Jepson eFlora
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 acute

3. Stolons 0 ..... A. dimorpha

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 tomentose; 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 elliptic, green adaxially; inflorescence raceme- or panicle-like; peduncles 10–30 mm; inflorescence finely glandular ..... A. racemosa

9' Rosette leaves linear 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; Klamath Ranges ..... A. howellii subsp. howellii

11' Rosette leaves <= 6 mm wide, 1-veined; cauline leaves 7–16 mm; inflorescence generally glandular; San Bernardino Mountains ..... 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 leaf 11–20 mm; herbage generally not glandular; pistillate flower corolla 3–4.5 mm in fruit; staminate 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, ascending; phyllaries pale yellow to pale brown distally, narrow and acute (pistillate) or wide and blunt (staminate); staminate plants present – n High Sierra Nevada, White and Inyo Mountains ..... A. umbrinella

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

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

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


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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