Erythranthe patula |
Erythranthe rhodopetra |
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stalk-leaf monkey-flower |
red rock canyon monkeyflower |
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Habit | Annuals, fibrous-rooted or filiform-taprooted. | Annuals, taprooted. |
Stems | erect to ascending, straight or geniculate at nodes, usually simple, (3–)5–15(–24) cm, stipitate-glandular, hairs 0.2–0.5 mm, gland-tipped. |
erect, simple or branched from basal nodes, 6–7(–21) cm, minutely puberulent. |
Leaves | cauline, basal not persistent; petiole (5–)8–25 mm; blade palmately 3-veined, deltate or ovate to ovate-lanceolate, 4–12(–17) × 3–10(–14) mm, base rounded to cuneate-truncate, margins usually denticulate, apex acute to obtuse, surfaces stipitate-glandular, hairs 0.2–0.5 mm, gland-tipped. |
cauline, basal not persistent; petiole 0 mm; blade palmately 3-veined, linear to oblanceolate, 5–22 × 1–7(–10) mm, base attenuate, margins entire, apex acute to obtuse, surfaces minutely puberulent. |
Flowers | herkogamous, 1–10, from proximal to distal nodes. |
herkogamous, 1–46, from distal or medial to distal nodes. |
Styles | glabrous. |
glabrous. |
Corollas | yellow, abaxial limb usually with a few red or brownish dots, radially or bilaterally symmetric, regular or weakly bilabiate; tube-throat funnelform, 7–8 mm, exserted beyond calyx margin; lobes oblong, apex rounded to truncate. |
pale pink to pink, throat broad, yellow, palate with a broad yellow patch covering ridges and lateral areas, bilaterally symmetric, strongly bilabiate; tube-throat cylindric to funnelform, 9–15 mm, exserted beyond calyx margin; limb expanded 16–25 mm, lobes notched, abaxial limb glabrous or sparsely bearded. |
Fruiting pedicels | 10–25(–38) mm, stipitate-glandular, hairs 0.2–0.5 mm, gland-tipped. |
erect to ascending, 10–33(–40) mm. |
Fruiting calyces | tubular, weakly or not inflated, 5–6(–7) mm, margins distinctly toothed or lobed, sparsely stipitate-glandular to sparsely hirtellous, lobes pronounced, erect. |
becoming reddish, campanulate to cylindric, 5–10 mm, margins distinctly toothed or lobed, minutely puberulent, ribs thickened, lobes pronounced, erect, margins glabrous. |
Capsules | included, 4–6 mm. |
included, 4–9 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 32. |
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Erythranthe patula |
Erythranthe rhodopetra |
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Phenology | Flowering Apr–May(–Aug). | Flowering Mar–May. |
Habitat | Ephemeral seeps, springs, rocky stream banks, moist basalt, fine gravel on bedrock, muddy hillside seeps, crevices. | Washes in Mojave Desert scrub. |
Elevation | 200–1900(–2900) m. (700–6200(–9500) ft.) | 600–900 m. (2000–3000 ft.) |
Distribution |
ID; MT; OR; WA; WY; AB; BC
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CA |
Discussion | Erythranthe patula is distinctive with its long-petiolate leaves with ovate blades and its small, weakly bilabiate to nearly radially symmetric corollas. Vestiture may include only minute, stipitate-glandular hairs or it may be an intergrading mix of stipitate-glandular hairs and minute (0.1–0.2 mm), sharp-pointed, eglandular hairs. Plants may have stipitate-glandular pedicels and calyces but hirtellous, eglandular stems, or they may have stipitate-glandular stems and pedicels but hirtellous calyces. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erythranthe rhodopetra is endemic to the El Paso Mountains in Kern County. The species was treated previously as part of E. palmeri but is distinguished by having a wider limb (16–25 mm) than E. palmeri (8–15 mm) and pale pink flowers with a broad yellow palate and orifice. In contrast, E. palmeri has deep pink corollas with two yellow ridges on the palate. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 397. | FNA vol. 17, p. 387. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus patulus | |
Name authority | (Pennell) G. L. Nesom: Phytoneuron 2012-39: 39. (2012) | N. S. Fraga: Aliso 30: 66, figs. 26–28. (2012) |
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