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Eremalche exilis

WHITE MALLOW


Higher Taxonomy
Family: MalvaceaeView DescriptionDichotomous Key
Common Name: MALLOW FAMILY
Habit: 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).
Genera In Family: 266 genera, 4025 species: worldwide, especially warm regions; some cultivated (e.g., Abelmoschus okra; Alcea hollyhock; Gossypium cotton; Hibiscus hibiscus). Note: 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).
eFlora Treatment Author: Steven R. Hill, except as noted
Scientific Editor: Steven R. Hill, Thomas J. Rosatti.
Genus: EremalcheView DescriptionDichotomous Key


Habit: 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.
Etymology: (Greek: eremi, lonely, and malache, mallow, lonely mallow, from desert habitats)
eFlora Treatment Author: Katarina Andreasen & David M. Bates
Reference: Andreasen 2005 Conservation Genet 6:399--412
Unabridged Reference: Fryxell 1988 Syst Bot Monogr 25:151--155
Eremalche exilis (A. Gray) Greene
NATIVE
Stem: prostrate to decumbent, < 50 cm, finely stellate-hairy. Leaf: generally 1--2.5 cm wide, 3--5-lobed; lobe tips entire or 3-toothed. Inflorescence: flowers 1 in leaf axils, scattered on stem, occasionally near stem base, +- = subtending leaves; bractlets 3--7 mm. Flower: bisexual; calyx 4--7 mm, lobes 3--5 mm, 1.5--2.5 mm wide; petals 4--5.5 mm, white or pale pink-purple. Fruit: segments 9--13, 1.4--1.8 mm, +- wedge-shaped in ×-section, margins rounded, outer wall cross-ridged. Chromosomes: 2n=20,40.
Ecology: Desert scrub; Elevation: < 1500 m. Bioregional Distribution: SnJV, SCoRI, ChI (probably extirpated), SnGb, W&I, D; Distribution Outside California: Arizona, Nevada, Utah, northern Baja California. Flowering Time: Mar--May
Synonyms: Malvastrum exilis A. Gray
Jepson eFlora Author: Katarina Andreasen & David M. Bates
Reference: Andreasen 2005 Conservation Genet 6:399--412
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

Previous taxon: Eremalche
Next taxon: Eremalche parryi

Botanical illustration including Eremalche exilisbotanical illustration including Eremalche exilis


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Citation for this treatment: Katarina Andreasen & David M. Bates 2012, Eremalche exilis, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=24546, accessed on July 22, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on July 22, 2024.

Eremalche exilis
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©2013 Neal Kramer
Eremalche exilis
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©2018 Steve Matson
Eremalche exilis
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©2017 Steve Matson
Eremalche exilis
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©2024 Neal Kramer
Eremalche exilis
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©2016 Neal Kramer

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Geographic subdivisions for Eremalche exilis:
SnJV, SCoRI, ChI (probably extirpated), SnGb, W&I, D
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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 occurrence).






 

Data provided by the participants of the  Consortium of California Herbaria.

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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month Flowering-Fruiting Monthly Counts

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).