Key to Eriodictyon

View taxon page for Eriodictyon

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

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

1. Plant low 

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 or subshrub, stems woody at base or not

2. Plant subshrub, stem 

erect 

Upright; vertically oriented.

, 1–3 m ..... E. parryi

2' Plant perennial herb, stem 

prostrate 

Lying flat on the ground.

to 

ascending 

Curving or angling upward from base, or about 30-60 degrees less than vertical or away from axis of attachment.

, 0.16–0.5 m ..... E. lobbii

1' Plant shrub, stems woody

3. Calyx stalked-glandular abaxially; corolla 

urn-shaped 

Widening more or less abruptly at the base and then gradually or abruptly narrowed toward the tip.

or 

funnel-shaped 

Widening from the base more or less gradually through the throat into an ascending, spreading, or recurved limb; often applied to a fused calyx or corolla.

4. Stems, 

peduncle 

Stalk of an individual flower borne singly, not in an inflorescence, or of an entire inflorescence, or the corresponding structure in fruit; the stalk subtending an involucre (e.g., in Asteraceae, Polygonaceae).

, 

pedicel 

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

and abaxial 

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).

 veins stalked-glandular; corolla funnel-shaped, 12–15 mm, dense-hairy, not stalked-glandular ..... E. sessilifolium

4' Stems, peduncle, pedicel and abaxial leaf veins not stalked-glandular; corolla urn-shaped, <= 10 mm, sparse- to dense-hairy, stalked-glandular

5. Calyx 

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.

2.5–4 mm, dense-long-hairy, stalked glands fewer than hairs; corolla 3–5 mm, tube exceeding calyx by < 2 mm ..... E. tomentosum

5' Calyx lobes 4–5 mm, moderate-hairy, stalked glands as many as hairs; corolla 6–10 mm, tube exceeding calyx by > 2 mm ..... E. traskiae

6. Petiole 10–20 mm; leaf 

blade 

Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.

 

elliptic 

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

, 1.5–4 cm wide; corolla 7–10 mm ..... subsp. smithii

6' Petiole 2–5 mm; leaf blade narrow-elliptic, 1–1.5 cm wide; corolla 6–7 mm ..... subsp. traskiae

3' Calyx not stalked-glandular; corolla funnel-shaped

7. Leaf 

linear 

Elongate, with nearly parallel sides; narrower than elliptic or oblong.

to lance-linear, 0.2–1.1 cm wide

8. Inflorescence head-like; calyx lobes 6–8 mm, dense-long-hairy ..... E. capitatum

8' Inflorescence open, branched; calyx lobes 2–5 mm, glabrous to sparse-hairy

9. Leaf abaxially with all but midvein obscured by hairs; peduncle, pedicel glabrous, sticky; calyx lobes 3–5 mm, abaxially glabrous, sticky; corolla 11–16 mm, lavender ..... E. altissimum

9' Leaf abaxially with all but midvein not obscured by hairs; peduncle, pedicel sparse-stiff-hairy, not sticky; calyx lobes 2–3 mm, abaxially sparse-stiff-hairy, not sticky; corolla 3–7 mm, white ..... E. angustifolium

7' Leaf 

lanceolate 

Narrowly elongate, widest in the basal half, often tapered to an acute tip.

to 

oblong 

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

or 

ovate 

Egg-shaped (i.e., widest below the middle) in two dimensions (i.e., in one plane), as a leaf.

, 1–5 cm wide

10. Leaf adaxially sparse-hairy to dense-tomentose ..... E. crassifolium

11. Leaf adaxially dense-gray- to -white-tomentose; leaf ± ovate, not sticky; corolla 8–16 mm ..... var. crassifolium

11' Leaf adaxially dull ± green, sparse- to moderate-short-hairy; leaf lanceolate, sticky between hairs; corolla 6–10 mm ..... var. nigrescens

10' Leaf adaxially glabrous to sparse-long-wavy-hairy

12. Calyx abaxially glabrous to sparse-hairy, adaxially short-stiff-hairy; corolla 8–12(17) mm, abaxially sparse-hairy; flower 

buds 

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

appearing dark, not gray-hairy ..... E. californicum

12' Calyx dense-long-hairy; corolla 6–8 mm, abaxially dense-long-hairy; flower buds appearing gray-hairy ..... E. trichocalyx

13. Stem sparse- to dense-long-wavy-hairy; leaf adaxially sparse-long-wavy-hairy, abaxially dense-white-tomentose, all but midvein, secondary veins obscured ..... var. lanatum

13' Stem glabrous to sparse-short-hairy; leaf adaxially ± glabrous, sparse-short-hairy mostly on midvein, abaxially sparse-tomentose between yellow-green, glabrous veins in net-like pattern ..... var. trichocalyx

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