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

Key to Piperia

View taxon page for Piperia

(For a list of species in Piperia, use the above link.)

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

1. Spur 6–18 mm (2.5–9 mm in Piperia cooperi, keyed only under 1')

2. Spur ± straight, perpendicular to inflorescence axis; upper sepal pointed forward; stem generally < 3 mm diam ..... P. transversa

2' Spur ± curved, parallel to inflorescence axis; upper sepal  to  to curved back; stem generally > 3 mm diam

3. Sepals white with dark green midvein ..... P. elegans subsp. elegans

3' Perianth green to yellow-green

4. Lip deltate-ovate; lower sepals  ..... P. michaelii

4' Lip narrowly  or lance-deltate; lower sepals ± 

5. Lateral petals ± sickle-shaped, 2 mm wide at base, 2–3 × as long ..... P. elongata

5' Lateral petals , 1 mm wide at base, 4–5 × as long ..... P. leptopetala (2)

1' Spur 1–6(9) mm

6. Perianth mostly white or white-margined on upper sepal, lateral petals, mostly white on lower sepals, lip; lip pointed down toward spur

7. Inflorescence generally ± 1-sided; stem bracts < 6; lip ± , ±  ..... P. candida

7' Inflorescence ± not 1-sided; stem bracts > 6; lip ± ovate or not, ± 

8. Lateral petals ovate to lance-oblong, white margins ± equal; stem base swollen toward tuber; fragrance at night ..... P. elegans subsp. decurtata

8' Lateral petals sickle-shaped, white margins unequal, outer much wider than inner; stem base narrowed toward tuber; fragrance in daytime ..... P. yadonii

6' Perianth green; lip ± straight to strongly upcurved above middle

9. Spur < lip, 1–2.5 mm; leaves grass-like, erect, 3–10(19) mm wide ..... P. colemanii

9' Spur >= lip, 2–9 mm; leaves not grass-like,  to spreading, (5)10–40 mm wide

10. Lateral petals linear, 4–5 × longer than wide; spur ; fragrance lemony or otherwise pleasant but not honey-like ..... P. leptopetala (2)

10' Lateral petals lanceolate to deltate-ovate, < 3.5 × longer than wide; spur , blunt; fragrance musky, soapy, or honey-like

11. Inflorescence axis <= ; lip deltate-ovate; fragrance honey-like; stem long-tapered toward tuber ..... P. cooperi

11' Inflorescence axis generally > peduncle; lip broadly ovate to lance-elliptic; fragrance musky, soapy, or honey-like; stem uniform or swollen toward tuber ..... P. unalascensis


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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 .

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