Chenopodiastrum simplex (Torrey) S. Fuentes, Uotila
& Borsch, comb. nov.
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Etymology:
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Simple, unbranched |
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Synonyms:
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Chenopodium simplex (Torrey) (Rafinesque
Chenopodium gigantospermum Aellen Chenopodium hybridum auct. non L. Chenopodium hybridum L. ssp. gigantospermum (Aellen) Hultén Chenopodium hybridum L. var. gigantospermum (Aellen) Rouleau Chenopodium hybridum L. var. simplex Torr. h |
Treatment: |
Stems erect, branched, 3-15 dm, glabrous. Leaves nonaromatic; petiole 0.15-0.45 cm; blade ovate to triangular, 3.5-15 × 2-9 cm, base cordate to truncate, margins sinuate -dentate with 1-5 coarse, acute teeth, distal leaves entire or with few small teeth, apex acute, glabrous. Inflorescences glomerules in terminal and lateral spikes and panicles, 6-15 cm; glomerules irregularly globose, flowers in different stages of development, 0.5-2 mm diam.; bracts absent. Flowers: perianth segments 5, connate into 0.5 mm tube; lobes ovate to lanceolate, 0.7-1 × 0.4-0.6 mm, apex retuse, slightly keeled, glabrous, margins meeting or separated by as much as their width, exposing more than 1/2 fruit at maturity; stamens 5; stigmas 2, 0.1 mm. Achenes depressed-ovoid; pericarp adherent, chartaceous, smooth. Seeds lenticular, 1.3-1.9 mm diam.; seed coat black, indistinctly honeycombed to nearly smooth, margins rounded. 2n = 18. |
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 CAS 637515 |
 CAS 637530 |
 CAS 637531 |
 CAS 900834 |
 CAS 972600 |
 CAS 637530 |
 CAS 900834 |
 DS 257897 |