Erythranthe rhodopetra

N. S. Fraga

Aliso 30: 66, figs. 26–28. 2012.

Common names: Red Rock Canyon monkeyflower
EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 387. Mentioned on page 380.

Annuals, taprooted. Stems erect, simple or branched from basal nodes, 6–7 (–21) cm, minutely puberulent. Leaves 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, 1–46, from distal or medial to distal nodes. Fruiting pedicels erect to ascending, 10–33 (–40) mm. Fruiting calyces becoming reddish, campanulate to cylindric, 5–10 mm, margins distinctly toothed or lobed, minutely puberulent, ribs thickened, lobes pronounced, erect, margins glabrous. Corollas 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. Styles glabrous. Anthers included, glabrous. Capsules included, 4–9 mm.


Phenology: Flowering Mar–May.
Habitat: Washes in Mojave Desert scrub.
Elevation: 600–900 m.

Discussion

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.

Selected References

None.

Lower Taxa

None.
... more about "Erythranthe rhodopetra"
bearded +  and glabrous +
loculicidal +
acute +  and obtuse +
Guy L. Nesom +  and Naomi S. Fraga +
N. S. Fraga +
rosulate +  and subrosulate +
not persistent +
attenuate +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
linear;oblanceolate +
not leathery +  and semifleshy +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
compressed +, inflated +  and tubular +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Red Rock Canyon monkeyflower +
regular +  and bilabiate +
pale-pink;pink +
compressed +
600–900 m. +
hairy +  and glabrous +
3.3 cm33 mm <br />0.033 m <br /> (4 cm40 mm <br />0.04 m <br />) +
erect;ascending +
1 cm10 mm <br />0.01 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
reduced +
Washes in Mojave Desert scrub. +
alternate +, opposite +, rosulate +  and subrosulate +
persistent +  and deciduous +
expanded +
pronounced +
3 (?) +  and Not 5 (?) +
notched +
reduced +  and longer +
glabrous +  and puberulent +
lobed +  and toothed +
basal +  and superior +
tenuinucellate +  and unitegmic +
orthotropous +  and anatropous +
yellow patch +
0 cm0 mm <br />0 m <br /> (?) +
Flowering Mar–May. +
flattened +  and ellipsoid +
3 +  and 5 +
Endemic +  and Conservation concern +
proximal +  and middle +
branched +  and simple +
7 cm70 mm <br />0.07 m <br /> (21 cm210 mm <br />0.21 m <br />) +
puberulent +
4-angled +  and terete +
6 cm60 mm <br />0.06 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Mimulus sect. Erythranthe +  and Mimulus subg. Synplacus +
Erythranthe rhodopetra +
Erythranthe +
species +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
campanulate +  and cylindric +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
perennial +  and annual +
herb +  and subshrub +
terrestrial +  and aquatic +
semiaquatic +  and terrestrial +
9 +, 8 +  and 7 +