Sphaeralcea munroana |
Sphaeralcea digitata |
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Munro's desert-mallow, Munro's globemallow, munroe's globe-mallow, orange globe mallow, white-stem globe-mallow |
juniper globemallow, palmate globemallow, slippery globemallow |
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Habit | Plants perennial. | Plants perennial. |
Stems | erect, green to gray-green, 2.5–9 dm, gray-green canescent. |
decumbent to erect, green to gray-green, (1–)3–4(–5.5) dm, sparsely pubescent. |
Leaf | blades green to gray-green, triangular, unlobed or weakly 5-lobed, to 4.5 cm, not rugose, base cuneate to truncate, margins coarsely toothed, surfaces stellate-pubescent. |
blades green to gray-green, wide-triangular, 3-lobed or pedately divided, (0.5–)1.5–2.5(–4) cm, not rugose, base cuneate, margins entire, surfaces stellate-pubescent. |
Inflorescences | narrowly paniculate, crowded, few–many-flowered, flowers in clusters, tip not leafy; involucellar bractlets green to tan. |
racemose, flowers solitary or proximal nodes 2- or 3-flowered, tip ± leafless; involucellar bractlets green to tan. |
Flowers | sepals 4–9 mm, tips forming weak beak in bud; petals red-orange, 11–14 mm; anthers yellow. |
sepals 3.5–8 mm; petals red-orange, 8–14 mm; anthers purple. |
Seeds | 1 per mericarp, brown, slightly hairy. |
1(or 2) per mericarp, brown or black, glabrous or pubescent. |
Schizocarps | spheric; mericarps 12, 3.5–4 × 2.5–3 mm, chartaceous, nonreticulate dehiscent part 55% of height, tip acute, with reflexed apical cusp, indehiscent part not wider than dehiscent part. |
cylindric to widely conic; mericarps 9–13, 3–5 × 2–2.5 mm, thickish, chartaceous, nonreticulate dehiscent part 50–60% of height, tip muticous to short-cuspidate, indehiscent part not wider than dehiscent part, sides finely, not highly reticulate. |
2n | = 10. |
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Sphaeralcea munroana |
Sphaeralcea digitata |
|
Phenology | Flowering spring–summer. | Flowering spring–summer. |
Habitat | Xeric plains and slopes | Diverse substrates including gypsum, desert scrub |
Elevation | 100–2300 m (300–7500 ft) | 1200–2200 m (3900–7200 ft) |
Distribution |
CA; ID; MT; NV; OR; UT; WA; WY; BC
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AZ; NM; TX; UT; Mexico (Chihuahua, Sonora)
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Discussion | Sphaeralcea munroana and S. parvifolia are difficult to distinguish and may be conspecific. Sphaeralcea parvifolia is more southern and smaller overall; S. munroana is more northern and more robust. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 6, p. 367. | FNA vol. 6, p. 363. |
Parent taxa | Malvaceae > subfam. Malvoideae > Sphaeralcea | Malvaceae > subfam. Malvoideae > Sphaeralcea |
Sibling taxa | ||
Synonyms | Malva munroana, M. creeana, Malvastrum munroanum, Malveopsis munroana, Nuttallia munroana, S. munroana subsp. subrhomboidea, S. munroana var. subrhomboidea, S. subrhomboidea | Malvastrum digitatum, S. digitata var. angustiloba, S. digitata subsp. tenuipes, S. digitata var. tenuipes, S. pedata var. angustiloba, S. tenuipes |
Name authority | (Douglas ex Lindley) Spach: Hist. Nat. Vég. 14: 403. (1847) | (Greene) Rydberg: Bull. Torrey Bot. Club 40: 58. (1913) |
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