Key to Hackelia

View taxon page for Hackelia

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

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

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 

Not protruding out of surrounding structure(s) (e.g., stamens included in corolla).

, indented at tip, not closing throat, not hiding anthers; leaves sparse-rough-hairy ..... H. nervosa

5' Corolla appendages much longer than wide, 

exserted 

Protruding out of surrounding structure(s) (e.g., stamens exserted from corolla).

, 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 SNH ..... H. sharsmithii

6' Cymes generally > 3 per inflorescence, terminal and 

axillary 

Pertaining to or within an axil, especially a leaf axil.

7. Hairs at mid-stem generally ± 

appressed 

Parallel or nearly parallel to and often in contact with surface of origin; used to describe the disposition of hairs, leaves, pedicels, etc.

8. Nutlets 2–3 mm, abaxial prickles 0–7; calyx 1–2 mm; leaves ± soft velvety-hairy; W&I ..... H. brevicula

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

7' Hairs at mid-stem generally ± 

spreading 

Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal.

9. Stem 1(few) from non-woody 

caudex 

Generally short, sometimes woody, more or less vertical stem of a perennial, at or beneath ground level.

; 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 

At or near the base of a plant or plant part. Especially said of leaves clustered near the ground or of a placenta confined to the base of an ovary.

leaves generally < 22 cm, generally < 2.5 cm wide ..... H. setosa

10' Hairs of lower leaves ± appressed, soft or 

strigose 

With stiff, straight, sharp, appressed hairs.

to rough, generally < 1 mm, occasionally > 1 mm on margins; basal leaves often > 22 cm, often > 2.5 cm wide

11. Mid cauline 

leaf 

Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).

base 

truncate 

Abruptly (not gradually) narrower or smaller at base or tip, as if cut straight across or nearly so.

to 

cordate 

Heart-shaped; often pertaining to a leaf in which the blade base on both sides of the petiole is rounded and convex.

, ± 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 

Gradually (not abruptly) narrower or smaller at base or tip.

to 

obtuse 

Having a short-tapered, blunt tip or base, the sides convex or straight and converging at more than a right angle.

, 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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