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MYRTACEAE MYRTLE FAMILY

Leslie R. Landrum, except as noted

[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, southern 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, subtropics, Mediterranean 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

CHAMELAUCIUM
Shrub. Leaf: opposite, each pair at right angles to pairs above; linear, awl-shaped [lanceolate, oblong, or ovate]. Inflorescence: 1–few-flowered. Flower: parts in 5s; perianth parts free; hypanthium obconic to cylindric-obconic, exceeding ovary; petals white, pink, purple or yellow; stamens ± 10, staminodes 0 or ± 10, stamen, staminode filaments united into a short tubular ring; ovary 1-chambered; style extending to or beyond stamens, with ring of hairs just below stigma; ovules 4–8. Fruit: nut, chambers 1. Seed: 1, winged or not.
± 13 species: Australasia. (Greek: dwarf, white) [Lam et al. 2002 Austral Syst Bot 15:535–543]

C. uncinatum Schauer WAXFLOWER
WAIF
Plant to 3 m, glabrous. Leaf: 1.6–4 cm, 0.5–1 mm wide, linear or awl-shaped, glandular, midvein impressed adaxially, tip mucronate, often downcurved; veins inconspicuous. Inflorescence: raceme-like, ± flat-topped cluster or flowers 1 in axils of leaves or often deciduous bracts. Flower: < 2 cm wide, peduncles 4–12 mm; calyx lobes 0.5–1 mm, broadly rounded; petals 4–5 mm, ± round, spreading, white, pink, or purple, ephemeral; stamens 10, 1–2 mm, alternate staminodes; style ± 4 mm. s South Coast (San Diego Co.); native to western Australia. Escaped from cultivation but no specimens to document naturalization, ecology, elevation, or California distribution. Spring [Online Interchange]

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 30 2014
Citation for this treatment: [Author of taxon treatment] 2013. Chamelaucium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=81817, accessed on Sep 30 2014

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Geographic subdivisions indicated for the distribution of Chamelaucium uncinatum Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.