Jepson eFlora
Key to families | Table of families and genera

Key to Hackelia

View taxon page for Hackelia

1. Corolla pink or white

2. Corolla pink, when dry ± blue, appendages pink ..... H. mundula

2' Corolla white, when dry ± brown, appendages white

3. Nutlet 5–6 mm, abaxial prickles ± 10, << marginal prickles; calyx 3.5–5.5 mm; corolla limb 12–19 mm diam, appendages longer than wide; anthers at base of tube ..... H. bella

3' Nutlet 4–4.5 mm, abaxial prickles 10–25, ± = marginal prickles; calyx 1.5–3 mm; corolla limb (5)7–14 mm diam, appendages ± as long as wide; anthers ± at top of tube ..... H. californica

1' Corolla generally ± blue, occasionally ± purple (pink), occasionally white with blue margins

4. Nutlet abaxial prickles many, ± as numerous as marginal; corolla tube > to >> calyx

5. Corolla appendages generally as long as wide, included, indented at tip, not closing throat, not hiding anthers; leaves sparse-rough-hairy ..... H. nervosa

5' Corolla appendages much longer than wide, exserted, 2-pronged at tip, ± closing throat, ± hiding anthers; leaves velvety-hairy ..... H. velutina

4' Nutlet abaxial prickles 0 or fewer than marginal; corolla tube <= calyx

6. Cymes (1)2–3 per inflorescence, ± terminal — s High Sierra Nevada ..... H. sharsmithii

6' Cymes generally > 3 per inflorescence, terminal and axillary

7. Hairs at mid-stem generally ± appressed

8. Nutlets 2–3 mm, abaxial prickles 0–7; calyx 1–2 mm; leaves ± soft velvety-hairy; White and Inyo Mountains ..... H. brevicula

8' Nutlets 3–4.5 mm, abaxial prickles 8–15; calyx 4–5 mm; leaves appressed-stiff-hairy; Modoc Plateau ..... H. cusickii

7' Hairs at mid-stem generally ± spreading

9. Stem 1(few) from non-woody caudex; nutlet abaxial prickles 0(3); inflorescence narrow ..... H. floribunda

9' Stem generally many from ± woody caudex; nutlet abaxial prickles generally > 3; inflorescence ± wide

10. Hairs of lower leaves spreading, bristly, generally >> 1 mm, especially on margins; basal leaves generally < 22 cm, generally < 2.5 cm wide ..... H. setosa

10' Hairs of lower leaves ± appressed, soft or strigose to rough, generally < 1 mm, occasionally > 1 mm on margins; basal leaves often > 22 cm, often > 2.5 cm wide

11. Mid cauline leaf base truncate to cordate, ± clasping; stem hairs ± dense, generally < 1 mm; nutlet abaxial prickles generally 10–17; corolla limb 7–12+ mm diam ..... H. amethystina

11' Mid cauline leaf base tapered to obtuse, not ± clasping; stem hairs generally 0 to ± sparse, often > 1 mm; nutlet abaxial prickles generally 4–10; corolla limb (4)5–8(11) mm diam ..... H. micrantha

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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].
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