Ericameria

Grey rabbitbush Chrysothamnus nauseosus, copyright Walter Siegmund.

Belongs within: Astereae.

Ericameria is a genus of shrubby composite plants found in western North America.

Characters (from Roberts & Urbatsch 2003): Habit shrubby; leaves resin-coated, filiform to laminar; captulescences usually corymbiform; phyllaries multiseriate, imbricate, with evident costae; ray corollas, when present, usually small; pappus uniseriate, composed of barbellate bristles.

<==Ericameria
    |  i. s.: E. albida [=Chrysothamnus albidus] RU03
    |--E. sect. Ericameria [=Haplopappus sect. Ericameria] RU03
    |    |--E. arborescens RU03 [=Haplopappus arborescens H93]
    |    |--E. brachylepis RU03 [incl. Haplopappus propinquus H93]
    |    |--E. cooperi RU03 [=Haplopappus cooperi H93]
    |    |--E. cuneata RU03 [=Haplopappus cuneatus H93
    |    |    |--E. c. var. cuneata H93
    |    |    |--E. c. var. macrocephala H93
    |    |    `--E. c. var. spathulata [=Haplopappus cuneatus var. spathulatus] H93
    |    |--E. ericoides RU03 [=Haplopappus ericoides H93; incl. E. ericoides ssp. blakei H93]
    |    |--E. fasciculata RU03 [incl. Haplopappus eastwoodiae H93]
    |    |--E. juarezensis RU03
    |    |--E. laricifolia RU03 [=Haplopappus laricifolius H93]
    |    |--E. martirensis RU03
    |    |--E. palmeri RU03 [=Haplopappus palmeri H93]
    |    |    |--E. p. var. palmeri H93
    |    |    `--E. p. var. pachylepis [=Haplopappus palmeri var. pachylepis] H93
    |    |--E. paniculata [=Chrysothamnus paniculatus] RU03
    |    |--E. parishii RU03 [=Haplopappus parishii H93, E. arborescens ssp. parishii H93]
    |    |    |--E. p. var. parishii H93
    |    |    `--E. p. var. peninsularis H93
    |    |--E. pinifolia RU03 [=Haplopappus pinifolius H93]
    |    `--E. teretifolia [=Chrysothamnus teretifolius] RU03
    |--E. sect. Asiris [=Haplopappus sect. Asiris] RU03
    |    |--E. cervina RU03
    |    |--E. nana RU03 [=Haplopappus nanus H93]
    |    |--E. obovata RU03
    |    |--E. resinosa RU03
    |    `--E. watsonii [=Macronema watsonii] RU03
    |--E. sect. Macronema [=Haplopappus sect. Macronema] RU03
    |    |--E. bloomeri RU03 [=Haplopappus bloomeri H93]
    |    |--E. × bolanderi [E. discoidea × E. nauseosa] RU03
    |    |--E. compacta RU03
    |    |--E. crispa RU03
    |    |--E. discoidea [=Haplopappus macronema] RU03
    |    |    |--E. d. var. discoidea RU03
    |    |    `--E. d. var. linearis RU03
    |    |--E. gilmanii RU03 [=Haplopappus gilmanii H93]
    |    |--E. greenei RU03 [=Haplopappus greenei H93]
    |    |--E. lignumviridis RU03
    |    |--E. nauseosa [=Chrysothamnus nauseosus] RU03
    |    |    |--E. n. ssp. nauseosa RU03
    |    |    |--‘Chrysothamnus nauseosus’ ssp. albicaulis [incl. C. californicus, C. nauseosus var. macrophyllus] H93
    |    |    |--‘Chrysothamnus nauseosus’ ssp. bernardinus H93
    |    |    |--‘Chrysothamnus nauseosus’ ssp. ceruminosus H93
    |    |    |--E. n. ssp. consimilis RU03 (see below for synonymy)
    |    |    |--‘Chrysothamnus nauseosus’ ssp. hololeucus [incl. C. nauseosus ssp. gnaphalodes] H93
    |    |    |--‘Chrysothamnus nauseosus’ ssp. leiospermus H93
    |    |    |--‘Chrysothamnus nauseosus’ ssp. mohavensis H93
    |    |    |--‘Chrysothamnus nauseosus’ ssp. × viscosus [C. nauseosus ssp. hololeucus × Ericameria cuneata] H93
    |    |    `--‘Chrysothamnus nauseosus’ ssp. washoensis H93
    |    |--E. ophitidis RU03 [=Haplopappus ophitidis H93]
    |    |--E. parryi [=Chrysothamnus parryi] RU03
    |    |    |--E. p. ssp. parryi H93
    |    |    |--‘Chrysothamnus’ p. ssp. × bolanderi [C. nauseosus ssp. albicaulis × Ericameria discoidea] H93
    |    |    |--‘Chrysothamnus’ p. ssp. asper H93
    |    |    |--‘Chrysothamnus’ p. ssp. imulus H93
    |    |    |--‘Chrysothamnus’ p. ssp. latior H93
    |    |    |--‘Chrysothamnus’ p. ssp. monocephalus H93
    |    |    |--‘Chrysothamnus’ p. ssp. nevadensis H93
    |    |    `--‘Chrysothamnus’ p. ssp. vulcanicus H93
    |    |--E. suffruticosa RU03 [=Haplopappus suffruticosus H93]
    |    `--E. zionis RU03
    `--E. (sect. Stenotopsis) linearifolia [=Haplopappus linearifolius] RU03

Ericameria nauseosa ssp. consimilis RU03 [=Chrysothamnus nauseosus ssp. consimilis H93; incl. C. nauseosus ssp. viridulus H93]

*Type species of generic name indicated

REFERENCES

[H93] Hickman, J. C. (ed.) 1993. The Jepson Manual: Higher Plants of California. University of California Press: Berkeley (California).

[RU03] Roberts, R. P., & L. E. Urbatsch. 2003. Molecular phylogeny of Ericameria (Asteraceae, Astereae) based on nuclear ribosomal 3´ ETS and ITS sequence data. Taxon 52: 209–228.