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MALVACEAE MALLOW FAMILY

Steven R. Hill, except as noted

Annual to tree; generally with stellate hairs, often with bristles or peltate scales; juice generally mucilage-like; bark fibrous. Leaf: generally cauline, alternate, petioled, simple [palmate-compound], generally palmate-lobed and/or veined, generally toothed, evergreen or not; stipules persistent or not. Inflorescence: head, spike, raceme, or panicle, in panicle or not (a compound panicle), or flowers >= 1 in leaf axils, or flowers generally 1 opposite a leaf or on a spur; bracts leaf-like or not; bractlets 0 or on flowering stalks, often closely subtending calyx, generally in involucel. Flower: generally bisexual, radial; sepals 5, generally fused at base, abutting in bud, larger in fruit or not, nectaries as tufts of glandular hairs at base; petals (0)5, free from each other but generally fused at base to, falling with filament tube, clawed or not; stamens 5–many, filaments fused for most of length into tube around style, staminodes 5, alternate stamens, or generally 0; pistil 1, ovary superior, stalked or generally not, chambers generally >= 5, styles or style branches, stigmas generally 1 or 1–2 × chamber number. Fruit: loculicidal capsule, [berry], or 5–many, disk- or wedge-shaped segments (= mericarps).
266 genera, 4025 species: worldwide, especially warm regions; some cultivated (e.g., Abelmoschus okra; Alcea hollyhock; Gossypium cotton; Hibiscus hibiscus). [Angiosperm Phylogeny Group 1998 Ann Missouri Bot Gard 85:531–553] Recently treated to include Bombacaceae, Sterculiaceae, Tiliaceae. Mature fruit needed for identification; "outer edges" are surfaces between sides and back (abaxial surface) of segment. "Flower stalk" used instead of "pedicel," "peduncle," especially where both needed (i.e., when flowers both 1 in leaf axils and otherwise). —Scientific Editors: Steven R. Hill, Thomas J. Rosatti.
Unabridged references: [Alverson et al. 1999 Amer J Bot 86:1474–1486; Bayer et al. 1999 Bot J Linn Soc 129:267–303; Hill 2009 Madroño 56:104–111]

Key to Malvaceae

EREMALCHE

Katarina Andreasen & David M. Bates

Annual, glabrous or generally sparsely stellate-hairy; plant with bisexual or only pistillate flowers. Stem: prostrate to erect, ± hollow. Leaf: blade toothed to lobed or dissected, bases symmetric. Inflorescence: flowers 1 in leaf axils or in axillary or terminal clusters; flowering stalks longer in fruit; bractlets subtending calyx 3, persistent, linear to thread-like. Flower: calyx lobes > tube, acuminate; petals generally > calyx, white to ± purple (drying darker); filament tube included, anthers at tip; styles > filament tube, stigmas head-like. Fruit: segments generally 9–22 or 25–35, unarmed, glabrous, generally ± black, sides fragile, outer edges, back ridged or net-veined.
3 species: southwestern United States, northwestern Mexico. (Greek: lonely mallow, from desert habitats) [Andreasen 2005 Conservation Genet 6:399–412]
Unabridged etymology: (Greek: eremi, lonely, and malache, mallow, lonely mallow, from desert habitats)
Unabridged references: [Fryxell 1988 Syst Bot Monogr 25:151–155]

Key to Eremalche

E. parryi (Greene) Greene
NATIVE
Plant with bisexual or occasionally only pistillate flowers. Stem: generally ± erect, < 50 cm, often with ascending basal branches, densely stellate-hairy near tips. Leaf: generally 2–5 cm wide, deeply 3–5-lobed to -dissected; lobe tips ± deeply toothed. Inflorescence: flowers generally > leaves; bractlets 2.5–15 mm. Flower: calyx 3–14 mm, lobes 3–11 mm, 1.5–5 mm wide; petals 3–25 mm, white to ± purple. Fruit: segments 9–22, 1.5–2 mm, ± wedge-shaped in ×-section, cushion-like, margins rounded, outer wall cross-ridged.
2n=20. Subspecies intergrade. [Online Interchange]

E. parryi subsp. parryi PARRY'S MALLOW
NATIVE
Plant with bisexual flowers. Inflorescence: bractlets 7–15 mm. Flower: calyx 10–14 mm, lobes 8–11 mm, 2.5–5 mm wide; petals 15–25 mm, ± purple. Fruit: segments 14–22.
Grassland, scrub, foothill woodland; 30–400 m. c&s Sierra Nevada Foothills, Tehachapi Mountain Area, San Joaquin Valley, e San Francisco Bay Area, South Coast Ranges, Western Transverse Ranges. Mar–May [Online Interchange]

Previous taxon: Eremalche parryi subsp. kernensis
Next taxon: Eremalche rotundifolia

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 20 2014
Citation for this treatment: [Author of taxon treatment] 2013. Eremalche, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=50324, accessed on Oct 20 2014

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Geographic subdivisions indicated for the distribution of Eremalche parryi subsp. parryi 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.