Key to Dieteria
View taxon page for Dieteria
(For a list of species in Dieteria, use the above link.)
Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.
2. Phyllary tips
acute 
Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle.
to long-acuminate, 1–6 mm;
phyllaries generally hairy and/or
glandular throughout
..... D. asteroides 3. Involucre hemispheric;
phyllary tips long-acuminate, 3–6 mm;
leaves of mid-stem
serrate 
Having margins with sharp, fine to coarse teeth generally pointing tipward, not outward; margins with such teeth on such primary teeth are doubly serrate.
or minutely serrate
..... var. asteroides 3' Involucre widely obconic to ± hemispheric; phyllary tips acute to short-acuminate, 1–3 mm; leaves of mid-stem
entire 
Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.).
or nearly so
..... var. lagunensis 2' Phyllary tips acute to short-acuminate, 1–3 mm; phyllaries generally hairy and/or glandular only on green tips
..... D. canescens 4. Heads generally 14–20 mm;
subshrub or long-lived
perennial 
Completing life cycle (germination through death) in more than two years or growing seasons, generally non-woody (at least above ground) to woody; includes perennial herbs as well as subshrubs to trees; the abbreviation 'per' only refers to perennial herb, not to the word 'perennial' alone.
herb; e PR (Santa Rosa Mtns)
..... var. ziegleri 4' Heads generally 6–12 mm;
annual to short-lived perennial herb; widespread
5' Stems canescent-puberulent, stalked glands sparse or lacking
6. Stems stiffly
erect 
Upright; vertically oriented.
, <= 60 cm; branches many, stiff,
spreading 
Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal.
;
heads many
..... var. incana 6' Stems various, generally smaller; branches generally fewer, more flexible, loosely spreading to
ascending 
Curving or angling upward from base, or about 30-60 degrees less than vertical or away from axis of attachment.
; heads few to many
7. Ray flowers with
styles,
fertile, well developed;
involucre 
Group of bracts more or less held together as a unit, subtending a flower, fruit (acorn cup), or inflorescence.
generally 8–12 mm; phyllaries generally in 5–10
series ..... var. canescens 7' Ray flowers without styles,
sterile, often ±
reduced; involucre 6–9 mm; phyllaries generally in 3–5 series
..... var. shastensis (2)
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