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Atriplex canescens (Pursh) Nutt.
FOURWING SALTBUSH
Calligonum canescens Pursh; Four-wing saltbush

Life   Plantae   Dicotyledoneae   Chenopodiaceae   Atriplex

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Atriplex canescens
© Copyright Jennifer Larson 2012 · 2
Atriplex canescens
Atriplex canescens
© Copyright Jennifer Larson 2012 · 2
Atriplex canescens

Atriplex canescens, seed
© Copyright Seeds USID 2015 · 1
Atriplex canescens, seed

Associates · map
FamilyScientific name @ source (records)
Acanaloniidae  Acanalonia clypeata @ UDCC_TCN (1); UCR_ENT (1)
Aphididae  Brachyunguis ( @ CSCA_TCN (7)

Brachyunguis letrapteralis @ CSCA_TCN (2)
Cercopidae  Clastoptera lineatocollis @ UCR_ENT (1)
Cicadellidae  Erasmoneura variabilis @ UCR_ENT (1)

Exitianus exitiosus @ AMNH_PBI (2); UCR_ENT (2)

Idiocerus ( @ UCR_ENT (1)

Norvellina clarivida @ AMNH_PBI (2)

Scaphytopius ( @ UCR_ENT (1)

Stragania robusta @ UCR_ENT (37)
Diatrypaceae  Eutypella herbicola @ BPI (1)
Dictyopharidae  Orgerius concordus @ UCR_ENT (1)

Scolops viridis @ UDCC_TCN (4); AMNH_IZC (1)
Eriococcidae  Eriococcus barri @ CSCA_TCN (1)

Eriococcus eriogoni @ CSCA_TCN (2)

Eriococcus euphorbiae @ CSCA_TCN (2)
Leptosphaeriaceae  Coniothyrium @ 367245A (1); 367245B (1)
Lygaeidae  Malezonotus sodalicius @ UCR_ENT (1)
Miridae  Coquillettia venusta @ AMNH_PBI (1)

Coridromius chenopoderis @ AMNH_PBI (20)

Deraeocoris brevis @ AMNH_ENT (1)

Hadronema sinuatum @ AMNH_PBI (26)

Lopidea picta @ AMNH_IZC (3)

Lopidea scutata @ AMNH_PBI (3); AMNH_ENT (3)

Lygus elisus @ AMNH_PBI (2); AMNH_IZC (13)

Lygus @ AMNH_PBI (8)

Megalopsallus humeralis @ AMNH_PBI (2)

Megalopsallus nigrofemoratus @ AMNH_PBI (53)

Megalopsallus punctipes @ AMNH_PBI (4)

Megalopsallus schwartzi @ AMNH_PBI (1)

Megalopsallus sparsus @ AMNH_PBI (22); UCR_ENT (59)

Megalopsallus @ AMNH_PBI (24)

Oncotylus guttulatus @ AMNH_IZC (2); AMNH_PBI (1)

Orthotylus atriplicis @ AMNH_PBI (15)

Orthotylus stitti @ AMNH_PBI (2)

Parthenicus atriplicis @ AMNH_PBI (4)

Parthenicus cuneotinctus @ AMNH_PBI (6)

Parthenicus @ AMNH_PBI (21)

Phytocoris consors @ AMNH_PBI (6); AMNH_ENT (101)

Phytocoris cuneotinctus @ AMNH_PBI (4); AMNH_ENT (38)

Phytocoris geniculatus @ AMNH_ENT (1)

Phytocoris hirsuticus @ AMNH_ENT (2)

Phytocoris minituberculatus @ AMNH_ENT (1)

Phytocoris olseni @ AMNH_ENT (1)

Phytocoris pulchricollis @ AMNH_ENT (2)

Phytocoris reticulatus @ AMNH_ENT (1)

Pseudopsallus puberus @ AMNH_PBI (1)

