Atriplex klebergorum |
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Kleberg orach, Kleberg's saltbush |
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Habit | Herbs, with ligneous vertical taproot 5–9 mm thick; bark pale. |
Stems | erect, diffuse; branches alternate, numerous, horizontal or distally ascending, terete, 1.5–4 dm, densely white farinose when young, glabrate in age; bark becoming pale brownish white and flaky; internodes mostly shorter than 1(–2.4) cm. |
Leaves | alternate, proximalmost subopposite, sessile; blade ovate-deltoid, 0.5–1.5(–2.5) × 5–12(–15) mm, rather firm and flat, base rounded, truncate, or slightly clasping, margin entire or toothed, apex acute, very densely canescent-farinose with a greenish yellow tinge. |
Flowers | sessile, axillary, inconspicuous, mostly in leafy lateral branches with extremely short internodes, arising toward tips of secondary branches. |
Staminate flowers | in most distal axils, 2 mm wide; sepals 3–5, mostly hyaline, curved elliptic, 1.5–1.7 mm, mucronulate, farinose dorsally. |
Pistillate flowers | densely farinose; bracteoles adnate to ovary. |
Seeds | dark reddish brown, round-lenticular, 1.5 mm wide, shining; radicle superior. |
Fruiting | bracteoles variably and irregularly 3–7-cleft, ovate-orbicular, 3.1–4.7 × (3.2–)4–7 mm, typically somewhat constricted below middle, with terminal lobes (1–)1.5–2.8 mm, densely scurfy, faces doubly cristate or smooth. |
Atriplex klebergorum |
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Phenology | Flowering summer. |
Habitat | In silty or clay loam soils |
Distribution |
TX; of conservation concern; near sea level |
Discussion | Of conservation concern. The species was noted by its author as apparently belonging in sect. Argenteae Standley; I concur with that alignment. The overall shape of the bracteoles with a subterminal constriction is reminiscent of those of Atriplex powellii, but the bracteole shape is otherwise distinctive, and the long marginal teeth and occasional elongate cristate processes on the faces are unmatched elsewhere in the Argenteae. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 4, p. 353. |
Parent taxa | |
Sibling taxa | |
Name authority | M. C. Johnston: SouthW. Naturalist 6: 49. (1961) |
Web links |