Chrysothamnus stylosus

(Eastwood) Urbatsch

Sida 21: 1627. 2005.

Common names: Resinbush
Endemic
Basionym: Grindelia stylosa Eastwood Proc. Calif. Acad. Sci., ser. 2, 6: 293. 1896
Synonyms: Vanclevea stylosa (Eastwood) Greene
Treatment appears in FNA Volume 20. Treatment on page 190. Mentioned on page 188, 191.

Shrubs, 40–120 cm; with woody, freely branched caudices (not readily differentiated from young shoots). Stems green when young, soon becoming tan to white or grayish with age (bark of older stems flaky), branched, resinous when young, less so with age. Leaves ascending to spreading, becoming deflexed; sessile; blades with conspicuous midnerves plus 1–2 pairs of collaterals often evident, lanceolate to linear-elliptic, falcate, 6–35 (–60) × 1–9 mm, often folded, margins sometimes undulate, apices acute, mucronate, ± spinulose, faces glabrous, ± gland-dotted, resinous. Heads usually in dense, cymiform arrays (to 7 cm wide), rarely borne singly, not overtopped by distal leaves. Involucres hemispheric, 8–12 × 9–15 mm. Phyllaries 40–60+ in 3–5 series, in spirals, mostly tan, ovate to lanceolate, unequal, 3–10 × 1–1.8 mm, greenish distally but scarcely herbaceous, apices acute or acuminate, often recurved, faces often glutinous. Disc-florets 30–40+; corollas 6–8.5 mm, lobes 1–1.7 mm; style-branches 2.8–3.5, appendages 1.3–1.7 mm. Cypselae tan, narrowly cylindric, 4–5 mm, glabrous or sparsely hairy, resinous; pappi of 12–15, white or stramineous, lanceolate to lance-linear scales 2–4 mm. 2n = 18.


Phenology: Flowering summer–fall.
Habitat: Canyonlands, dunes, in sandy soils, with 4-winged saltbush, ephedra, sand dropseed, blackbrush, and juniper
Elevation: 1100–1700 m

Discussion

Chrysothamnus stylosus has been treated previously in the monotypic genus Vanclevea.

Selected References

None.

Lower Taxa

None.
... more about "Chrysothamnus stylosus"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
(Eastwood) Urbatsch +
decurrent +
Grindelia stylosa +
compound +  and simple +
3.5 cm35 mm <br />0.035 m <br /> (6 cm60 mm <br />0.06 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
falcate;lanceolate;linear-elliptic +
1mm;9mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
Resinbush +
not 2-lipped +  and actinomorphic +
0.6 cm6 mm <br />0.006 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
hairy +  and glabrous +
cylindric +
fertile +  and bisexual +
Ariz. +  and Utah. +
1100–1700 m +
glutinous +  and resinous +
gland-dotted +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Canyonlands, dunes, in sandy soils, with 4-winged saltbush, ephedra, sand dropseed, blackbrush, and juniper +
in condensed cymiform clusters +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
erect;spreading +
triangular +  and lanceolate +
hirtellous +  and ciliate +
undulate +
2-carpellate +
stramineous +  and white +
persistent +
lanceolate +  and lance-linear +
Flowering summer–fall. +
greenish +  and tan +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
ovate +  and lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
exalbuminous +
resinous +
tan +  and white or grayish +
ascending +  and erect or spreading +
appendaged +  and truncate +
papillate +  and smooth +
Vanclevea stylosa +
Chrysothamnus stylosus +
Chrysothamnus +
species +
campanulate +
perennial +, biennial +  and annual +