Centromadia parryi subsp. australis
Southern tarplant, Southern Tarplant
Photo: parent species Centromadia parryi · no rights reserved · CC0
Family: Asteraceae · Type: Herb · Native
Conservation status: CNPS 1B.1
Centromadia parryi subsp. australis (Southern tarplant) is a native California herb in the Asteraceae family, recognized by habitat, glandular hairs, anther color, and palea markings.
Southern tarplant is a rare (CNPS 1B.1) California native perennial found in southern California coastal regions in salt marshes, grassland, vernal pools, and coastal scrub at elevations below 200 meters. Flowering from June to October, this plant produces yellow flowers with distinctive ray flowers 2 to 4 millimeters long and disk flowers with red to dark purple anthers. Growing to 30 to 60 centimeters tall with softly hairy stems that are coarsely stalked-glandular with yellow glands, it has a robust and somewhat sprawling habit. Its leaves are softly to coarsely hairy, with stalked glandular surfaces that give the plant a distinctively textured appearance. The flower heads have paleae with two purple lines along the inner edges of their scarious margins, adding to the plant's unique botanical character.
Identification and appearance
Key characters: 4 sympatric species; key features are habitat, glandular hairs, anther color, and palea markings
Habitat and range
Habitat: Salt marshes, grassland, vernal pools, coastal scrub
Elevation: < 200 m
Outside California: northwestern Baja California
Bloom period
Centromadia parryi subsp. australis blooms Jun-Oct.
Conservation status
CNPS 1B.1
Frequently asked questions
Is Centromadia parryi subsp. australis native to California?
Yes. Centromadia parryi subsp. australis is native to California (recorded as native).
When does Centromadia parryi subsp. australis bloom?
Centromadia parryi subsp. australis blooms Jun-Oct.
What plant family does Centromadia parryi subsp. australis belong to?
Centromadia parryi subsp. australis is in the Asteraceae family, genus Centromadia.
Is Centromadia parryi subsp. australis rare or endangered?
Centromadia parryi subsp. australis carries California Rare Plant Rank 1B.1, state rank S2.
What habitat does Centromadia parryi subsp. australis grow in?
Centromadia parryi subsp. australis grows in Salt marshes, grassland, vernal pools, coastal scrub.
Related species
Other California species in the same genus, family, or bioregion.
- Centromadia parryi subsp. congdonii — Congdon's tarplant
- Centromadia parryi subsp. parryi — Pappose tarplant
- Centromadia parryi subsp. rudis — Parry's rough tarplant
- Centromadia pungens — Common spikeweed
- Centromadia pungens subsp. laevis — Smooth tarplant
- Centromadia pungens subsp. pungens — Common spikeweed
Sources: Jepson eFlora · CalPhotos · CDFW CNDDB
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.