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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
[Subshrub] shrub, tree, trunk bark smooth or scaly; glands 0 or embedded in epidermis.
Leaf: opposite or alternate, persistent, generally glandular when young.
Inflorescence: generally axillary, raceme, panicle, cyme, or flowers 1.
Flower: generally bisexual, parts in 4s, 5s, generally ± white; hypanthium exceeding ovary or not; stamens generally many; ovary [rarely superior to] inferior, 2–5(18)-chambered; placentas axillary, just below top, or basal, ovules few to many, generally in 2–many series.
Fruit: berry, capsule, nut.
Seed: 1–many; coat membranous to ± leathery or hard, bony; embryo starchy or oily (of great taxonomic importance).
100 genera, ± 3500 species: many species tropical America, Australasia, fewer Africa, s Asia; economically important for timber (Eucalyptus), spices (Syzygium aromaticum (L.) Merr. & L.M. Perry, cloves; Pimenta dioica (L.) Merr., allspice), edible fruits (Psidium guajava L., guava; Acca sellowiana (O. Berg) Burret, pineapple guava), many orns (Eucalyptus, Melaleuca, several other genera). [McVaugh 1968 Taxon 17:354–418] Apparently of Gondwanan origins; tropics, subtrop, Medit climates. Chamelaucium uncinatum Schauer, Luma apiculata (DC.) Burret, Melaleuca citrina (Curtis) Dum.Cours., Myrtus communis L., Syzygium australe (Link) B. Hyland are waifs. —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [McVaugh 1968 Taxon 17:354–418; Wilson et al. 2005 Plant Syst Evol 251:3–19]
Key to Myrtaceae
Tree, shrub.Key to Eucalyptus
Stem: generally erect; bark shedding, smooth, or persistent near base (occasionally) or throughout, rough; twigs generally round.
Leaf: juvenile generally opposite, horizontal, sessile, ± cordate, entire, glaucous; adult generally alternate, vertical, petioled, ± lanceolate, entire, glandular, glabrous, generally same color on both sides.
Inflorescence: axillary, (1)3–many-flowered, stalked umbel or panicle-like cluster of such umbels.
Flower: perianth (generally, entirety of calyx lobes, petals) fused into bud cap in bud, bud cap shed at flower; stamens many, in several series, generally all fertile, white (yellow, red, pink); ovary chambers 3–6, fused to hypanthium.
Fruit: capsule, thick-walled, woody, generally smooth, generally dehiscing at top.
Seed: generally 1–3 mm, wind-dispersed.
± 700 species: most endemic to Australia; > 250 species. Cult in CA; important for oils, tannins, timber, orns. (Greek: true cap, for bud cap) [Brooker 2000 Austral Syst Bot 13:79–148] World's largest flowering plants, some > 100 m; Eucalyptus pulverulenta Sims excluded, cultivated only.
Stem: < 60 m, straight; bark sometimes persistent near base, otherwise shed in irregular strips, smooth, blue-gray; twigs ± square or winged.
Leaf: 10–30 cm, 2.5–4 cm wide, generally narrowly lanceolate, often sickle-shaped, generally aromatic.
Inflorescence: flowers 1 in axils, ± sessile.
Flower: hypanthium < 2 cm, ± 4-ribbed, obconic, glaucous; bud cap flat- hemispheric, with central knob, generally < hypanthium, warty, glaucous; stamens white.
Fruit: > 2 cm, ± 4-ribbed, warty, glaucous, rim wide, thickened; valves ± not exserted.
Common. Disturbed areas; < 300 m. Outer North Coast Ranges, Great Central Valley, Central Western California, Southwestern California;
Previous taxon: Eucalyptus conferruminata
Next taxon: Eucalyptus polyanthemos
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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Chart based on elevation range in Manual and elevations and coordinates of CCH records.
Data provided by the participants of the Consortium of California Herbaria.
Note: About half of the CCH records include both elevation and coordinates.
| Data provided by the participants of the Consortium of California Herbaria.
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