Persicaria FNA Key - Sask
The following key was created as follows:
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Started with key to Polygonum species in the Flora of North America (FNA) |
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Removed all species not found in Saskatchewan according to FNA distribution maps. |
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Added rarity/abundance information, also taken from Harms. CC - very common, C - common, FC - fairly common, UC - uncommon, VUL - vulnerable, THR - threatened, END - endangered, ADV? - possibly adventive, R - rare (applies to introduced species only). |
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Added common names. |
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Linked species name to species description in Flora of North America |
The Persicaria genus is divided into sections. All Saskatchewan species belong to section Persicaria.
1. Some or all ocreae foliaceous and green
distally. Persicaria
amphibia (in part) C
All ocreae chartaceous and hyaline, tan,
brown, or reddish brown throughout, never foliaceous and green distally.
(2)
2. Perianths glandular-punctate. (3)
Perianths not glandular-punctate. (4)
3. Outer tepals with anchor-shaped veins;
achenes discoid. Persicaria
lapathifolia (in part) C
Outer tepals without anchor-shaped veins; achenes
3-gonous or biconvex. Persicaria
punctata THR
4. Peduncles stipitate-glandular. (5)
Peduncles not stipitate-glandular. (6)
5. Plants perennial; rhizomes or stolons
usually present; inflorescences terminal. Persicaria
amphibia (in part) C
Plants annual; rhizomes and stolons
absent; inflorescences terminal and axillary. Persicaria
lapathifolia (in part) C
6. Plants perennial; rhizomes or stolons
usually present. Persicaria
amphibia (in part)
C
Plants annual; rhizomes and stolons
absent. (7)
7. Margins of ocreae without bristles or with
bristles to 1 mm; ocreolae mostly overlapping; achenes discoid, rarely
3-gonous. Persicaria
lapathifolia (in part) C
Margins of ocreae ciliate with bristles
(0.2-)1-12 mm, if bristles less than 1 mm then ocreolae not overlapping; achenes
discoid, biconvex, or 3-gonous. Persicaria
maculosa R/ADV?