Santa Monica Mountains National Recreation Area

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All glu Eri den Eri fil Eri sap Gil ach Gil ang Gil cap Gil cli Gil lep Gil spl Lep cal Lep cil Lep lin Lep par Lep pyg Lin cal Lin cil Lin dia Lin lin Lin par Lin pyg Mic gra Nav ham Nav ham Nav jar Navarretia leptalea Nav mel Nav mit Nav oja Nav pub Phl gra Sal spl  <


Bridges' Pincushionplant
Navarretia leptalea

TJM1: Gilia leptalea.

Family: Polemoniaceae (PHLOX).
Other common names: Bridges' gilia.
Generic common name: PINCUSHIONPLANT.

Location: Triunfo Creek Park: Amid scree of north-facing rocky slope above Triunfo Cyn Rd, March 2010.

Characteristics: Native, White, Red, Medium, Solitary, Simple, Herbaceous, Annual, Early Spring.

Tentative ID
The use of the Jepson identification keys on this plant is not straight-forward and consequently there are a number of issues with this ID, even at the level of Genus. Making matters more difficult this plant cannot be found every year and therefore has not been seen frequently. The pictures shown here are from two small populations located about 700 yards apart in Triunfo Creek Park, both in full sun on thin rocky soils of north-facing slopes. The pictures from population 1, located near Triunfo Canyon Road, were photographed between mid-March and mid-April of 2010. Population 2, located below the east security fence of the Las Virgenes Reservoir, were photographed in early April of 2019. It is worth noting that the 2019 plants would have been influenced by nutrients released by the November 2018 Woolsey fire, and indeed, we saw other species in the vicinity that were quite large and robust compared to more typical years.

From the note in A N F under the genus Gilia regarding population 1:

NB. There is considerable variation in gilias within range, from site to site and between good and poor rain years, so it is still unclear how many species and subspecies should be listed. For example, in 2010 a population was discovered by SMMNRA staff growing in full sun on a rocky slope along Triumfo Canyon Road in Westlake Village (SMM), occurring with many other native herbs on very thin soil. It has 3-seeded capsules and resembles Gilia but could also be a non-spinescent species of Navarretia, e.g., N. leptalea (A. Gray) L. A. Johnson; unfortunately, the plant has not appeared in subsequent dry years, and needs to be studied more carefully. This unidentified polemon has dark lavender to pink corolla lobes, light violet filaments ca. 0.8 mm long having light blue anthers, and an included pistil with the stigmas positioned several millimeters below the anthers.

And in A N F under Navarretia:

NB. Populations of Navarretia throughout the range need much more study to sort out identifications and degree of variability. Problems to studying this group include the oddity that this group blooms during the dry season, when botanist tend not to be out collecting plants in southern California. Populations are also small and widely dispersed, and are undependable as to in what year they will germinate. Materials from range until now have not received much notice, whereas our populations may provide insight into how broadly species should be defined.
.

Thumbnail Picture of Bridges' Pincushionplant




Detailed Picture 1 of Navarretia leptalea
Population 1, March



Detailed Picture 2 of Navarretia leptalea
Population 1, April



Detailed Picture 3 of Navarretia leptalea
Population 2



Detailed Picture 4 of Navarretia leptalea
Population 2: most plants have lavender flowers, but a few plants have white flowers.



Detailed Picture 5 of Navarretia leptalea
Population 1, March



Detailed Picture 6 of Navarretia leptalea
Population 1, April



Detailed Picture 7 of Navarretia leptalea
Population 1, April



Detailed Picture 8 of Navarretia leptalea
Population 2



Detailed Picture 9 of Navarretia leptalea
Population 2



Detailed Picture 10 of Navarretia leptalea
Population 2



Detailed Picture 11 of Navarretia leptalea
Population 1, March



Detailed Picture 12 of Navarretia leptalea
Population 1, April



Detailed Picture 13 of Navarretia leptalea
Population 1, April



Detailed Picture 14 of Navarretia leptalea
Population 2



Detailed Picture 15 of Navarretia leptalea
Population 1, March



Detailed Picture 16 of Navarretia leptalea
Population 1, March



Detailed Picture 17 of Navarretia leptalea
Population 1, April



Detailed Picture 18 of Navarretia leptalea
Population 2



Detailed Picture 19 of Navarretia leptalea
Population 2



Detailed Picture 20 of Navarretia leptalea
Population 2: mostly lavender with a few white individuals mixed in



Detailed Picture 21 of Navarretia leptalea
Population 1. Several of the small, slender plants are in the field of view of this photo, but difficult to discern at this scale



Detailed Picture 22 of Navarretia leptalea
Population 2. Many of the small, slender plants are in the field of view of this photo, but difficult to discern at this scale





Description Not Available


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