Malacothrix saxatilis var. commutata

(Torrey & A. Gray) Ferris

Aliso 4: 100. 1958.

Endemic
Basionym: Malacothrix commutata Torrey & A. Gray Fl. N. Amer. 2: 487. 1843
Treatment appears in FNA Volume 19. Treatment on page 319. Mentioned on page 318.

Plants rhizomatous or with woody caudices. Herbage glabrous or ± arachnose. Stems 1 (plants rhizomatous) or 2–3+ (plants with woody caudices), erect, freely branched, herbaceous, relatively leafy distally. Cauline leaves: proximal not pinnately lobed (lanceolate to lance-linear, margins entire or denticulate, apices acute to acuminate); distal lanceolate or elliptic to linear, margins entire or denticulate, apices acute to acuminate. Arrays of heads relatively crowded. Cypselae 2–2.5 mm. 2n = 18.


Phenology: Flowering Mar–Dec.
Habitat: Crumbling shale along roadcuts, in canyons, chaparral, foothill woodlands
Elevation: 200–1600 m

Discussion

Variety commutata grows on the eastern face of the Transverse Range (Ventura County), in canyons in the Coast Ranges to Monterey County, and in the Breckenridge Mountains (Kern County).

Selected References

None.

Lower Taxa

None.

"fine" is not a number."]" is not declared as a valid unit of measurement for this property.

acute;acuminate +
scarious +
ovate +  and lanceolate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
W. S. Davis +
(Torrey & A. Gray) Ferris +
decurrent +
Malacothrix commutata +
compound +  and simple +
lanceolate;obovate oblanceolate or spatulate +
tuberculate +, rugose +, muricate +  and smooth +
lanceolate;subulate +
subequal +  and unequal +
filiform +
zygomorphic +, actinomorphic +  and (3-)5-merous +
1.3 cm13 mm <br />0.013 m <br /> (2 cm20 mm <br />0.02 m <br />) +
fimbriate +
stramineous +  and brown or purplish brown +
prismatic +
200–1600 m +
glabrescent +, arachnose +, glabrous +, more or less arachnose +  and tomentose +
winged +  and beaked +
dispersed +
Crumbling shale along roadcuts, in canyons, chaparral, foothill woodlands +
indeterminate +
arachnose +  and glabrous +
each +  and sessile +
1.2 cm12 mm <br />0.012 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
campanulate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
cauline +  and basal +
elliptic to linear +
denticulate +, entire +  and lanceolate +
0.05mm +  and 0.2mm +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
2-carpellate +
persistent +
Flowering Mar–Dec. +
connate +  and distinct +
18 +  and 30 +
subequal +  and unequal +
flat;more or less convex +
more prominent +
crenate +
exalbuminous +
leafy +  and branched +
sparsely arachnose +  and tomentose +
2 +  and 3 +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Malacothrix saxatilis var. commutata +
Malacothrix saxatilis +
variety +
dentate to denticulate +  and entire +
20 cm200 mm <br />0.2 m <br /> (90 cm900 mm <br />0.9 m <br />) +
90 cm900 mm <br />0.9 m <br /> (200 cm2,000 mm <br />2 m <br />) +
with woody caudices +  and rhizomatous +