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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Perennial herb, shrub, tree. Stem: bark often peeling distinctively. Leaf: simple or 0, generally cauline, alternate, opposite (whorled), evergreen or deciduous, often leathery, petioled or not; stipules 0. Inflorescence: raceme, panicle, cyme, or flowers 1, terminal or axillary, generally bracted; pedicel often with 2 bractlets. Flower: generally bisexual, generally radial, bell-shaped, cylindric, or urn-shaped; sepals generally (0)4–5, generally free; petals generally (0)4–5, free or fused; stamens 8–10, free, filaments rarely appendaged, anthers awned or not, dehiscing by pores or slits; nectary generally present at ovary base, generally disk-like; ovary superior or inferior, chambers generally 1–5, placentas axile or parietal, ovules 1–many per chamber, style 1, stigma head- to funnel-like or lobed. Fruit: capsule, drupe, berry. Seed: generally many, winged or not.
± 100 genera, 3000 species: generally worldwide except deserts; some cultivated, especially Arbutus, Arctostaphylos, Rhododendron, Vaccinium. [Kron et al. 2002 Bot Rev 68:335–423] Monophyletic only if Empetraceae included, as treated here. Ledum included in Rhododendron. Non-green plants obtain nutrition from green plants through fungal intermediates. —Scientific Editors: Gary D. Wallace, Thomas J. Rosatti.
Key to Ericaceae
1 sp. (Greek: winged seed)
Perennial herb, non-green, ± pink, brown in age, densely sticky-glandular; roots brittle. Stem: 0. Leaf: 0. Inflorescence: raceme, 1.5–17 dm, pink to ± red, emerging from ground erect, persistent after seed dispersal, bracted, axis < 1.5 cm wide just below lowest flower; bractlets 0. Flower: pendent; sepals 5, free; corolla urn-shaped, petals 5, ± 4/5 fused, 6–9 mm, cream to ± yellow, lobes recurved; stamens 10, anthers dehiscing by separate slits, awned; ovary superior, chambers 5, placentas axile, style < 3 mm, jointed to ovary, stigma generally 1.5 mm wide, disk-like. Fruit: capsule, pendent, < 1.3 cm wide, loculicidal, dehiscing base to tip. Seed: many per chamber, < 0.2 mm wide, ovate; wing terminal, < 1 mm wide, membranous.
Mixed or conifer forest; 60–3700 m. Klamath Ranges, High North Coast Ranges, High Cascade Range, High Sierra Nevada, Tehachapi Mountain Area, Transverse Ranges, San Jacinto Mountains, Warner Mountains; to British Columbia, Mexico; also eastern North America. Jun–Aug [Online Interchange]
Previous taxon: Pterospora
Next taxon: Pyrola
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 23 2014
Citation for this treatment: [Author of taxon treatment] 2012. Pterospora, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=40272, accessed on Apr 23 2014
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Charles Webber © 1998 California Academy of Sciences
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