Navarretia ojaiensis
Elvin, J.M. Porter & L.A. Johnson
G2ImperiledGlobal Rank
HighThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.816613
Element CodePDPLM0C130
Record TypeSPECIES
ClassificationSpecies
Classification StatusProvisional
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderSolanales
FamilyPolemoniaceae
GenusNavarretia
Concept ReferenceJohnson, L. A. 2007. Two new species and a reassessment of synonymy in the Navarretia pubescens complex (Polemoniaceae) of western North America. Novon 17: 454-461.
Taxonomic CommentsNewly described in 2007, this species differs from N. mitracarpa in flower coloration and in its acuminate corolla lobes. It differs from (the also newly described) N. gowenii in its spreading rather than upright habit, its acuminate-cuspidate corolla lobes (rather than rounded-acute), long exerted stamens and exserted style, a longer apical nipple on the fruit, in the proportionally shorter fusion of the calyx segments, and in the distance from the base that the three primary corolla lobe veins gradually diverge (greater than 1 mm), rather than the relatively abrupt divergence at or near (less than 0.5 mm) the base of N. gowenii.
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2016-10-24
Change Date2016-10-24
Edition Date2016-10-24
Edition AuthorsGravuer, K., rev. R. Bittman (2016)
Threat ImpactHigh
Range Extent1000-5000 square km (about 400-2000 square miles)
Number of Occurrences6 - 20
Rank ReasonsEndemic to California in the Western Transverse Ranges. Known from the Ojai Valley, Santa Clarita Valley, and Santa Susana Mountains of Ventura County and the Santa Monica Mountains of Los Angeles County. Development threatens nearly all known populations and may have already extirpated some populations in the Ojai Valley. All populations in this area are threated by grazing.
Range Extent CommentsEndemic to California in Ojai Valley, Santa Clarita Valley, and Santa Susana Mountains of Ventura County, and Santa Monica Mountains, Los Angeles County.
Occurrences Comments22 total occurrences, but 2 are confirmed extirpated (CNDDB 2016).
Threat Impact CommentsThreats include development, brush clearing, and roads (CNDDB 2016). All sites in this region continue to be threatened by grazing.
Ecology & Habitat
Habitat
Dry, clay soils of native perennial grasslands in openings of chaparral.
Terrestrial HabitatsShrubland/chaparralGrassland/herbaceous
Other Nations (1)
United StatesN2
| Province | Rank | Native |
|---|
| California | S2 | Yes |
Roadless Areas (2)
California (2)
| Area | Forest | Acres |
|---|
| Dry Lakes | Los Padres National Forest | 17,043 |
| Matilija | Los Padres National Forest | 5,218 |
References (2)
- California Natural Diversity Database (CNDDB). 2016. RareFind Version 5.1.1. California Department of Fish and Game, Sacramento.
- Johnson, L. A. 2007. Two new species and a reassessment of synonymy in the <i>Navarretia pubescens</i> complex (Polemoniaceae) of western North America. Novon 17: 454-461.