Jepson eFlora
Key to families | Table of families and genera

Key to Antennaria

View taxon page for Antennaria

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

Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.