Pseudopsallus repertus @ AMNH_ENT (1)
Ortheziidae  Orthezia annae @ CSCA_TCN (1)
Pentatomidae  Tepa yerma @ UCR_ENT (6)
Pseudococcidae  Anisococcus imperialis @ CSCA_TCN (4)

Humococcus atriplicis @ CSCA_TCN (2)

Phenacoccus pauperatus @ CSCA_TCN (3)
Pucciniaceae  Uromyces shearianus @ BPI (4)
Rhopalidae  Aufeius impressicollis @ UCR_ENT (1)
Teichosporaceae  Teichospora mammoides @ BPI (1)

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FNA | Family List | FNA Vol. 4 | Chenopodiaceae | Atriplex

61. Atriplex canescens (Pursh) Nuttall, Gen. N. Amer. Pl. 1: 197. 1818.

Four-wing saltbush

Calligonum canescens Pursh, Fl. Amer Sept. 2: 370. 1814; Atriplex nuttallii S. Watson

Shrubs, dioecious or rarely monoecious, mainly 8-20 dm, as wide or wider, not especially armed. Leaves persistent, alternate, sessile or nearly so, blade linear to oblanceolate, oblong, or obovate, mainly 10-40 × 3-8 mm, margin entire, apex retuse to obtuse. Staminate flowers yellow (rarely brown), in clusters 2-3 mm wide, borne in panicles 3-15 cm. Pistillate flowers borne in panicles 5-40 cm. Fruiting bracteoles 8-25 mm, as wide, on stipes 1-8 mm, with 4 prominent wings extending the bract length, united throughout, wings dentate to entire, apex toothed, surface of wings and body smooth or reticulate. Seeds 1.5-2.5 mm wide. 2 n = 18, 36+.

This species forms hybrids with Atriplex confertifolia and A . gardneri varieties (see var. bonnevillensis ). Materials from the vicinity of the type locality of the species in South Dakota are low subherbaceous plants that differ from our shrubby tall material. However, the type area is presently covered with water from a dam on the Missouri River, and it is not possible to exclude the possibility of A. canescens as it has been interpreted for the past century to have existed at that site during the Lewis and Clark Expedition, if that is indeed where the lectotype was collected.

Varieties 4 (4 in the flora): w North America, Mexico.

Nuttall's new combination Atriplex canescens was based on Calligonum canescens Pursh. Watson based his new name A. nuttallii directly on A. canescens Nuttall, i.e., including the citation of Nuttall's "Genera, 1. 197," and on its basionym, C. canescens . The name A. nuttallii is thus a nomenclatural synonym of A. canescens and was thus illegitimate at its inception. It cannot be resurrected by even the most sophisticated arguments. A sheet of Atriplex canescens , noted as "a shrub," taken by Nuttall on the 1810 Missouri River expedition is extant in the Lambert herbarium (PH). It bears several, obviously shrubby, staminate flowering branches, but the only pistillate branch is very immature. The name A. gardneri , also cited provisionally by Watson within the concept of A. nuttallii , clearly has priority over other names for that widely distributed species complex. Attempts at leptotypification of the name nuttallii by J. McNeill et al. (1983) and H. C. Stutz and S. C. Sanderson (1998) are both superfluous, the name being illegitimate.

C. A. Hanson (1962) noted the similarity between the occasional wingless fruiting bracteoles of Atriplex canescens and A. gardneri var. falcata . He noted further that the bracts of both species lack lateral teeth subtending the terminal ones, have terminal teeth united half their length, and have indurate bracts. Whether such similarity indicates relationship or mere coincidence is open to question. However, A. canescens is known to form hybrids with most, if not all, portions of the gardneri complex and with other woody species whose range it overlaps as well.

SELECTED REFERENCE

Stutz, H. C. and S. C. Sanderson. 1979. The role of polyploidy in the evolution of Atriplex canescens . In: J. R. Goodin and D. K. Northington, eds. 1929. Arid Plant Resources.... Lubbock. Pp. 615-621.

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Updated: 2018-02-18 04:06:22 gmt
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