Erythranthe linearifolia |
Erythranthe glaucescens |
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primrose monkeyflower, threadleaf primrose monkeyflower |
shield-bract monkeyflower |
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Habit | Perennials, rhizomatous, densely cespitose, forming large patches and turfs 0.3–1 m diam. | Annuals, slender-taprooted or fibrous-rooted, rarely with runners from basal nodes. |
Stems | erect to ascending, simple, 2–10 cm, sparsely hirsute and stipitate-glandular, internodes shortened. |
erect, simple or branched, terete, sometimes 4-angled distally, (5–)30–60(–80) cm, glabrous, glaucous. |
Leaves | basal or near basal, sometimes proximal cauline, subrosulate; petiole 0 mm; blade 1-veined or palmately 3-veined, linear to narrowly oblanceolate, 15–50 × 1.5–5 mm, base long-cuneate, often subclasping, margins entire, dentate-serrate, or distally dentate, apex acute, surfaces glabrous or adaxial sparsely short-pilose, eglandular. |
basal and cauline; petiole: basal and proximal cauline as long as or much longer than blade, slender, sometimes pubescent or villous, distals absent; blade palmately 3–5-veined, (proximal) ovate to ovate-elliptic or orbicular-ovate, sometimes subcordate, 10–50 mm, midcauline to distal orbicular, 5–45 mm wide, distinctly connate-perfoliate, disclike distally, base rounded to subcordate, margins: proximals denticulate to dentate or coarsely, irregularly toothed, sometimes lobed at base, distals nearly entire or toothed, teeth scattered, small, apex rounded, surfaces glabrous, glaucous. |
Flowers | herkogamous, 1. |
herkogamous, 1–16, from distal nodes, sometimes from nearly all, chasmogamous. |
Styles | glabrous. |
minutely hirtellous-puberulent. |
Corollas | yellow, red-spotted or -striped, bilaterally symmetric, weakly bilabiate, loosely hirsute on abaxial side of opening; tube-throat narrowly campanulate, 18–22 mm, exserted beyond calyx margin; lobes broadly obovate-oblong, apex rounded- or truncate-notched, throat open. |
yellow, sometimes with a median splotch, abaxial limb densely dark yellow, others much lighter, throat floor and tube red-dotted, bilaterally symmetric, bilabiate; tube-throat funnelform, 12–23 mm, exserted 4–8 mm beyond calyx margin; limb expanded 14–36 mm. |
Fruiting pedicels | (40–)65–85(–120) mm, glabrous or sparsely stipitate-glandular near base. |
10–50 mm, glabrous, glaucous. |
Fruiting calyces | winged- or plicate-angled, tubular-campanulate, weakly or not inflated, 9–10(–12) mm, glabrous. |
broadly campanulate, inflated, sagittally compressed, 7–16 mm, glabrous, glaucous, throat closing. |
Capsules | included, 6–7 mm. |
included, 5–11 mm. |
Anthers | included or slightly exserted, margins ciliate, glabrous. |
included, glabrous. |
2n | = 28. |
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Erythranthe linearifolia |
Erythranthe glaucescens |
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Phenology | Flowering Jul–Sep. | Flowering Mar–May(–Jun). |
Habitat | Wet banks, Darlingtonia seeps and bogs, seepages in serpentine talus. | Seepage areas, wet rocks, moist cliffs, pool edges, gravelly stream banks, serpentine outcrops, roadsides and roadcuts, low pastures, riparian woodlands, blue oak woodlands, chaparral, grasslands. |
Elevation | 600–2800 m. (2000–9200 ft.) | 80–900(–1100) m. (300–3000(–3600) ft.) |
Distribution |
CA
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CA
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Discussion | Erythranthe linearifolia is endemic to serpentine substrates in Shasta, Siskiyou, and Trinity counties; typical E. primuloides occurs in the same area but not on serpentine. Erythranthe linearifolia is distinct from E. primuloides especially in its narrow leaves and cespitose habit. A collection from Tulare County appears to be E. linearifolia (Shevock 10597, CAS), but this appears to be far out of range and the voucher should be reexamined; it probably is better identified as an unusual collection of E. primuloides. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Plants from one locality in Butte County are unusual in producing filiform, small-leaved runners from basal cauline nodes. Erythranthe glaucescens is known only from Butte and Tehama counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 390. | FNA vol. 17, p. 417. |
Parent taxa | Phrymaceae > Erythranthe | Phrymaceae > Erythranthe |
Sibling taxa | ||
Synonyms | Mimulus primuloides var. linearifolius, M. linearifolius, M. primuloides subsp. linearifolius | Mimulus glaucescens, M. guttatus var. glaucescens |
Name authority | (A. L. Grant) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 35. (2012) | (Greene) G. L. Nesom: Phytoneuron 2012-39: 43. (2012) |
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