Sidalcea celata
Malvaceae
dwarf checkerbloom, Redding checkerbloom
mallow family
mostly single, usually erect, sometimes branched distally, solid (sometimes hollow in older, robust plants), sometimes glaucous, proximally densely bristly-hairy, hairs reflexed, stiff, simple, sometimes also coarse, 2–3-rayed, stellate, 1–1.6(–2.5) mm, pustulate, sparser distally, with minute, stellate hairs in inflorescence.
mostly basal, some cauline;
stipules usually early-deciduous, linear-lanceolate, 3–7 × 1 mm;
proximal petioles 15–18 cm, 3–4 times as long as blade, distal usually to 1/2 times to as long as blade;
blades: basal rounded, usually palmately 7-lobed, shallowly incised, 4–8 × 4–8 cm, lobes 1.5–2 cm wide, margins crenate-dentate, 3–7-toothed, apices obtuse;
distal 3–10, palmately 5-lobed, deeply incised, 2–6 × 2–6 cm, lobes narrow, linear, 2–3.5 × 2–4 mm, margins entire or 1–5-toothed, surfaces: abaxial stellate-hairy, hairs 6-rayed, 1.5 mm, adaxial hairy, hairs simple, 1.5 mm, distalmost glabrate adaxially and sometimes simple-hairy.
alternate, usually spiral, sometimes distichous (Malvoideae), usually petiolate, sometimes subsessile or sessile (Malvoideae), stipulate (usually well developed), simple (compound in Abelmoschus);
blade unlobed or palmately lobed, palmately veined.
erect, open, calyces not conspicuously overlapping except sometimes in bud, unbranched or branched, (5–)10–12(–23)-flowered, elongate, sometimes 1-sided, 10–40 cm;
bracts lanceolate, usually undivided, 3–4 mm, shorter than pedicels and calyx.
axillary, terminal, or leaf-opposed.
(3–)5–10(–15) mm;
involucellar bractlets absent.
usually bisexual, infrequently unisexual and pistillate, plants gynodioecious;
calyx (7–)9–10 mm, to 12–14 mm in fruit, densely stellate-puberulent;
petals pale pinkish lavender, often pale-veined especially when dry, pistillate 10–20 mm, bisexual 20–25(–31) mm;
staminal column 7–8(–10) mm, sparsely puberulent;
anthers white;
stigmas (6)7(8).
bisexual or unisexual, usually actinomorphic;
involucel (epicalyx) sometimes deciduous (Malvoideae, Sterculioideae), (4–)5(–8), distinct or connate;
petals 4 or 5 (absent in Bombacoideae and Sterculioideae, rarely absent in Grewioideae);
nectaries glandular hairs on adaxial base of sepals, petals, or androgynophores, sometimes absent;
androgynophore present or absent;
stamens [4–]5–100[–1500], usually in antipetalous groups; usually same number as sepals, distinct or connate, sessile or on androgynophore;
ovules (1–)2–many per ovary.
usually capsules, sometimes follicles, schizocarps, berries, or nuts.
2.5 mm.
cotyledons usually folded, endosperm absent or sparse to copious.
6–8 mm diam.;
mericarps (6)7(8), 3–4 mm, minutely glandularpuberulent, glabrescent, margins sometimes sharpedged, roughened, strongly reticulate-veined, sides and back deeply pitted, honeycomblike, median line on back but not furrowed, mucro 1 mm.
= 60.
Sidalcea celata
Malvaceae
Sidalcea celata has been recognized as a local species endemic to Shasta and Tehama counties (especially near Redding) in the northern inner North Coast Ranges; it was previously included within S. malviflora. Hitchcock’s concept of S. celata as a subspecies was broader and included plants from additional counties that do not match the type very well; most have been re-identified as S. asprella or S. oregana. Sidalcea celata has been confused with S. asprella, S. gigantea, and S. robusta and appears to be variable. Its narrow distribution, preference for serpentine, typical lack of elongated rhizomes, basally retrorsely hirsute stems, presence of basal leaves, and relatively large bisexual flowers and fruits are distinctive.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Genera ca. 240, species ca. 4350 (52 genera, 250 species in the flora).
