Malacothamnus jonesii |
Malacothamnus marrubioides |
|
---|---|---|
Jones' bush-mallow, San Luis obispo or Jones' bushmallow, slender bushmallow |
foothill bush mallow, horehound bushmallow, pink-flower bushmallow |
|
Habit | Shrubs, 1–2.5 m, branches slender, flexuous, indument white, usually velvety, not shaggy, stellate hairs stalked, sometimes sublepidote, ca. 10–30-armed, glandular hairs often abundant. | Subshrubs, 1–2 m, branches slender, indument tawny, moderately dense, often viscid, not shaggy, stellate hairs sessile or stalked, not bristly, few–many-armed, glandular hairs usually abundant. |
Leaf | blades ash green, ovate, ± rhombic, or suborbiculate, unlobed or 3- or 5-lobed, 2.5–4.5(–7) cm, thin to thick, surfaces: soft tomentose-white, adaxial pale ash green, white-velvety, basal sinus open, not overlapping. |
blades broadly ovate or suborbiculate, unlobed or 3- or 5-lobed, 3–6(–8) cm, surfaces: moderately to copiously hairy, hairs grayish to tawny, 10–30-armed, basal sinus open, not overlapping. |
Inflorescences | open-paniculate or subracemose, flower clusters pedunculate, loose, 3(–6)-flowered, or solitary flowers; involucellar bractlets awl-shaped to filiform, 2.5–7(–8) × 1 mm, 1/3–1/2(–2/3) calyx length. |
usually short, interrupted, spicate to racemose, flower clusters sessile or short-pedunculate, glomerate to open, usually leafy; involucellar bractlets filiform, 5–13 × 1 mm, mostly 2/3 to equaling calyx length. |
Flowers | calyx campanulate, not angled in bud, 5–9(–10) mm, lobes distinct in bud, narrowly triangular or deltate-lanceolate, 3–6(–7.5) × 1.5–3(–4) mm, length 2 times width, equaling to 3 times tube length, apex acute to short-acuminate, usually sublepidote to tomentose, hairs 10–30-armed, sometimes densely lanate; petals pale pink, to 1 cm. |
calyx angled or slightly winged in bud, 7–15 mm, lobes lanceolate, triangular, or ovate, 4.5–12 × 1.7–3(–4) mm, 2–3 times as long as wide, 2–3 times tube length, apex long-acuminate, densely stellate-hairy, hairs many-armed; petals pink, to 2 cm. |
Mericarps | 2.5–3.8 mm. |
2–3.2 mm. |
2n | = 34. |
= 34. |
Malacothamnus jonesii |
Malacothamnus marrubioides |
|
Phenology | Flowering late Apr–Jun. | Flowering Apr–Jun(–Aug). |
Habitat | Open chaparral, foothill woodlands | Chaparral, washes, hillsides |
Elevation | 200–900 m (700–3000 ft) | 400–1100 m (1300–3600 ft) |
Distribution |
CA
|
CA; Mexico (Baja California)
|
Discussion | Malacothamnus jonesii is known from the central Coast Ranges. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Malacothamnus marrubioides is reported from lower elevations of the Sierra Nevada, and is known otherwise from the Transverse Ranges of southern California and Coast Ranges of Baja California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 6, p. 284. | FNA vol. 6, p. 284. |
Parent taxa | Malvaceae > subfam. Malvoideae > Malacothamnus | Malvaceae > subfam. Malvoideae > Malacothamnus |
Sibling taxa | ||
Synonyms | Malvastrum jonesii, M. gracilis, M. niveus, Malvastrum fremontii var. niveum, M. gracile, M. niveum | Malvastrum marrubioides, M. gabrielense |
Name authority | (Munz) Kearney: Leafl. W. Bot. 6: 135. (1951) | (Durand & Hilgard) Greene: Leafl. Bot. Observ. Crit. 1: 208. (1906) |
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