Atriplex klebergorum |
Atriplex tularensis |
|
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Kleberg orach, Kleberg's saltbush |
Bakersfield smallscale, Tulare orach, Tulare saltbush |
|
Habit | Herbs, with ligneous vertical taproot 5–9 mm thick; bark pale. | Herbs, erect, simple or sparingly branched, 1.5–4(–10) dm, white scurfy. |
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. |
aging red, terete or obscurely angled, brittle. |
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. |
alternate or proximalmost opposite; blade lanceolate to ovate, 6–20 × 4–8 mm, base rounded, margin entire, apex acute to acuminate, gray scurfy. |
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. |
in small axillary dense glomerules, 4-merous. |
Pistillate flowers | densely farinose; bracteoles adnate to ovary. |
solitary or in small axillary clusters, below or mixed with staminate. |
Seeds | dark reddish brown, round-lenticular, 1.5 mm wide, shining; radicle superior. |
dark brown, 1–1.2 mm. |
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. |
bracteoles sessile, rhombic-ovate, acute or acuminate, 2.5–3.5 × 2.2–3 mm, united to middle, thin margin toothed, faces plane, scurfy. |
Atriplex klebergorum |
Atriplex tularensis |
|
Phenology | Flowering summer. | Flowering summer–fall. |
Habitat | In silty or clay loam soils | Alkaline plains, edges of alkali sink |
Elevation | 90-200 m (300-700 ft) | |
Distribution |
TX; of conservation concern; near sea level |
CA |
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.) |
Of conservation concern. H. M. Hall and F. E. Clements (1923) discussed the relationship of this plant to Atriplex cordulata, noting that, “A. tularensis is a much more slender plant, the leaves are narrower in proportion to their length,” and tapering to the base, never at all cordate. They noted further, that “The fruiting bracts are sometimes very similar in shape, but those of tularensis typically end in an abrupt acute tooth not present in cordulata and both bract and seed are always smaller.” Because of its small fruiting bracteoles it was placed within the Pusillae by P. C. Standley (1916). The erect stature, coupled with distinctive spreading-ascending and stiff (at least in dried material) leaves, and foliose bracts apparently distinguish A. tularensis from A. coronata. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 4, p. 353. | FNA vol. 4, p. 359. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. cordulata var. tularensis, Obione tularensis | |
Name authority | M. C. Johnston: SouthW. Naturalist 6: 49. (1961) | Coville: Contr. U.S. Natl. Herb. 4: 182, plate 19. (1893) |
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