Erythranthe patula

(Pennell) G. L. Nesom

Phytoneuron 2012-39: 39. 2012.

Common names: Stalk-leaf monkeyflower
Endemic
Basionym: Mimulus patulus Pennell Proc. Acad. Nat. Sci. Philadelphia 99: 162. 1947
Treatment appears in FNA Volume 17. Treatment on page 397. Mentioned on page 381.

Annuals, fibrous-rooted or filiform-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. Leaves cauline, basal not persistent; petiole (5–) 8–25 mm; blade palmately 3-veined, deltate or ovate to ovatelanceolate, 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. Flowers herkogamous, 1–10, from proximal to distal nodes. Fruiting pedicels 10–25 (–38) mm, stipitate-glandular, hairs 0.2–0.5 mm, gland-tipped. 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. 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. Styles glabrous. Anthers included, glabrous. Capsules included, 4–6 mm. 2n = 32.


Phenology: Flowering Apr–May(–Aug).
Habitat: Ephemeral seeps, springs, rocky stream banks, moist basalt, fine gravel on bedrock, muddy hillside seeps, crevices.
Elevation: 200–1900(–2900) m.

Distribution

Alta., B.C., Idaho, Mont., Oreg., Wash., Wyo.

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.

Selected References

None.

Lower Taxa

None.
... more about "Erythranthe patula"
bilabiate +, regular +  and symmetric +
loculicidal +
rounded +  and truncate +
Guy L. Nesom +  and Naomi S. Fraga +
(Pennell) G. L. Nesom +
rosulate +  and subrosulate +
not persistent +
rounded;cuneate-truncate +
Mimulus patulus +
1.2 cm12 mm <br />0.012 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
ovate;ovatelanceolate +
not leathery +  and semifleshy +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
compressed +, inflated +  and tubular +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Stalk-leaf monkeyflower +
regular +  and bilabiate +
compressed +
Alta. +, B.C. +, Idaho +, Mont. +, Oreg. +, Wash. +  and Wyo. +
200–1900(–2900) m. +
hairy +  and glabrous +
nodding;spreading;nodding;spreading;erect +
reduced +
Ephemeral seeps, springs, rocky stream banks, moist basalt, fine gravel on bedrock, muddy hillside seeps, crevices. +
gland-tipped +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
pronounced +
3 (?) +  and Not 5 (?) +
reduced +  and longer +
sparsely stipitate-glandular +  and sparsely hirtellous +
lobed +, toothed +  and denticulate +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
Flowering Apr–May(–Aug). +
Phytoneuron +
flattened +  and ellipsoid +
3 +  and 5 +
proximal +  and middle +
15 cm150 mm <br />0.15 m <br /> (24 cm240 mm <br />0.24 m <br />) +
straight +
erect;ascending +
stipitate-glandular +
geniculate +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
stipitate-glandular +
Mimulus sect. Erythranthe +  and Mimulus subg. Synplacus +
Erythranthe patula +
Erythranthe +
species +
0.7 cm7 mm <br />0.007 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
filiform-taprooted +  and fibrous-rooted +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
stipitate-glandular +
inflated +  and tubular +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
perennial +  and annual +
herb +  and subshrub +
terrestrial +  and aquatic +
semiaquatic +  and terrestrial +
9 +, 8 +  and 7 +