Erythranthe laciniata |
Erythranthe hallii |
|
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cut-leaf monkeyflower |
Hall's monkeyflower |
|
Habit | Annuals, slender-taprooted or fibrous-rooted. | Annuals, fibrous-rooted, sometimes apparently rooting at proximal nodes if stems proximally decumbent. |
Stems | erect, simple or branched from base, 3–38 cm, glabrous or sparsely hirtellous, finely villosulous-glandular above nodes. |
erect, simple, 4-angled, 2–8 cm, slender, glabrous. |
Leaves | cauline, basal deciduous by flowering; petiole 1–35 mm, distals 0 mm; blade 1-veined or palmately 3-veined, elliptic to elliptic-obovate, oblanceolate, or oblong, 3–55 mm, longer than wide, base attenuate, margins narrowly pinnately lobed or dissected, sometimes merely shallowly toothed, apex acute to obtuse, surfaces glabrate. |
basal and cauline or basal deciduous, largest at mid stem or above, cauline relatively few on long internodes; petiole: basal and proximals to midcauline 1–4 mm, distals 0 mm; blade palmately 3-veined, ovate to ovate-lanceolate, 5–11 × 3–9 mm, base truncate to cuneate, margins very shallowly dentate or denticulate, apex acute to obtuse, surfaces glabrous or distals and bracteals sparsely villous, hairs vitreous, flattened, eglandular, multicellular. |
Flowers | plesiogamous, 2–8, from medial to distal nodes, chasmogamous, sometimes cleistogamous. |
plesiogamous, (1–)4–10, sometimes from all nodes, usually beginning about mid stem, cleistogamous. |
Styles | glabrous. |
glabrous. |
Corollas | yellow, throat red-spotted, abaxial limb of larger usually with 1 large red splotch, bilaterally symmetric, ± bilabiate; tube-throat funnelform, 4–6 mm, exserted 1–2 mm beyond calyx margin; limb expanded 5–6 mm. |
yellow, usually red-dotted, bilaterally or nearly radially symmetric, bilabiate or nearly regular; tube-throat narrowly cylindric, 4–6 mm, exserted 0.5–1 mm beyond calyx margin; limb barely expanded. |
Fruiting pedicels | nodding 30–140º at calyx base, 5–25 mm. |
usually deflexed 90º at calyx, 6–14 mm, longer than subtending leaves. |
Fruiting calyces | red-spotted, cylindric-campanulate, inflated, sagittally compressed, 8–10 mm, glabrate, throat closing, lobes ca. equal size or adaxial slightly longer. |
sometimes red-dotted, broadly elliptic-ovoid, inflated, sagittally compressed, (5–)7–10 mm, glabrous, throat closing, adaxial lobe not distinctly longer than abaxial, not falcate. |
Capsules | included, stipitate, 5–7 mm. |
included, 4–6 mm. |
Anthers | included, glabrous. |
included, glabrous. |
2n | = 28. |
= 32. |
Erythranthe laciniata |
Erythranthe hallii |
|
Phenology | Flowering Apr–Jul(–Aug). | Flowering May–Aug. |
Habitat | Cracks, depressions, and seeps in granite outcrops, ledges, talus and scree, rocky streamsides, rocky slopes, roadsides, intermittent drainages. | Ledges, seeps, along streams, wet meadows. |
Elevation | 900–2300(–3300) m. (3000–7500(–10800) ft.) | 1900–3200 m. (6200–10500 ft.) |
Distribution |
CA
|
CO |
Discussion | Erythranthe laciniata is known from Amador County south to Kern County. As in Erythranthe nasuta, the adaxial calyx lobe in E. laciniata tends to be narrowly lanceolate to triangular (noselike) and perceptibly falcate, curving slightly upward both in flower and in fruit. The adaxial lobe is not so prominently protruding as it often is in E. nasuta. Corolla size is variable in Erythranthe laciniata, but the size of those with an open throat (versus much reduced in size and apparently cleistogamous) is not strongly correlated with size of the individual plant, and all on one plant are about the same size (compare with E. nasuta). Corollas on some plants, however, are all or nearly all greatly reduced and apparently cleistogamous. Fertilization in even the larger corollas apparently is autogamous; the anther pairs are slightly separated or equal in level, and the stigma is in the middle of the anthers or at the level of the adaxial pair. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Erythranthe hallii is known from Boulder, Clear Creek, Fremont, Grand, Jefferson, Larimer, Routt, and Saguache counties. The Colorado population system is morphologically and geographically coherent. Erythranthe hallii is similar to E. arvensis; both have four-angled stems, autogamous reproduction, a tendency to root at basal nodes and distally, and both have bracteal leaves villous with vitreous, flattened, eglandular, multicellular hairs, although this vestiture is barely developed and often absent in E. hallii. The only reported chromosome number from the Colorado plants (2n = 32) also appears to be distinct among possible relatives of E. hallii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 419. | FNA vol. 17, p. 423. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus laciniatus, M. eisenii | Mimulus hallii, M. guttatus var. hallii |
Name authority | (A. Gray) G. L. Nesom: Phytoneuron 2012-39: 44. (2012) | (Greene) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) |
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