Jepson eFlora
Key to families | Table of families and genera

Key to Orchidaceae

View taxon page for Orchidaceae

1. Functional stamens 2, staminodes 1 ..... CYPRIPEDIUM

1' Functional stamens 1, staminodes 0

2. Leaves 0 at flower

3. Flower spurred, without mentum ..... PIPERIA (2)

3' Flower not spurred, with mentum or not

4. Flowers in spiral, lip pouch-like ..... SPIRANTHES (2)

4' Flowers not in spiral, lip not pouch-like

5. Plant white, becoming ± yellow or brown ..... CEPHALANTHERA

5' Plant brown, tan, ± pink, ± red, ± purple (± green) ..... CORALLORHIZA

2' Leaves present at flower

6. Leaves cauline

7. Leaves 2, ± opposite, ± at mid stem ..... LISTERA

7' Leaves > 2, alternate, along stem

8. Leaves with > 1 lengthwise fold, green, white, or pink; flower not spurred ..... EPIPACTIS

8' Leaves with 1 lengthwise fold, green; flower spurred ..... PLATANTHERA

6' Leaves ± basal

9. Leaves 1(2)

10. Flowers 1, lip pouch-like ..... CALYPSO

10' Flowers > 1, lip not pouch-like ..... MALAXIS

9' Leaves > 1

11. Leaves in rosette ..... GOODYERA

11' Leaves not in rosette

12. Flowers not in spiral, spurred ..... PIPERIA (2)

12' Flowers in spiral, not spurred ..... SPIRANTHES (2)

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [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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