Key to Listera

View taxon page for Listera

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

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

1. Lip deeply 2-lobed; 

leaf 

Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).

base 

cordate 

Heart-shaped; often pertaining to a leaf in which the blade base on both sides of the petiole is rounded and convex.

..... L. cordata

1' Lip not lobed, tip ± 

entire 

Having margins that are continuous and smooth (i.e., without teeth, lobes, etc.).

or notched; leaf base abruptly 

tapered 

Gradually (not abruptly) narrower or smaller at base or tip.

or rounded

2. Lip 4.5–7 mm, tapered to base, base wider than 

column 

Structure at the center of an orchid flower formed by fusion of stamen(s) and style.

base, generally with 2 short, thread-like teeth, tip ± entire ..... L. banksiana

2' Lip 8–13 mm, abruptly narrowed to claw, claw ± as wide as column base, teeth indistinct, tip notched ..... L. convallarioides

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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/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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