Heterotheca oregona var. rudis

Rarity

CNPS-EB: A1

Observations

Background

Regions with a green background have at least one population that has been observed in the past 25 years.

Regions with a blue background have no populations that have been observed in the past 25 years, but have at least one population that has been recorded more than 25 years ago.

Regions with an orange background have no confirmed observations of natural occurrences of this species, but have at least one observation of a population whose location or identification is uncertain, or which has been planted.

Regions with a white background have no record of this species every being present.

Key

Ecology

Flowers July - October

Habitats:

Dry Wash
Riparian

All Heterotheca

H. oregona var. rudis
H. oregona var. scaberrima (A1)
H. sessiliflora subsp. bolanderi (C)
H. sessiliflora var. bolanderioides (A1x)

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Sunol Rgnl Wilderness	1	2023-09-24
Sunol Rgnl Wilderness	2	2021-07-29
Sunol Rgnl Wilderness	3	2021-08-22
Sunol Rgnl Wilderness	4	2025-08-16	ID Uncertain

The list of populations shows the distinct populations identified by the CNPS-EB Rare and Unusual Plants Committee. The locations in this list are very general. More specific location details can be obtained from the links in the Observations section (for some of these links, a login is required).

Font

Populations in bold type have precise coordinates available for field volunteers and researchers.

Populations in normal type are only known from a description of the location; no precise coordinates are available.

Background

Populations with a white background have been observed in the last 25 years.

Populations with a blue background have not been observed for at least 25 years.

Populations with an orange background have an uncertain location or identification, or are planted.

Columns

Pop ID is a label that identifies the population. Many locations have more than one population of a species, and the population ID is used to distinguish them.