Atriplex gardneri var. welshii

(C. A. Hanson) S. L. Welsh

Great Basin Naturalist 44: 191. 1984.

Common names: Welsh’s saltbush
Endemic
Basionym: Atriplex welshii C. A. Hanson Stud. Syst. Bot. 1: 1. 1962
Treatment appears in FNA Volume 4. Treatment on page 373. Mentioned on page 372.

Subshrubs, dioecious or sparingly monoecious, mostly 1.5–5 × 1–8 dm. Stems prostrate to decumbent. Leaves tardily deciduous, alternate, sessile or subsessile; blade narrowly oblanceolate, 15–50 × 2–6 mm, 5–15 times longer than wide. Staminate flowers yellow, in glomerules 2–3 mm thick, in terminal spikes or panicles 3–11 cm Pistillate flowers in spikes to 25 cm. Fruiting bracteoles sessile or on stipes to 2 mm, body flattened or apparently subglobose, 6–9 × 5–8 mm, united to attenuated terminal tooth, with 2–6 lateral teeth. Seeds 2–2.5 mm wide. 2n = 18.


Phenology: Flowering spring–fall.
Habitat: Mat-atriplex and Castle Valley saltbush communities on Mancos Shale Formation
Elevation: 1200-1300 m

Discussion

This taxon forms occasional hybrids with Atriplex gardneri var. cuneata, with which it occurs.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

wingless +  and winged +
Stanley L. Welsh +
(C. A. Hanson) S. L. Welsh +
slippery +
aromatic +
cuneate +
Atriplex welshii +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
oblanceolate +
2mm;6mm +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
subglobose +  and flattened +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
3-5-parted +
Welsh’s saltbush +
1200-1300 m +
pistillate +  and staminate +
unisexual +  and bisexual +
not +  and connate +
enlarged +
2mm +  and 3mm +
Mat-atriplex and Castle Valley saltbush communities on Mancos Shale Formation +
bladderlike +
terminal +  and axillary +
subsessile +  and sessile +
deciduous +
not winged +  and winged +
toothed +  and lobed +
stipitate +  and sessile +
inferior +, half-inferior +  and superior +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
3 cm30 mm <br />0.03 m <br /> (11 cm110 mm <br />0.11 m <br />) +
persistent +  and deciduous +
(1-)3-5-lobed +
papery +  and chartaceous +
Flowering spring–fall. +
Great Basin Naturalist +
pointing +  and ascending +
sublateral +  and superior +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
verrucate +  and striate +
Brown (?) +  and Tan (?) +
flattened +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
cylindric +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
3 (?) +  and 5 (?) +
opposite +  and alternate +
prostrate +  and decumbent +
erect +, prostrate +  and ascending +
succulent +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Atriplex nuttallii subsp. gardneri +  and Atriplex nuttallii var. gardneri +
Atriplex gardneri var. welshii +
Atriplex gardneri +
variety +
spicate +  and naked +
spicate +  and naked +
tuberculate +
dicotyledonous +
perennial +  and annual +
monoecious +  and dioecious +
1dm +  and 8dm +