Jepson eFlora
Key to families | Table of families and genera

Key to Orobanchaceae

View taxon page for Orobanchaceae

1. Plant ± purple, brown, tan, or yellow-white, not green (holoparasites); leaves reduced to ± fleshy bracts; corolla upper lip entire or 2-lobed

2. Inflorescence glabrous; bracts widely and closely overlapping, inrolled at tip; tip of upper corolla lip incurved at maturity; capsule 3–4 valved ..... KOPSIOPSIS

2' Inflorescence hairy; bracts little or not overlapping, erect or recurved at tip; upper corolla lip straight to recurved at maturity; capsule 2-valved ..... OROBANCHE

1' Plant generally green at least in part (hemiparasites); leaves normally expanded; upper corolla lip fused into a beak or hood

3. Leaves opposite, at least distally on stem

4. Upper corolla lip pink, lower lip white; calyx lobes unequal; fruit generally wider than long ..... BELLARDIA

4' Corolla yellow or red-purple; calyx lobes ± equal; fruit longer than wide ..... PARENTUCELLIA

3' Leaves alternate or ± basal

5. Tip of upper 2 corolla lobes not rounded, open, opening directed forward, forming a beak

6. Annual to subshrub; anther sacs 2 per stamen; corolla throat not indented (except Castilleja campestris); seed coat generally loose-fitting ..... CASTILLEJA

6' Annual; anther sac 1 per stamen; corolla throat generally abruptly indented forming a fold proximal to lower lip; seed coat generally tight-fitting ..... TRIPHYSARIA

5' Tip of upper 2 corolla lobes rounded, closed, opening directed downward forming a hood enclosing anthers and style

7. Anther sacs 2 per stamen, equal; leaves toothed or generally > 7-lobed ..... PEDICULARIS

7' Anther sac 1 per stamen or 2, unequal; leaves entire or lobes 3–7(11)

8. Calyx unequally 4-lobed; bracts distinct from leaves or not; lower corolla lip generally 3-toothed; inflorescence a spike ..... ORTHOCARPUS

8' Calyx sheath-like, occasionally ± notched; bracts grading from leaf-like to calyx-like; lower corolla lip 3-lobed; inflorescence various

9. Leaves entire and linear, or palmately 3–7-lobed, segments narrow; inflorescence a short dense spike, < 2(5) cm, or flowers 1, scattered; fertile stamens (2)4; middle lobe of lower corolla lip tightly rolled under, tip distinctly folded inside-out ..... CORDYLANTHUS

9' Leaves entire and oblong to lanceolate, or pinnately lobed; inflorescence an elongated spike, generally > 3 cm; fertile stamens 2 (except Chloropyron maritimum), sterile stamens reduced to rudimentary filaments or bearing sterile, long-hairy, appendages; middle lobe of lower corolla lip erect, not rolled under

10. Leaves entire; calyx = or slightly < corolla, notched ± 1 mm at tip; anther sacs ± overlapping; saline and alkaline habitats ..... CHLOROPYRON

10' Leaves pinnately lobed; calyx ± 1/2 corolla, divided > 1/2; anther sacs widely separated; not in saline or alkaline habitats ..... DICRANOSTEGIA


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [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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