Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Antennaria

View taxon page for Antennaria

(For a list of species in Antennaria, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Heads 1 per flower stem

2. Stem 5–12 cm; leaves thick, green adaxially, tips notched ..... A. suffrutescens

2' Stem < 4 cm; leaves thin, gray-tomentose adaxially, tips 

3' Stolons long, slender, ± leafless ..... A. flagellaris

1' Heads 2–many per flower stem

4. Stolons 0, plants not forming mats, sometimes forming clumps via rhizomes

5. Involucre proximally densely phyllary tips generally pink to red or light to dark brown, occasionally olive-green

6. Rosette leaves absent; phyllary tips generally pink to red..... A. geyeri

6' Rosette leaves present; phyllary tips light to dark brown, occasionally olive-green ..... A. sawyeri

5' Involucre ± glabrous

7. Proximal leaves 7–20 mm wide; stem 18–40 cm; phyllaries white or cream, unequal ..... A. argentea

7' Proximal leaves 1–10 mm wide; stems 7–25 cm; phyllaries straw-colored or pale, ± equal ..... A. luzuloides

8. Heads 10–30 in raceme- or panicle-like cluster ..... subsp. aberrans

8' Heads 10–110 in ± flat-topped, cyme-like cluster ..... subsp. luzuloides

4' Stolons present, plants forming mats

9. Rosette leaves , green adaxially; inflorescence raceme- or panicle-like;  10–30 mm; inflorescence finely glandular ..... A. racemosa

9' Rosette leaves  or oblanceolate to spoon- or wedge-shaped; inflorescence cyme-like; peduncles < 5 mm; inflorescence glandular or not

10. Rosette leaves green or lightly tomentose adaxially, 1–3-veined

11. Rosette leaves > 6 mm wide, 1–3-veined; cauline leaves 20–40 mm; inflorescence not glandular; KR ..... A. howellii subsp. howellii

11' Rosette leaves <= 6 mm wide, 1-veined; cauline leaves 7–16 mm; inflorescence generally glandular; SnBr ..... A. marginata

10' Rosette leaves gray- to silvery-tomentose adaxially, 1-veined

12. Phyllaries dark brown to black; stem 3–13 cm

13. Most proximal cauline  11–20 mm; herbage generally not glandular; pistillate flower corolla 3–4.5 mm in fruitstaminate corolla generally 2.8–4.5 mm in flower ..... A. media

13' Most proximal cauline leaf <= 11 mm; herbage generally glandular; pistillate corolla 2–3 mm in fruit; staminate corolla generally <= 2.8 mm in flower ..... A. pulchella

12' Phyllaries white to pale yellow, rose or pale brown; stem 6–40 cm

14. Phyllaries white-tipped with a prominent ± black-brown spot near base of scarious part ..... A. corymbosa

14' Phyllaries white or white-tipped, rose, straw-colored or (paler) brown, not dark-spotted near base

15. Stem distally stalked-glandular ..... A. microphylla

15' Stem not glandular

16. Stolons slightly woody; phyllaries pale yellow to pale brown distally, narrow and acute (pistillate) or wide and blunt (staminate); staminate plants present – n SNH, W&I ..... A. umbrinella

16' Stolons not woody, horizontal to ascending; phyllaries various colors, tips acute; staminate plants ± 0 ..... A. rosea

17. Longest leaf of flower  8–20 mm; phyllaries often brown ..... subsp. confinis

17' Longest leaf of flower rosettes 20–40 mm; phyllaries generally not brown ..... subsp. rosea


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