Chenopodium strictum
 
Late-Flowering Goosefoot

Lower Leaf Bottom

B-Say Tah Beach, Echo Lake
19-Aug-2019

I have identified this plant as C. strictum because of the shape of the leaf blades and seeds.  The presence of petioles on some leaves does not match the requirements of the Flora of North America and Diana Robson keys.  However, the Flora of North America illustration of this species appears to show some leaves with short petioles.

A key to all the Chenopodium species occurring in Saskatchewan is found here.  This key was derived from the key in the Flora of North America by removing all the non-Saskatchewan species. Another key to the Chenopodium species written by Diana Bizecki Robson is found here.

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Chenopodium: Answers to key questions in Budd's Flora and Flora of Alberta leading to this genus.  Not all the answers apply to all the species in Chenopodium, but they all do apply to strictum.   
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herbs, or low spineless shrubs; NOT [shrub with spiny branches, 1-2 m high]

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plants not prickly; NOT [plant prickly from the spine-tipped thread-like leaves and from bracts]

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stems not fleshy

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stems not jointed

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leaves mostly alternate; NOT [leaves opposite]

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leaves not reduced to scales

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leaves not circular in cross section

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NOT [flowers axillary and sunk into the fleshy stem]

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flowers not subtended by scarious bracts

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flowers lacking bracteoles; NOT [pistillate flowers with a pair of bracteoles, occasionally 3]

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calyx with 3-5 sepals; NOT [calyx with only one sepal]

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sepals greenish, herbaceous or fleshy; NOT [sepals scarious, dry and membranous]

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mature calyx without wings or spines; NOT [mature calyx with wings, or minute spines]

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flowers perfect

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at least some flowers with more than one stamen

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fruit enclosed; NOT [fruit largely exposed]

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fruit not winged; NOT [fruit narrowly winged]

 

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Amaranthaceae: Answers to key questions in Budd's Flora leading to this family.  Not all the answers apply to all the genera in Amaranthaceae, but they all do apply to Chenopodium
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herbs; NOT [shrubs or trees]

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land plants; NOT [water plants]

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plants not parasitic on trees, rooted in soil

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plants with more than one pair of leaves

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leaves alternate, lower ones sometimes opposite; NOT [leaves opposite]

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leaves without stipules; NOT [leaves with stipules free or sheathing the stem]

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leaves not compound and not very deeply divided; NOT [leaves compound or simple, but very deeply divided]

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leaves not orbicular or reniform; NOT [leaves orbicular or reniform]

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flowers small, numerous, greenish; NOT [flowers colored]

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flowers with only one floral ring, with sepals but not petals

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perianth segments 2-5; NOT [perianth segments 6]

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flowers perfect

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fruit dry when ripe; NOT [fruit fleshy when ripe]