Diplacus pygmaeus

Diplacus pygmaeus
Scientific classification
Kingdom:Plantae
Clade:Angiosperms
Clade:Eudicots
Clade:Asterids
Order:Lamiales
Family:Phrymaceae
Genus:Diplacus
Species: D. pygmaeus
Binomial name
Diplacus pygmaeus
(A.L.Grant) G.L.Nesom

Diplacus pygmaeus is a species of monkeyflower known by the common name Egg Lake monkeyflower.[1][2][3][4]

Distribution

It is native to northeastern California and adjacent sections of Oregon, where it grows in sagebrush and wet, open habitat in scrub, forest, and woodland. Once thought to be extremely rare and vulnerable, the plant is actually locally common in areas where the soil has been recently disturbed, allowing a probably large seed bank to germinate.[5]

Despite its annual population sometimes running into the millions, the plant is threatened when large-scale disturbances occur.[5][6]

Description

This is a petite annual herb forming dense tufts often just a few millimeters high. The lightly hairy oval or widely lance-shaped leaves are up to 1.5 centimeters long. The yellow flower is no more than a centimeter long, its tubular base encapsulated in a hairy calyx of sepals.

References

  1. ↑ Barker, W.R.; Nesom, G.L.; Beardsley, P.M.; Fraga, N.S. (2012), "A taxonomic conspectus of Phrymaceae: A narrowed circumscriptions for Mimulus, new and resurrected genera, and new names and combinations" (PDF), Phytoneuron, 2012-39: 1–60
  2. ↑ Beardsley, P. M.; Yen, Alan; Olmstead, R. G. (2003). "AFLP Phylogeny of Mimulus Section Erythranthe and the Evolution of Hummingbird Pollination". Evolution. 57 (6): 1397–1410. doi:10.1554/02-086. JSTOR 3448862.
  3. ↑ Beardsley, P. M.; Olmstead, R. G. (2002). "Redefining Phrymaceae: the placement of Mimulus, tribe Mimuleae, and Phryma". American Journal of Botany. 89 (7): 1093–1102. doi:10.3732/ajb.89.7.1093. JSTOR 4122195.
  4. ↑ Beardsley, P. M.; Schoenig, Steve E.; Whittall, Justen B.; Olmstead, Richard G. (2004). "Patterns of Evolution in Western North American Mimulus (Phrymaceae)". American Journal of Botany. 91 (3): 474–4890. doi:10.3732/ajb.91.3.474. JSTOR 4123743.
  5. 1 2 Meinke, R. J. (1995). Assessment of the genus Mimulus (Scrophulariaceae) within the interior Columbia River Basin of Oregon and Washington. Eastside Ecosystem Management Project.
  6. ↑ California Native Plant Society Rare Plant Profile


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