Lechea stricta
Lechea pulchella
prairie pinweed
Leggett's pinweed
basal produced; flowering erect, 25–45 cm, densely sericeous.
basal produced; flowering erect, 25–80 cm, sparsely sericeous, glabrescent.
of flowering stems alternate or subopposite;
blade narrowly oblanceolate, 13–20 × 1.5–3 mm, apex acute, often mucronate, abaxial surface pilose, adaxial glabrous.
of flowering stems opposite or subopposite;
blade linear to narrowly elliptic, 15–30 × 1.5–3 mm, apex acute, indurate, abaxial surface hairy on midvein and, sometimes, margins, adaxial glabrous.
1 per axil, 1.6–2 mm.
1 per axil, 1–2.3 mm.
calyx 1.6–1.8 mm, outer sepals shorter than inner.
calyx 1.4–2 mm, outer sepals shorter than inner.
subglobose to broadly ovoid, (1.8–)2–2.5 × 2–2.5 mm, ± equaling calyx.
subglobose, 1.5–2.2 × 1.3–1.6 mm, longer than calyx.
3–4.
2 or 3(4).
Lechea stricta
Lechea pulchella
Some individuals of Lechea stricta can be difficult to determine with certainty; the extremes of variation of L. stricta often grade into that of L. intermedia and L. pulchella.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 3 (3 in the flora).
Intergradation among the varieties of Lechea pulchella in areas of overlap is common (B. A. Sorrie and A. S. Weakley 2007b). Some authors (K. Barringer 2004; R. L. Wilbur 1966) have not recognized infraspecific taxa.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Capsules crowded-racemose to tightly clustered at branch tips; pedicels shorter than calyx. | var. pulchella |
1. Capsules loosely racemose; pedicels ± equaling or longer than calyx | → 2 |
2. Seeds (2–)3(–4); calyces reddish purple at maturity, 1.7–2 mm. | var. moniliformis |
2. Seeds 2(–3); calyces greenish purple at maturity, 1.6–1.8 mm. | var. ramosissima |
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