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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

PYROLA WINTERGREEN

Gary D. Wallace & Erich Haber


Perennial herb, evergreen, rhizomed. Leaf: ± basal, reniform, ovate, ± round, elliptic, or obovate, ± entire to round- or sharp-toothed, petioled. Inflorescence: raceme, ± erect, not 1-sided, elongate; peduncle smooth, glabrous; bracts generally 1–several, ovate or lanceolate. Flower: radial, ± closed or bilateral, ± open, parts in 5s, free; petals without tubercles, upper 2 generally forming hood over upturned stamens; stamens 10, filaments generally widened at base, smooth, glabrous, anther pores generally on tubes; nectary 0; ovary superior, style straight, ± included, or downcurved, exserted, stigma peltate, with 5 spreading lobes above a prominent, reflexed collar or not peltate, with 5 ± erect lobes projecting beyond a delicate, reflexed collar. Fruit: capsule, pendent; valves opening base to tip, margins fibrous.
± 15–20 species: generally circumboreal, high mountains of Central America, Sumatra. (Latin: little pear, ± from leaf shape) [Haber 1987 Syst Bot 12:324–335]

Key to Pyrola

1. Style straight, ± included; flower ± radial, ± closed; anthers < 1 mm, pore not on tube; stigma peltate, lobes spreading (subg. Amelia) ..... P. minor

1' Style downcurved, exserted; flower bilateral, ± open; anthers 2–5.5 mm, pore on tube; stigma not peltate, lobes ± erect (subg. Pyrola)

2. Flower bract generally >> pedicel, ovate; sepals ovate to generally lanceolate or lance-oblong; pore tube < ± 1/5 anther ..... P. asarifolia

3. Flower bract < ± 1.5 × pedicel; sepals 2–3.5 mm, ovate to generally lanceolate; leaf ovate, round, or obovate, entire to obscurely round-toothed; anthers 2–3 mm ..... subsp. asarifolia

3' Flower bract generally >> 2 × pedicel; sepals 3–5.8 (generally >> 3.5) mm, lance-oblong; leaf ovate to elliptic, generally sharp-toothed; anthers 2.5–3.5 mm ..... subsp. bracteata

2' Flower bract < pedicel, lanceolate; sepals deltate to ovate; pore tube ± 1/3 anther

4. Leaf generally < 4 cm, ovate-elliptic, obovate, or reduced, bract-like, veins not white-bordered; petals pale green; sepals generally < 1.8 mm, deltate-ovate, ± blunt; n High Sierra Nevada (near Downieville, Sierra Co.) ..... P. chlorantha

4' Leaf ± 0 or generally 4–10 cm, ovate to elliptic, veins white-bordered, or oblanceolate, veins not white-bordered; petals ± green, cream-white, or pink; sepals generally >> 2 mm, ovate, acute; Northwestern California, Cascade Range, Sierra Nevada, San Francisco Bay Area, Outer South Coast Ranges, Transverse Ranges, Peninsular Ranges, Warner Mountains ..... P. picta

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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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