Malacothamnus abbottii

(Eastwood) Kearney

Leafl. W. Bot. 6: 129. 1951.

Common names: Abbott’s bushmallow
Conservation concernEndemic
Basionym: Malvastrum abbottii Eastwood Leafl. W. Bot. 1: 215. 1936
Treatment appears in FNA Volume 6. Treatment on page 285. Mentioned on page 281.

Shrubs, to 1.5 m, branches slender, flexuous, indument complex: white, dense, sublepidote, hairs simple, fine, not shaggy, or stellate, sessile, many-armed. Leaf-blades ovate, unlobed or 3-lobed, 3–6.5 cm, thin, surfaces: copiously white-stellate, basal sinus open, not overlapping. Inflorescences open-paniculate, flowers solitary or in pedunculate clusters, loose, not subtended by conspicuous bracts, flowers 3 or 4 per node; involucellar bractlets lanceolate, 5–8 × 1–1.5 mm, 1/2–3/4 calyx length. Flowers: calyx slightly winged in bud, 9–11 mm, lobes ovate-acuminate, 6–7.5 × 2.5–3.5 mm, ca. 2 times as long as wide, 2–3 times tube length, apex acuminate, densely stellate; petals pale-pink, 1.5–2 cm. Mericarps to 3 mm.


Phenology: Flowering Oct.
Habitat: Stream banks, open chaparral
Elevation: 100–500 m

Discussion

Of conservation concern.

Malacothamnus abbottii was once considered to be extinct. It is known from three localities in southern Monterey County.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.No values specified.

... more about "Malacothamnus abbottii"
loculicidal +
David M. Bates +
(Eastwood) Kearney +
not overlapping +
cordate +  and truncate or cuneate +
Malvastrum abbottii +
3 cm30 mm <br />0.03 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
3-lobed;unlobed;ovate +
ovate +  and round rhombic or reniform unlobed or palmately 3-lobed 5-lobed or 7-lobed +
not conspicuous +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
slender +
not inflated +
not accrescent +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
indehiscent +  and loculicidal +
Abbott’s bushmallow +
white +, usually rose +  and pale-pink pinkish mauve or mauve +
100–500 m +
sparse;copious +
subterminal +
in pedunculate clusters , loose , not subtended by conspicuous bracts , flowers +  and solitary +
not conspicuous +
unisexual +  and bisexual +
subglobose-obovate +, disclike +  and not inflated +
Stream banks, open chaparral +
many-armed +, sessile +  and simple +
not shaggy +
bifurcate +
tough-fibrous +
connate +  and distinct +
simple +, stipulate +, sessile +, subsessile +  and petiolate +
distichous +  and alternate +
ovate-acuminate +
2.5mm;3.5mm +
entire +  and serrate +
smooth-walled +  and 1-celled +
asymmetrically suborbicular +  and obovoid-reniform +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
7-14-carpellate +
adnate +  and distinct +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Oct. +
Leafl. W. Bot. +
minutely stellate-hairy or rarely glabrous +  and papillate-stellate +
Black (?) +  and Brown (?) +
hairy +  and glabrous +
obovoid-reniform +
persistent +
Conservation concern +  and Endemic +
sessile +  and subsessile +
ascending;erect +
filiform +, linear +  and capitate +
1-2 times number of carpels +
? (?) +  and ? (?) +
7-14-branched +
Mallow +
Malacothamnus abbottii +
Malacothamnus +
species +
glabrate +  and densely hairy +
monoecious +, dioecious +  and hermaphroditic +