressed along sagittal plane, 7-15 mm, glabrous or hirtellous or stipitate-glandular, throat closing, lobe pair nearest base curving upwards, other lobes 3-5 mm, prominently protruding;

corollas yellow with dark red spots, symmetric bilaterally, bilabiate;

tube-throat widely funnel-shaped to nearly cylindric, 15-18 mm, protruding beyond calyx margin; lower limb deflexed and spreading, upper limb curving upward, palate partially closed;

styles slightly hirtellous;

anthers not protruding, glabrous.

Fruits

Capsules 6-8 mm, included.

Capsules 4-5 mm, included.