Pictorial Key To Fall Yellow-Flowering Shrubs In The San Gabriel Mountains

See the Introduction to this key.

This form of the key is not in the usual indented couplet form, in order to have the pictures illustrating each key couplet next to each other. To use this key, decide which line of each couplet best fits your plant, starting with couplet #1, then go to the couplet number indicated at the end of the chosen line until you arrive at the identification.

This key is also available without pictures.

CoupletNext Couplet or IdentificationPicture Illustrating Couplet Or Of Taxon
1. Ray flowers present, with obvious ligules (2)
1'. Ray flowers not present (3)
2. Leaves threadlike, not clustered in axils, deeply divided into narrow segments Senecio flaccidus var. douglasii (bush Senecio; common)
2'. Leaves threadlike, clustered in axils, not divided Ericameria pinifolia (pine goldenbush)
3. Leaves scale-like, less than 5 mm long Lepidospartum squamatum (scalebroom; common)
3'. Leaves not scale-like, greater than 5 mm long (4)
4. Leaves toothed Hazardia squarrosa (sawtooth goldenbush)
4'. Leaves entire (5)
5. Flowers 4-6 per head (6)
5'. Flowers 8-18 per head Ericameria parishii (Parish's goldenbush)
6. Phyllaries in 5 obvious vertical or nearly-vertical (slightly twisted) columns; flowers 5 per head Chrysothamnus nauseosus (rubber rabbitbrush; common)
6'. Phyllaries overlapping, not lined up in columns; flowers 4-6 per head Lepidospartum latisquamum (Nevada broomsage)

All pictures by Michael Charters except for Lepidospartum squamatum (calphotos pix - get reference) and Ericameria pinifolia (Gabi McLean) leaves. (or, better, michael, can you replace these pix with your own?)

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Copyright © 2004 by Tom Chester, Michael Charters and Jane Strong
Permission is freely granted to reproduce any or all of this page as long as credit is given to us at this source:
Comments and feedback: Tom Chester | Michael Charters | Jane Strong
Last update: 13 September 2004