Pedicularis centranthera
Pedicularis parviflora
dwarf lousewort, Great Basin lousewort
pédiculaire parviflore, small-flower lousewort
basal 6–8, blade elliptic or spatulate, 35–120 x 10–30 mm, undivided or 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or extensively overlapping distally, entire or 1- or 2-serrate, surfaces glabrous or scattered abaxial glands;
cauline 0–4, blade elliptic, sometimes lanceolate, 20–110 x 5–30 mm, 1- or 2-pinnatifid, margins of adjacent lobes overlapping distally, 1- or 2-serrate, surfaces glabrous.
basal 0–2, blade elliptic, 3–7 x 2–5 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, dentate, surfaces glabrous;
cauline 0–12, blade lanceolate or elliptic to deltate, 5–50 x 3–20 mm, 1- or 2-pinnatifid, margins of adjacent lobes nonoverlapping or slightly overlapping distally, serrate, surfaces glabrous.
simple, 1–4, not exceeding basal leaves, each 8–14-flowered;
bracts spatulate, 40–60 x 3–6 mm, undivided proximally, undivided or 1-pinnatifid distally, proximal margins entire, distal 1- or 2-serrate, surfaces glabrous, sometimes arachnoid along main veins.
simple or paniculate, 1–4, exceeding basal leaves, each 3–12-flowered;
bracts deltate to trullate, 5–30 x 3–15 mm, 1- or 2-pinnatifid, margins serrate, surfaces glabrous or slightly arachnoid.
1–5 mm.
1–2.5 mm.
calyx 17–22 mm, glabrous, lobes 5, narrowly triangular, 4–7 mm, apex entire or serrate, glabrous or ciliate;
corolla 28–40 mm, tube white or pale purple, 15–30 mm;
galea white or pale purple, apically sometimes dark violet to purple, 13–15 mm, beakless, margins entire medially and distally, apex arching over abaxial lip;
abaxial lip purple, 1–4 mm.
calyx 5.5–8 mm, glabrous, lobes 2(–4), deltate, 2–3.5 mm, apex pinnatifid, sometimes 2-fid into triangular lobes, entire, glabrous;
corolla 8–16 mm, tube light pink to purple, 5–11 mm;
galea purple, 3–6 mm, beakless, margins 1-toothed medially, entire distally, apex arching slightly over abaxial lip;
abaxial lip pink to purple, sometimes purple-spotted, 2–5 mm.
Pedicularis centranthera
Pedicularis parviflora
Varieties 2 (2 in the flora).
The leaves of Pedicularis centranthera exceed the inflorescence, giving the impression that the cauline leaves are basal. Proximalmost basal leaves are distinct: brown, membranous, and spatulate with undivided and entire margins. Pedicularis semibarbata has similar basal leaves.
Pedicularis centranthera occurs in evergreen forests, often under pinyon pine, juniper, ponderosa pine, and yellow pine.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Pedicularis parviflora belongs to a complex of taxa [including P. parviflora var. macrodontis (Richardson) S. L. Welsh, and P. pennellii] that have traditionally been treated as species, subspecies, or varieties. Two features unite this group: a highly branched paniculate raceme and a tooth on each medial margin of the galea covered with pyriform glands on the inner surface. Lack of apical teeth sets P. parviflora apart from P. palustris and P. pennellii, which have both sets of teeth.
The distinction of Pedicularis macrodontis is not clear. With a galea that lacks apical teeth, it is clearly associated with P. parviflora, but there are no unique characters to set it apart as a distinct species; all foliar and floral features are very similar. A number of intermediate specimens were seen, suggesting a lack of reproductive barriers; treatment as a variety of P. parviflora, following S. L. Welsh (1974), may be warranted, but further research is required before recognizing it as a taxon.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Bracts arachnoid and/or margins ciliate. | var. centranthera |
1. Bracts glabrous. | var. exulans |
CA
OR
Flora NW
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
BC
