Adenostoma fasciculatum var. obtusifolium

S. Watson in W. H. Brewer et al.

in W. H. Brewer et al., Bot. California 1: 184. 1876.

Treatment appears in FNA Volume 9. Treatment on page 394. Mentioned on page 393.

Stems erect-ascending, spreading; internodes 1–7 mm; young stems pubescent to villous (hairs curled or retrorse). Leaves oblanceolate-clavate, obscurely semiterete, 4–6.5 mm (expanded distally), apex usually obtuse.


Phenology: Flowering (Apr–)May–Jun(–Aug).
Habitat: Mesas, ravines, coastal sage scrub-chaparral
Elevation: 20–1100(–2100) m

Distribution

V9 658-distribution-map.jpg

Calif., Mexico (Baja California)

Discussion

Variety obtusifolium is known from coastal southern California (southern Orange and San Diego counties) and northern Baja California, where it introgresses with var. fasciculatum, resulting in shorter, more strongly hairy stems, and leaves less apiculate or mixed obtuse-acute in some interior populations.

Selected References

None.

Lower Taxa

None.
villous +, hirtellous +  and glabrous +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
1.2mm +  and 1.8mm +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
William Jones +  and James Henrickson +
S. Watson in W. H. Brewer et al. +
compound +  and simple +
opposite +  and alternate +
persistent +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
linear-oblanceolate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
? (?) +  and ? (?) +
0.6mm +  and 1mm +
sericeous +  and glabrous +
opposite +  and alternate +
mature +  and juvenile +
1-2-pinnatifid +
Calif. +  and Mexico (Baja California) +
not +  and aggregated +
20–1100(–2100) m +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
ellipsoid +  and obovoid +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
hirtellous +  and glabrous +
undulate +  and annular +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Mesas, ravines, coastal sage scrub-chaparral +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
hirtellous +  and glabrous +
0.1 cm1 mm <br />0.001 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
10 cm100 mm <br />0.1 m <br /> (17 cm170 mm <br />0.17 m <br />) +
9 cm90 mm <br />0.09 m <br /> (15 cm150 mm <br />0.15 m <br />) +
3.5cm +  and 10cm +
1cm +  and 9cm +
crassinucellate +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
red brownish +
persistent +
semiterete +  and oblanceolate-clavate +
0.4 cm4 mm <br />0.004 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
toothed +, unlobed +  and lobed +
inferior +  and superior +
obconic +
biseriate +  and clustered +
collateral +  and basal +
pyramidal +
0 (?) +  and 4 (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
free +  and distinct +
Flowering (Apr–)May–Jun(–Aug). +
adnate +, free +, connate +  and distinct +
in W. H. Brewer et al., Bot. California +
hirtellous +  and glabrous +
cylindric +
reduced +
not arillate +
persistent +
free +  and distinct +
spreading +, erect +  and reflexed +
broadly ovate +  and semiorbiculate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
glabrous +, pilose +  and hirtellous +
Illustrated +
hirtellous +  and glabrous +
cylindric +
reduced +
free +  and distinct +
grooved +  and branched +
0.65 cm6.5 mm <br />0.0065 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hirtellous-pilose +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
spreading +  and erect-ascending +
1 +  and 10 +
capitate +  and truncate +
adnate +  and free +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
pinkish +  and white +
not persistent +
distinct +
not elongate +
0.1 cm1 mm <br />0.001 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
Adenostoma fasciculatum var. obtusifolium +
Adenostoma fasciculatum +
variety +
inconspicuous +
erect-ascending +  and decumbent +