Lorandersonia spathulata

(L. C. Anderson) Urbatsch

Sida 21: 1625. 2005.

Common names: Guadalupe rabbitbrush
Endemic
Basionym: Chrysothamnus spathulatus L. C. Anderson Madroño 17: 226, fig. 2f. 1964
Treatment appears in FNA Volume 20. Treatment on page 181. Mentioned on page 177, 178.

Shrubs, 70–150 cm. Stems ascending to erect, greenish when young, becoming tan to gray, fastigiately branched proximally (± angled from leaf-bases), finely scabrous, eglandular. Leaves ascending; blades sometimes appressed, midnerves plus 2 fainter collateral nerves evident, oblanceolate to spatulate, 25–50 × 1–3 mm, flat, margins scabrellous, apices acute to acuminate, faces scabridulous. Heads in corymbiform arrays, clusters to 5 cm wide. Involucres turbinate to subcylindric, 5–7.2 × 1.5–2.3 mm. Phyllaries 13–16 in 3–4 series, in weak vertical ranks, mostly tan, midnerves evident throughout, slightly keeled or convex, elliptic to lanceolate, 0.8–6 × 0.7–1.2 mm, unequal, margins narrowly scarious, entire, apices acute to acuminate, outer often subapically thickened and ± herbaceous, faces glabrous. Receptacles without scales. Ray-florets 0. Disc-florets 4–5; corollas 4–5 mm, glabrous, lobes 1.5–2.5 mm; style-branches exserted, 1.8–3 mm, appendages attenuate, 0.9–1.6 mm. Cypselae tan, narrowly obovate, 2–3 mm, 4–6 ribbed, faces sparsely hairy; pappi whitish tan, 3–4 mm. 2n = 18.


Phenology: Flowering late summer–fall.
Habitat: Loamy soils in pinyon, juniper, and oak woodlands
Elevation: 1700–2200 m

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Lorandersonia spathulata"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
indeterminate +  and determinate +
rounded +
Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
(L. C. Anderson) Urbatsch +
decurrent +
Chrysothamnus spathulatus +
linear;oblong or lanceolate +
rugulose +  and muricate +
subequal +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
evident +  and fainter +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Guadalupe rabbitbrush +
not 2-lipped +  and actinomorphic +
pale +  and dark yellow +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
4 +  and 6 +
fertile +  and bisexual +
fertile +  and bisexual +
N.Mex. +  and Tex. +
1700–2200 m +
resinous +
gland-dotted +
hairy +  and glabrous +
scabridulous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Loamy soils in pinyon, juniper, and oak woodlands +
indeterminate +
heterogamous +  and homogamous +
0 cm0 mm <br />0 m <br /> (5 cm50 mm <br />0.05 m <br />) +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.72 cm7.2 mm <br />0.0072 m <br />) +
turbinate;subcylindric +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
petiolate +  and sessile +
spreading;recurved +
lanceolate +  and triangular +
scabrellous +
0.8mm +  and 6mm +
convex elliptic +  and lanceolate +
0.7mm +  and 1.2mm +
2-carpellate +
whitish tan +
persistent +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering late summer–fall. +
ovate +  and oblong or lanceolate +
subequal +  and unequal +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
eglandular +  and branched +
resinous +
tan +  and gray +
ascending +  and erect +
attenuate +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Lorandersonia spathulata +
Lorandersonia +
species +
perennial +, biennial +  and annual +