Tetraneuris linearifolia
fineleaf fournerve daisy, slimleaf actinea
none.
1–10, erect or ± decumbent, leafy, unbranched or branched distally.
basal and cauline, ± hairy, ± gland-dotted;
basal blades spatulate to oblanceolate, entire or with 2–6 teeth or lobes;
proximal cauline blades narrowly spatulate or oblanceolate to linear-oblanceolate, entire or with 2–6 teeth or lobes;
mid blades oblanceolate to linear-oblanceolate to linear, 0.9–9.5(–16) mm wide, entire or with 1–2 teeth or lobes;
distal blades narrowly oblanceolate to linear-oblanceolate to linear, entire or with 1–2 teeth or lobes.
8–29 cm, ± hairy.
5–10 × 7–15 mm.
9–25;
corollas 8.2–16.8 mm.
50–200+;
corollas yellow, 1.6–3 mm.
8–21, 2.4–5.5 mm, margins 0–0.2 mm wide, not scarious or scarious, abaxial faces ± hairy.
8–50(–80) per plant, borne singly or in corymbiform arrays.
1.5–2.6 mm;
pappi of 4–8 obovate, often aristate scales 1–2.5 mm.
Tetraneuris linearifolia
Varieties 2 (2 in the flora).
Plants of Tetraneuris linearifolia morphologically intermediate between the two varieties are found in Bee, Duval, Live Oak, and McMullen counties, Texas.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stems erect, branched distally; leaves ± hairy, basal blades entire or with 2(–6) teeth or lobes, proximal cauline blades entire or with 1–2 teeth or lobes, mid blades (0.9–)1.4–3(–4.8) mm wide; involucres (7–)8–11(–12) mm diam.; pappus scales aristate; Kansas, New Mexico, Oklahoma, Texas, on limestone-derived soils | var. linearifolia |
1. Stems erect or ± decumbent, ± branched distally; leaves usually densely hairy, basal blades with 2–6 teeth or lobes, proximal cauline blades with 2(–6) teeth or lobes, mid blades (2.5–)3.9–9.5(–16) mm wide; involucres 12–15 mm diam.; pappus scales not aristate; s Texas on sand | var. arenicola |
KS Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
