Key to Downingia

View taxon page for Downingia

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

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

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

lobes 

1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth.

± 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 

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

, mucronate ..... D. bacigalupii

3' Corolla 2-colored (blue, white); lower corolla lobes 

acute 

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

..... 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. mirabilis

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 

Opening at maturity to release contents; usually pertaining to anthers or fruits.

, 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 

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

, ± 

tapered 

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

, pointed at tip ..... D. pulchella

13' Anthers 

included 

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

to ± exserted, blunt at tip

14. Ovary chambers 2; 

placentas 

Structure or area to which ovules are attached in an ovary; variously shaped and positioned.

 

axile 

Pertaining to an axis, as of a placenta along the central axis in a compound ovary with more than one chamber.

; GV, SCo, n WTR ..... D. bella

14' Ovary chambers 1; placentas 

parietal 

Pertaining to placentas on the inside surface of the ovary wall in a compound ovary with one or more chambers.

; CaR, SN

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 KR, CaR ..... D. pulcherrima

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

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