Key to Hazardia

View taxon page for Hazardia

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

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

1. Perennial herb or subshrub from woody root-crown ..... H. whitneyi

2. Heads discoid; disk fruit <= 10 mm ..... var. discoidea

2' Heads radiate; disk fruit generally 5–8 mm ..... var. whitneyi

1' Shrub; stems arising from woody trunk

3. Heads discoid

4. Fruit 2–4 mm – DMoj ..... H. brickellioides (2)

4' Fruit 5–8 mm

5. Flowers 4–8; 

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).

15–25 mm, 7–12 mm wide; SCoR ..... H. stenolepis

5' Flowers 9–30; leaf 15–50 mm, 10–20 mm wide; s SnJV, SCoRO, SW, n Baja California ..... H. squarrosa

6. Herbage generally sparsely hairy, generally not resinous; 

involucre 

Group of bracts more or less held together as a unit, subtending a flower, fruit (acorn cup), or inflorescence.

8–12 mm; flowers 9–16, corolla 9–10 mm; pappus white to red-brown ..... var. grindelioides

6' Herbage glabrous to sparsely hairy, generally resinous; involucre 11–15 mm; flowers 18–30, corolla 10–11 mm; pappus tan

7. Stem glabrous to scabrous; phyllaries smooth, resinous, ± 

truncate 

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

to 

obtuse 

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

, abruptly pointed, ± 

erect 

Upright; vertically oriented.

..... var. obtusa

7' Stem sparsely hairy distally or becoming glabrous; phyllaries glandular, obtuse to 

acute 

Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle.

, 

recurved 

Gradually curved downward or backward.

..... var. squarrosa

3' Heads radiate (rays sometimes inconspicuous) or disciform

8. Ray generally exceeding disk corolla; leaf margin ± 

entire 

Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.).

..... H. orcuttii

8' Ray not exceeding disk corolla; leaf margin generally ± entire to toothed

9. Leaf soft-hairy to scabrous; plant 2–8 dm ..... H. brickellioides (2)

9' Leaf densely 

tomentose 

Covered with densely interwoven, generally matted hairs.

, at least abaxially; plant 6–25 dm

10. Leaf thin, becoming glabrous adaxially; outer phyllary tips loosely woolly-tufted; disk corolla 5–8 mm ..... H. cana

10' Leaf thick, ± densely tomentose adaxially; phyllary generally densely woolly throughout; disk corolla 8–10 mm ..... H. detonsa

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