Jepson eFlora
Key to families | Table of families and genera

Key to Downingia

View taxon page for Downingia

1. Anthers abruptly bent, > 70° to filaments; lower corolla lip lobes ± parallel

2. Corolla with 1 purple band or 3 distinct spots near throat; ovary chambers 2 ..... D. insignis

2' Corolla without purple near throat, or, if present, diffuse; ovary chambers 1

3. Corolla 3-colored (blue, white, yellow); lower corolla lobes obtuse, mucronate ..... D. bacigalupii

3' Corolla 2-colored (blue, white); lower corolla lobes acute ..... D. elegans

1' Anthers not or ± bent, < 45° to filaments; lower corolla lip lobes divergent, not parallel

4. Corolla <= 7 mm; flower not inverting, upper corolla lip 3-lobed

5. Corolla 4–7 mm, with blue or purple spots or band near throat; seeds with longitudinal lines ..... D. laeta

5' Corolla 2.5–4 mm, without blue or purple spots near throat; seeds with spiral lines, appearing twisted ..... D. pusilla

4' Corolla generally >= 7 mm; flower inverting, upper corolla lip 2-lobed

6. Sinus between 2 upper corolla lobes with a backward-projecting horn ..... D. ornatissima

7. Upper corolla lobes densely hairy adaxially near tips ..... var. eximia

7' Upper corolla lobes glabrous or sparsely hairy adaxially near tips ..... var. ornatissima

6' Sinus between 2 upper corolla lobes without a horn

8. 2 largest bristles at tips of lower anthers twisted together (or not or 0) ..... D. bicornuta

9. 2 largest bristles at tips of lower anthers generally >= anthers; corolla tube light blue to pale yellow, with prominent blue veins adaxially ..... var. picta

9' 2 largest bristles at tips of lower anthers < anthers; corolla tube blue, without prominent veins adaxially ..... var. bicornuta

8' 2 largest bristles at tips of lower anthers not twisted

10. Corolla without purple near throat; seeds with spiral lines, appearing twisted ..... D. cuspidata

10' Corolla with 1 purple, ± square spot or 2–3 purple, non-square spots or 1 purple band near throat; seeds with longitudinal lines

11. Corolla with 1 purple, ± square spot (2-lobed or not) near throat; upper corolla lobes ciliate-scabrous ..... D. concolor

12. Mature fruit generally 12–30 mm, readily dehiscent, lines translucent ..... var. brevior

12' Mature fruit (25)30–50 mm, tardily dehiscent, lines not translucent ..... var. concolor

11' Corolla with 2–3 purple, non-square spots or 1 purple band near throat; upper corolla lobes glabrous

13. Anthers exserted, ± tapered, pointed at tip ..... D. pulchella

13' Anthers included to ± exserted, blunt at tip

14. Ovary chambers 2; placentas axile; Great Central Valley, South Coast, n Western Transverse Ranges ..... D. bella

14' Ovary chambers 1; placentas parietal; Cascade Range, Sierra Nevada

15. Upper 3 anthers densely hairy at tips; upper 3 sepals >> lower 2 ..... D. montana

15' Upper 3 anthers glabrous or ± hairy at tips; upper 3 sepals ± > lower 2

16. Plants at 500–1550 m in Klamath Ranges, Cascade Range ..... D. pulcherrima

16' Plants at generally < 200 m in Northwestern California (650 m, Lake Co.) ..... D. willamettensis

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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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