Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Orobanchaceae

View taxon page for Orobanchaceae


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

1. Plant ± purple, brown, tan, or yellow-white, not green (holoparasites); leaves reduced to ± fleshy bractscorolla upper lip  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,  or  at tip; upper corolla lip straight to recurved at maturity; capsule 2-valved

3. Calyx 4-lobed, cut deeper on upper side ..... PHELIPANCHE (Phelipanche ramosa)

3' Calyx 5-lobed, cut equally or deeper on lower side ..... APHYLLON

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

4. Leaves , at least distally on stem

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

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

4' Leaves  or ± 

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

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

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

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

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

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

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

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

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

10' Leaves entire and  to , 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

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

11' 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.) . Jepson eFlora, [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.