Key to Eschscholzia

View taxon page for Eschscholzia

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

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

1. Outer receptacle rim 0.5–5 mm ..... E. californica

1' Outer receptacle rim 0–0.3 mm

2. Leaves 

basal 

At or near the base of a plant or plant part. Especially said of leaves clustered near the ground or of a placenta confined to the base of an ovary.

3. Flower 

bud 

1. An incompletely developed, more or less embryonic shoot, usually covered with bud scales. 2. An unopened flower, often protected by sepals.

generally nodding; 

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).

3 × ternate-divided, segments many, short-linear, condensed at end of long 

petiole 

Leaf stalk, connecting leaf blade to stem; sometimes more or less indistinct.

, so leaf broom-like; petals (10)12–25 mm; seed minutely pitted, tan to ashy-gray; D ..... E. glyptosperma

3' Flower bud 

erect 

Upright; vertically oriented.

; leaf 2 × ternate-divided, segments fewer than many, long-linear, sparsely distributed along leaf, so leaf not broom-like; petals 7–12 mm; seed prominent-discontinuous-ridged, brown; SNF, GV ..... E. lobbii

2' Leaves basal and cauline

4. Receptacle 

tapered 

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

at base, but with parallel sides distally

5. Peduncle = basal leaves; petals yellow, 3–15 mm ..... E. rhombipetala

5' Peduncle 2 × basal leaves; petals orange or deep yellow, 15–40 mm ..... E. lemmonii

6. Bud generally erect, glabrous ..... subsp. kernensis

6' Bud nodding, generally hairy ..... subsp. lemmonii

4' Receptacle obconic

7. Flower bud generally hairy, nodding; petiole generally hairy ..... E. hypecoides

7' Flower bud glabrous, nodding or erect; petiole generally glabrous

8. Flower bud generally nodding; SNE, D

9. Leaf segments widened to tip, short, tip generally 

obtuse 

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

, notched; leaves gray- or blue-green; seeds generally 

oblong 

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

to 

elliptic 

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

..... E. minutiflora

9' Leaf segments not widened to tip, short or not, tip 

acute 

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

, ± notched or not; leaves bright- or yellow-green; seeds generally round ..... E. parishii

8' Flower bud generally erect; not SNE, D

10. Flower bud long-pointed, tip generally > 1/4 bud; plant denser below than above; mainland ..... E. caespitosa

10' Flower bud blunt or short-pointed, tip < 1/4 bud; plant denser above than below; ChI ..... E. ramosa

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