Chrysothamnus greenei

(A. Gray) Greene

Erythea 3: 94. 1895.

Common names: Greene’s rabbitbrush
IllustratedEndemic
Basionym: Bigelowia greenei A. Gray Proc. Amer. Acad. Arts 11: 75. 1876 (as Bigelovia)
Treatment appears in FNA Volume 20. Treatment on page 189. Mentioned on page 188.

Shrubs, 10–50 cm; with woody, moderately branched caudices, bark light gray, flaky to fibrous with age. Stems ascending, green becoming tan, glabrous, resinous. Leaves ascending to spreading; sessile; blades with faint midnerves, linear-filiform, 10–40 × 0.5–2 mm, flat or sulcate, sometimes twisted, margins glabrous or hirtellous, apices acute to apiculate, faces glabrous. Heads in densely cymiform arrays (4 cm wide), distal leaves reaching into but not overtopping arrays. Involucres cylindric to turbinate, 5–8 × 1.5–2.5 mm. Phyllaries 15–20 in 3–4 series, often in vertical ranks or spirals, mostly tan, ± greenish apically, midveins rarely visible, ovate or oblong to elliptic, 1.5–5 × 0.8–1.4 mm, unequal, mostly chartaceous, sometimes ± keeled, apices acuminate to cuspidate (cusp often recurved or falcate), faces glabrous or with a few long, crooked hairs proximally and near margins, resinous. Disc-florets 4–5; corollas 3.7–5.5 mm, lobes 0.8–1.5 mm; style-branches 2–2.4 mm (exserted beyond spreading corolla lobes), appendages 0.5–0.8 mm (shorter than stigmatic portion). Cypselae reddish-brown, turbinate, 3–4 mm, faces densely hairy; pappi tan, 3.7–5 mm. 2n = 18.


Phenology: Flowering summer–fall.
Habitat: Sandy washes, dry open places in desert
Elevation: 1300–2000 m

Distribution

V20-412-distribution-map.gif

Ariz., Calif., Colo., Nev., N.Mex., Utah, Wyo.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Chrysothamnus greenei"
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 +
(A. Gray) Greene +
light gray +
decurrent +
Bigelowia greenei +
twisted +  and sulcate +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
linear-filiform +
0.5mm;2mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
Greene’s rabbitbrush +
not 2-lipped +  and actinomorphic +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
reddish-brown +
turbinate +
fertile +  and bisexual +
Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +, Utah +  and Wyo. +
1300–2000 m +
resinous +
gland-dotted +
hairy +, with a few long , crooked hairs +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sandy washes, dry open places in desert +
in condensed cymiform clusters +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
cylindric;turbinate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
erect;spreading +
triangular +  and lanceolate +
hirtellous +  and glabrous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
keeled +, oblong +  and elliptic +
0.8mm;1.4mm +
2-carpellate +
persistent +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering summer–fall. +
greenish +  and tan +
lanceolate +  and ovate or obovate +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
Illustrated +  and Endemic +
resinous +
green becoming tan +
appendaged +  and truncate +
papillate +  and smooth +
Vanclevea +
Chrysothamnus greenei +
Chrysothamnus +
species +
campanulate +
perennial +, biennial +  and annual +