Galium californicum subsp. primum
Alvin meadow bedstraw, Alvin Meadow Bedstraw
Photo: parent species Galium californicum · no rights reserved, uploaded by Alex Heyman · CC0
Family: Rubiaceae · Type: Subshrub · Native
Conservation status: CNPS 1B.2
Galium californicum subsp. primum (Alvin meadow bedstraw) is a native California subshrub in the Rubiaceae family, recognized by pine forest habitat, weak tufted habit, and sparse fine hairs.
Alvin meadow bedstraw is a rare (CNPS 1B.2) California native perennial found in southern California coastal and San Jacinto Mountain regions in Jeffrey and Coulter pine forest understory at elevations of 1,350 to 1,700 meters. Flowering from March to July, this plant produces small white flowers in delicate clusters across its low, sprawling stems. Growing weakly to 29 centimeters tall, it forms a tufted or slightly decumbent habit with fine, sparse hairs along its slender branches. Its leaves are small and elliptic, measuring 4 to 12 millimeters long with acute to obtuse tips, arranged in whorled patterns along the stems. The fruit is nearly glabrous to minutely hairy, contributing to its subtle woodland character.
Identification and appearance
Key characters: 19 sympatric species; key features are pine forest habitat, weak tufted habit, and sparse fine hairs
Habitat and range
Habitat: Shade, lower elevations in Jeffrey-, Coulter-pine forests
Elevation: 1350-1700 m
California counties: Riverside, San Bernardino
Bloom period
Galium californicum subsp. primum blooms Mar-Jul.
Conservation status
CNPS 1B.2
How to tell it apart
vs Eriogonum: Galium has whorled leaves and tiny flowers; Eriogonum has alternate/basal leaves and dense flower clusters with papery bracts.; vs Sherardia: Galium flowers have stalks and no sepals; Sherardia flowers lack stalks and have six prominent sepals.; vs Baccharis: Galium has whorled leaves and tiny four-petaled flowers; Baccharis has alternate leaves and composite flower heads.; vs Lupinus: Galium has whorled narrow leaves and tiny rotate flowers; Lupinus has palmate compound leaves and pea-like flowers.; vs Euphorbia: Galium has whorled leaves and four-petaled flowers; Euphorbia has alternate leaves and milky sap with specialized flower cups.
Frequently asked questions
Is Galium californicum subsp. primum native to California?
Yes. Galium californicum subsp. primum is native to California (recorded as native).
When does Galium californicum subsp. primum bloom?
Galium californicum subsp. primum blooms Mar-Jul.
Where in California does Galium californicum subsp. primum grow?
Galium californicum subsp. primum occurs in Riverside, San Bernardino, at elevations of 1350-1700 m.
What plant family does Galium californicum subsp. primum belong to?
Galium californicum subsp. primum is in the Rubiaceae family, genus Galium.
Is Galium californicum subsp. primum rare or endangered?
Galium californicum subsp. primum carries California Rare Plant Rank 1B.2, state rank S2.
Related species
Other California species in the same genus, family, or bioregion.
- Galium californicum subsp. sierrae — El dorado bedstraw
- Galium catalinense — Santa Catalina Island bedstraw
- Galium catalinense subsp. acrispum — San clemente island bedstraw
- Galium catalinense subsp. catalinense — Santa catalina island bedstraw
- Galium clementis — Santa lucia bedstraw
- Galium cliftonsmithii — Santa barbara bedstraw
Sources: Jepson eFlora · CNPS Rare Plant Inventory · Index of California Plant Names · 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.