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|Family: Polygonaceae||View Description||Dichotomous Key|
|Genus: Polygonum||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Polygonum polygaloides Meisn.
Habit: Annual. Stem: erect, (2)6--20(25) cm, +- wiry, glabrous, green, +- angled, branches generally widely spreading (0). Leaf: basal leaves early-deciduous, distal abruptly reduced to bracts; ocreae 4--8 mm, glabrous, proximally cylindric, distally cut; petiole 0; blade 10--40 mm, 1--2.5 mm wide, narrowly linear, margin rolled under, smooth, tip acute or mucronate. Inflorescence: axillary, terminal, spike-like, +- spheric to cylindric; pedicels included, erect, 0--2 mm; flowers 1--3, in most axils or crowded distally. Flower: generally closed; perianth 1.5--3 mm, white to red, tube 19--40% of length, lobes overlapped, lance-oblong, +- keeled, tip acute to acuminate, midvein thickened, branches 2, proximal, or generally 0; stamens 3--8. Fruit: included, 1.3--2.5 mm, ovate to lanceolate, light-yellow or light- or green- to dark-brown, shiny or dull, smooth or net-like with longitudinal ridges.
Note: Highly variable; intermediates occur between all subspecies except Polygonum polygaloides subsp. polygaloides, of northwestern United States (except California), Alberta.
Unabridged Note: Alternatively, Polygonum polygaloides could be recognized in narrow sense, without infraspecific taxa, and the 3 subspecies in California could be treated as subspecies of a separate Polygonum kelloggii (earliest available name).
eFlora Treatment Author: Mihai Costea
Jepson Online Interchange
Previous taxon: Polygonum parryi
Next taxon: Polygonum polygaloides subsp. confertiflorum
Citation for this treatment: Mihai Costea 2016. Polygonum polygaloides, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=39261, accessed on September 26, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on September 26, 2016.