Key to Tauschia

View taxon page for Tauschia

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

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

1. Peduncle generally < 

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).

; bractlets large, >> umbels, wide, sharply pinnately lobed, leaf-like ..... T. howellii

1' Peduncle > leaf; bractlets small, < to ± > umbels, narrow, ± 

entire 

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

, not leaf-like

2. Fruit 

oblong 

Longer than wide, with nearly parallel sides; wider than linear.

to narrowly 

elliptic 

In the shape of a flattened circle or ellipse; wider than linear

, ribs prominent, 

acute 

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

, ± wing-like; leaf ± leathery

3. Leaf 1-pinnate; rays unequal, spreading-ascending ..... T. arguta

3' Leaf 2-pinnate; rays ± equal, 

spreading 

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

, 

reflexed 

Abruptly bent or curved downward or backward.

..... T. parishii

2' Fruit ± round, ribs low, 

obtuse 

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

, thread-like; leaf not leathery

4. Plant glabrous, smooth; rays 5–12; 

pedicel 

Stalk of an individual flower in an inflorescence, or the corresponding structure in fruit.

1–3 mm ..... T. glauca

4' Plant minutely scabrous; rays 10–30; pedicel 2–15 mm

5. Generally several bractlets > flowers, fruits; fruit 4–7 mm, 4–5 mm wide ..... T. hartwegii

5' Generally all bractlets < flowers, fruits; fruit 3–5 mm, 4–6 mm wide ..... T. kelloggii

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