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Sidalcea diploscypha
FRINGED CHECKERBLOOM

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: SidalceaView DescriptionDichotomous Key

Common Name: CHECKERBLOOM
Habit: Annual, perennial herb; with taproot, clustered fleshy roots, caudex, adventitious roots, or occasionally shallow rhizome. Stem: +- decumbent or generally erect, some occasionally stolon-like; erect stem, branches terminating in inflorescence. Leaf: generally fewer above, occasionally +- rosetted; petioles below generally >> petioles above; blades below generally crenate to shallowly lobed, blades above often deeply palmate-lobed or -divided; stipules generally persistent. Inflorescence: head, spike, or raceme, in panicle or not, generally more open in fruit; bracts 2, generally stipule-like, occasionally involucre-like, united at base to +- entirely; bractlets 0(3), generally not in involucel. Flower: flowers generally bisexual, protandrous, occasionally functionally unisexual (occasionally, plants with either bisexual or pistillate flowers in a given sp.); calyx lobes >= tube; petals spreading or erect, purple or rose-pink to white, generally with some pale veins, base generally also paler than tips (occasionally darker), tip +- notched or fringed, petals on pistillate flowers shorter, darker, often <= 10 mm; filament tube generally stellate-puberulent, anthers near top, in generally 2 concentric series, generally pink, +- purple, or white; stigmas linear, on inner side of style branches, conspicuous in pistillate flowers. Fruit: segments generally 5--10, indehiscent, puberulent, glandular, or glabrous, beaked or not, side walls generally +- thin. Seed: 1, generally filling chamber, reniform, glabrous.
Species In Genus: +- 27 species: western North America: Alaska, Canada, to Mexico. Etymology: (Greek: combination of Sida, Alcea, 2 other names for mallows) Note: Some species highly variable, especially in leaves, growth stage; mature plants with fruit minimize considerable problems in identification, as does knowledge of plant base, underground parts; needs study.
Unabridged Note: This treatment differs from that in TJM (1993) in addition of new taxa and in segregation as species of former, primarily inland subspecies of Sidalcea malviflora, now primarily a coastal entity.

Sidalcea diploscypha (Torr. & A. Gray) A. Gray
NATIVE
Habit: Annual 4--6 dm. Stem: stellate-puberulent, long-fine-bristly. Leaf: bristly-puberulent; stipules of mid- to upper-stem divided into >= 2 linear lobes, generally > 10 mm; lobes of upper leaves narrow, middle lobe entire or with middle tooth >> lateral 2. Inflorescence: flower clusters crowded; axis generally not glandular, multicellular hairs generally few or 0; bracts 8--12 mm, divided into 2--4 linear lobes, finely bristly, generally involucre-like in age, >= calyx. Flower: calyx 8--12 mm, lobes lanceolate, long-acuminate, adaxially often with narrow purple line or spot at base, abaxially bristly and stellate-puberulent, generally not glandular, multicellular hairs generally few or 0; petals 20--35 mm, +- 19 mm wide, dark pink, dark spot occasionally at base, tip minutely fringed; filaments fused to tip. Fruit: segment +- 2.5 mm, glabrous, occasionally +- pink when fresh, back net-veined, beak 0.
Ecology: Grassland, open woodland, valleys, occasionally near vernal pools, generally serpentine; Elevation: < 840 m. Bioregional Distribution: NCoRO, CaRF, n&c SNF, ScV, CCo, SnFrB; Distribution Outside California: western Oregon. Flowering Time: Apr--May Note: Some plants +- intermediate to Sidalcea keckii, but species distinct by molecular evidence (Hill 2009); study needed.
Unabridged Note: Plants in Butte, Colusa, Lake, Napa, Solano, Yolo cos. sometimes +- intermediate to Sidalcea keckii, suggesting introgression but species distinct by molecular evidence; study needed.
eFlora Treatment Author: Steven R. Hill
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Next taxon: Sidalcea elegans

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Citation for this treatment: Steven R. Hill 2016. Sidalcea diploscypha, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44415, accessed on August 30, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 30, 2016.


Sidalcea diploscypha
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© 2014 Steve Matson
Sidalcea diploscypha
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© 2009 Barry Breckling
Sidalcea diploscypha
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© 2009 Barry Rice
Sidalcea diploscypha
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© 2009 Barry Breckling
Sidalcea diploscypha
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© 2009 Neal Kramer
Sidalcea diploscypha
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© 2014 Steve Matson

More photos of Sidalcea diploscypha in CalPhotos


Geographic subdivisions for Sidalcea diploscypha:
NCoRO, CaRF, n&c SNF, ScV, CCo, SnFrB;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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.