Lorandersonia spathulata

(L. C. Anderson) Urbatsch, R. P. Roberts & Neubig

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.
... more about "Lorandersonia spathulata"
Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
(L. C. Anderson) Urbatsch, R. P. Roberts & Neubig +
Chrysothamnus spathulatus +
Guadalupe rabbitbrush +
N.Mex. +  and Tex. +
1700–2200 m +
Loamy soils in pinyon, juniper, and oak woodlands +
Flowering late summer–fall. +
Compositae +
Lorandersonia spathulata +
Lorandersonia +
species +