Adenostoma sparsifolium

Torrey in W. H. Emory

in W. H. Emory, Not. Milit. Reconn., 140. 1848.

Common names: Red shank ribbon bush
Treatment appears in FNA Volume 9. Treatment on page 394. Mentioned on page 393.

Plants erect, 20–60 dm. Stems erect to spreading; bark distinctively cinnamon-colored, papery-layered; young stem internodes yellowish green, 1.5–7 (–15) mm (marked with slender paired decurrent grooves), finely hirtellous, sessile-glandular. Leaves on slender long-shoots, proximal 1–2 opposite, distal subalternate or alternate; stipules absent; blade yellow-green, linear to terete, (2.5–) 5–14 (–26) × 0.4–0.6 (–0.8) mm, apex recurved-apiculate, surfaces sparsely hirtellous and sessile-glandular. Inflorescences paniculate or reduced to spicate racemes (terminating all distal, long-shoots of season), 0.8–5 (–7.5) cm, hirtellous; subtending flower bracts linear-subulate; bracteoles 5 or 6, outermost subulate, inner oblong-ovate, concave. Pedicels present or absent. Flowers in sessile clusters of 2–3 (or single and pedicellate); hypanthium greenish, 0.6–2 mm, hirtellous, inner rims yellowish; sepals broadly ovate, 0.6–1 mm; petals persistent, whitish, turning rusty brown, elliptic to ovate, 1.5–2.2 mm; stamens 10 (–12), filaments 1–1.5 mm, anthers 0.4–0.6 mm; ovaries obliquely obovoid; styles erect, pinkish, 0.5–1 mm. Achenes ellipsoid, 1.1–1.6 mm, exserted from hypanthium. 2n = 18.


Phenology: Flowering Jul–Aug(–Sep).
Habitat: Dry granitic slopes, mesas, ravines, chaparral, pinyon woodlands
Elevation: 200–2000 m

Distribution

V9 660-distribution-map.jpg

Calif., Mexico (Baja California)

Discussion

Adenostoma sparsifolium is known in southern California from San Luis Obispo and Santa Barbara to Riverside and San Diego counties, and in northern Baja California.

Selected References

None.

Lower Taxa

None.
... more about "Adenostoma sparsifolium"
sessile-glandular +  and glabrous +
ellipsoid +
1.1mm +  and 1.6mm +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
recurved-apiculate +
William Jones +  and James Henrickson +
Torrey in W. H. Emory +
papery-layered +
cinnamon-colored +
compound +  and simple +
opposite +  and alternate +
persistent +
1.4 cm14 mm <br />0.014 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
yellow-green +
0.5 cm5 mm <br />0.005 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
linear +  and terete +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
? (?) +  and ? (?) +
0.4mm +  and 0.6mm +
inner +  and outermost +
concave +, oblong-ovate +  and subulate +
sericeous +  and glabrous +
opposite +  and alternate +
mature +  and juvenile +
1-2-pinnatifid +
Red shank +  and ribbon bush +
alternate +  and subalternate +
Calif. +  and Mexico (Baja California) +
not +  and aggregated +
200–2000 m +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
linear-subulate +
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 />) +
Dry granitic slopes, mesas, ravines, chaparral, pinyon woodlands +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
5 cm50 mm <br />0.05 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (5 cm50 mm <br />0.05 m <br />) +
crassinucellate +
red brownish +
opposite +  and alternate +
persistent +
toothed +, unlobed +  and lobed +
inferior +  and superior +
obovoid +
biseriate +  and clustered +
collateral +  and basal +
pyramidal +
0 (?) +  and 4 (?) +
persistent +
free +  and distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
Flowering Jul–Aug(–Sep). +
adnate +, free +, connate +  and distinct +
in W. H. Emory, Not. Milit. Reconn., +
hirtellous +  and glabrous +
cylindric +
reduced +
not arillate +
persistent +
free +  and distinct +
spreading +, erect +  and reflexed +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
glabrous +, pilose +  and hirtellous +
hirtellous +  and glabrous +
cylindric +
reduced +
free +  and distinct +
grooved +  and branched +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
erect +  and spreading +
1 +  and 10 +
capitate +  and truncate +
adnate +  and free +
not persistent +
distinct +
not elongate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Adenostoma sparsifolium +
Adenostoma +
species +
inconspicuous +