Malvaceae comprise taxa traditionally separated among four families: Malvaceae, Bombacaceae Kunth, Sterculiaceae Ventenat, and Tiliaceae Jussieu. Morphological characters distinguishing these previously recognized families are notoriously ambiguous and/or absent. Multiple tribes and genera (for example, Fremontodendron) have been transferred between families as taxonomic boundaries changed throughout history. Molecular phylogenies indicate that only one of the four previously recognized families (Malvaceae in the narrow sense) forms a monophyletic group (C. Bayer et al. 1999; W. S. Alverson et al. 1999) and the monophyly of an expanded familial circumscription, including all four previously accepted families, is well documented (W. S. Judd and S. R. Manchester 1997; Alverson et al. 1998; Bayer et al.). Based on morphological, molecular, and biogeographic data, Malvaceae now include nine subfamilies (Bayer et al.; Alverson et al. 1999), six of which are represented in the flora area; Malvoideae and Bombacoideae form a monophyletic group that is part of a larger clade that includes some
traditional components of Tiliaceae and Sterculiaceae (now Tilioideae and Sterculioideae). A second clade contains Grewioideae and Byttneriodeae. Not included in the flora are members of subfamilies Brownlowioideae Burret, Dombeyoideae Beilschmied, and Helicteroideae Meisner.
Malvaceae range widely in inflorescence structure; all members share a basic repeating bicolor unit (a terminal flower and three bracts or an epicalyx; C. Bayer 1999). Floral nectaries in the family are composed of dense multicellular, glandular hairs on sepals, petals, or androgynophore (S. Vogel 2000). These nectaries provide nectar to a broad range of cells in wood; M. M. Chattaway 1933) are restricted to Malvaceae but are not present in every taxon.
Representatives of Malvaceae are present on every continent except Antarctica; diversity increases in warmer regions. A majority of the genera in Malvoideae and Bombacoideae are native to the New World (P. A. Fryxell 1997); members of Byttnerioideae, Grewioideae, and Sterculioideae are more evenly distributed throughout the Tropics. Tilioideae are restricted to the Northern Hemisphere (C. Bayer and K. Kubitzki 2003).
Malvaceae have an extensive pollen fossil record and a majority of the subfamilies are represented in the Paleocene or Eocene. Tilia (Tilioideae) fossil pollen and leaves are present in western North American temperate forests (where it is now absent) from the mid Eocene (S. R. Manchester 1994; H. W. Meyer and Manchester 1997). North American fossil pollen deposits of Bombacoideae are plentiful in the Cretaceous (W. Krutzsch 1989; B. E. Pfeil et al. 2002 and references therein).
The hairy seed coat of cotton [Gossypium (Malvoideae)] is the most economically valuable product in the family and the historical and evolutionary importance of its domestication is well documented. The seeds of cacao [Theobroma cacao (Sterculioideae)] are the basis of chocolate. Okra [Abelmoschus esculentus (Malvoideae)] is a major vegetable crop in the southeastern United States. Tilia (Tilioideae) trees are planted throughout temperate regions to beautify streets and parks. The marshmallow, Althaea officinalis (Malvoideae), is a perennial herb found in northeastern North America and Europe; the mucilage from its roots was used to make the original marshmallow.
Key to Subfamilies of Malvaceae
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key to Subfamilies of Malvaceae
1. Gynoecium apocarpous; petals absent; epicalyx absent; androgynophore present; flowers functionally unisexual | a. Sterculioideae |
1. Gynoecium syncarpous; petals present or absent; epicalyx present or absent; androgynophore present or absent; flowers usually bisexual | → 2 |
2. Petals absent | b. Bombacoideae |
2. Petals usually present | → 3 |
3. Epicalyx usually absent | → 4 |
3. Epicalyx usually present, rarely absent | → 5 |
4. Androgynophore absent; nectaries on sepals | c. Tilioideae |
4. Androgynophore present or absent; nectaries on petals or androgynophore | d. Grewioideae |
5. Staminodes usually present; anthers 2- or 3-thecate | e. Byttnerioideae |
5. Staminodes absent or relatively small; anthers 1-thecate | f. Malvoideae |
USDA Plants Database- Local floras:
CA, 
OR - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
