Lorandersonia baileyi

(Wooton & Standley) Urbatsch

Sida 21: 1621. 2005.

Common names: Bailey’s rabbitbrush
Basionym: Chrysothamnus baileyi Wooton & Standley Contr. U.S. Natl. Herb. 16: 181. 1913
Synonyms: Chrysothamnus pulchellus subsp. baileyi (Wooton & Standley) H. M. Hall & Clements
Treatment appears in FNA Volume 20. Treatment on page 178. Mentioned on page 179.

Shrubs, 25–70 cm. Stems single, greenish when young, becoming whitish to gray, fastigiately branched distal to middle (angled from leaf-bases), glabrous or puberulent. Leaves ascending to appressed; blades linear or linear-oblong, 4–35 × 0.5–3 mm, flat or adaxially concave, margins ciliolate, midveins evident, often purplish, apices acute to acuminate, faces glabrous. Heads usually in cymiform to corymbiform arrays 0.5–7 cm wide, sometimes borne singly. Involucres obconic to cylindric, 10–15 × 4–6 mm. Phyllaries 20–25 in 4–5 series, in 5 vertical ranks, mostly tan, shiny, with green subapical patch, midnerves mostly evident on distal 1/2, keeled, ovate to oblong or lanceolate, 1–10 × 0.8–2.3 mm, unequal, mostly chartaceous, margins entire, narrowly scarious, apices acute to attenuate or acuminate, faces glabrous. Receptacles with 0–1 central awn ca. 0.5 mm. Ray-florets 0. Disc-florets 5; corollas 9–14 mm, glabrous, lobes 1–1.7 mm; style-branches exserted, 4.1–4.6 mm, appendages narrowly triangular, 2–2.8 mm. Cypselae brownish, turbinate, 5–7 mm, sharply 4-angled, 5–8 ribbed, faces sparsely or rarely densely hairy; pappi yellowish tan, 9–12 mm. 2n = 18 [as Chrysothamnus pulchellus].


Phenology: Flowering late summer–fall.
Habitat: Open high plains, especially in sandy sites
Elevation: 1300–2400 m

Distribution

V20-388-distribution-map.gif

Ariz., Colo., Kans., N.Mex., Okla., Tex., Utah, Mexico (Chihuahua), Mexico (Coahuila)

Discussion

Lorandersonia baileyi is often treated as a subspecies of L. pulchella. Phylogenetic analyses (R. P. Roberts and L. E. Urbatsch 2004) indicate that the two are not sister taxa.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Lorandersonia baileyi"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
triangular +
cymiform +  and corymbiform +
indeterminate +  and determinate +
rounded +
0.5cm +  and 7cm +
Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
(Wooton & Standley) Urbatsch +
decurrent +
Chrysothamnus baileyi +
0.4 cm4 mm <br />0.004 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
concave;flat;linear-oblong;linear +
0.5mm;3mm +
rugulose +  and muricate +
subequal +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Bailey’s rabbitbrush +
not 2-lipped +  and actinomorphic +
pale +  and dark yellow +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
5 +  and 8 +
4-angled +  and turbinate +
fertile +  and bisexual +
fertile +  and bisexual +
Ariz. +, Colo. +, Kans. +, N.Mex. +, Okla. +, Tex. +, Utah +, Mexico (Chihuahua) +  and Mexico (Coahuila) +
1300–2400 m +
resinous +
gland-dotted +
hairy +  and glabrous +
pustulate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open high plains, especially in sandy sites +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
obconic;cylindric +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
petiolate +  and sessile +
spreading;recurved +
lanceolate +  and triangular +
1mm +  and 10mm +
ovate +  and oblong or lanceolate +
0.8mm +  and 2.3mm +
2-carpellate +
yellowish tan +
persistent +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Flowering late summer–fall. +
ovate +  and oblong or lanceolate +
subequal +  and unequal +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
resinous +
whitish +  and gray +
erect +  and ascending +
Distal (?) +  and Middle (?) +
attenuate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Chrysothamnus pulchellus subsp. baileyi +
Lorandersonia baileyi +
Lorandersonia +
species +
perennial +, biennial +  and annual +