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MORACEAE MULBERRY FAMILY

Alan T. Whittemore & Elizabeth McClintock

[Perennial] shrub, [ vine] tree, generally with milky juice; monoecious or dioecious.
Leaf: alternate [ opposite], petioled, generally simple, entire to lobed, evergreen or deciduous; stipules present.
Inflorescence: raceme, spike, head, or flowers enclosed in thick receptacle, axillary.
Flower: unisexual or bisexual, small, ± radial; sepals generally 4, free or fused at base; petals 0; stamens generally 4, opposite sepals; ovary generally superior, 1-chambered, style simple or 2-parted.
Fruit: achenes many within fleshy calyces or surrounded by fleshy inflorescence receptacle.
37 genera, 1100 species: tropics, subtrop, some temperate; many cultivated (Ficus, fig; Artocarpus, breadfruit, jackfruit; Morus, mulberry). Insect- or wind-pollinated. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.

Key to Moraceae

MACLURA OSAGE ORANGE
Tree, thorny; dioecious.
Stem: buds scaly; stipule scars obscure, not encircling stem.
Leaf: alternate, or clustered with inflorescences, entire, deciduous; major veins pinnate.
Inflorescence: ± erect, spheric; staminate an umbel or umbel-like raceme, > 1 per axil, peduncled; pistillate a head, 1 per axil, sessile.
Pistillate flower: style simple.
Fruit: spheric, bumpy, of many achenes within fleshy calyces, yellow-green [red].
± 12 species: warm parts of Am, Africa, Asia, Australia. (William McClure, Am geologist, 1760–1840) Wind-pollinated.

M. pomifera (Raf.) C.K. Schneid.
NATURALIZED
Plant to 20 m; thorns to 3 cm.
Leaf: petiole 1–4 cm; blade 3–14 cm, ovate to lance- oblong, dark green, sparsely soft-hairy.
Fruit: 9–15 cm diam, yellow-green, densely irregularly warty.
Streambanks, disturbed areas; < 440 m. Great Central Valley, South Coast, Western Transverse Ranges; native to south-central United States. Widely planted; fruit inedible. Much less thorny with age. Apr–Jun [Online Interchange]
Unabridged note: Fruits fall unripe with the seeds still immature, the fruit then ripening on the ground and the seed maturing over the next several months. The following (and possibly other) accessions, if verified, would represent range extensions (as indicated): RSA600650/UCR150989, UCR99448 (SnGb).

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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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Bioregions in which taxon occursRed area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon;
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 have georeferencing or identification issues.
map of distribution 1

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.
Map made in collaboration with Scott Loarie. 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 Manual flowering time.