Tetraneuris acaulis
Tetraneuris herbacea
perky sue, stemless four-nerve daisy, stemless hymenoxys, stemless woollybase
eastern fournerve daisy
± branched, branches notably thickened distally.
± branched, branches notably thickened distally.
1–35(–60), erect, unbranched.
1–10, erect, unbranched.
all basal, new leaves tightly clustered;
blades spatulate or oblanceolate to linear-oblanceolate, entire, glabrous or ± hairy, often lanuginose, sericeous, or strigoso-canescent, eglandular or ± gland-dotted.
all basal, new leaves tightly clustered;
blades spatulate or oblanceolate to linear-oblanceolate, entire, glabrous or sparsely to rarely moderately hairy, moderately to densely gland-dotted.
0.5–30 cm, ± hairy.
5–35 cm, ± hairy proximally, densely hairy distally.
7–12 × 8–16 mm.
10–15 × 12–20 mm.
8–15(–21);
corollas 9–19 mm.
14–27;
corollas 11.8–20 mm.
25–200+;
corollas yellow, 2.7–4.3 mm.
50–100+;
corollas yellow, 3.4–4 mm.
6–12, 3.9–9(–11.5) mm, margins 0–0.4 mm wide, sometimes slightly scarious, abaxial faces ± hairy.
8–12, 5–7.5 mm, margins 0–0.2 mm wide, sometimes slightly scarious, abaxial faces ± hairy.
1–35(–60) per plant, borne singly.
1–10 per plant, borne singly.
2–4 mm;
pappi of 5–8 obovate to oblanceolate, aristate scales 2.2–3.7 mm.
2.4–3.4 mm;
pappi of 4–7 obovate, usually non-aristate scales 1.9–2.2 mm.
= 28.
Tetraneuris acaulis
Tetraneuris herbacea
Varieties 4 (4 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Tetraneuris herbacea is in the Center for Plant Conservation’s National Collection of Endangered Plants.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaves sparsely to densely hairy, often lanuginose, sometimes sericeous, not strigoso-canescent; peduncles 0.5–8(–12) cm; outer phyllaries 6.8–9(–11.5) mm; growing at (2100–)3000–3900 m | var. caespitosa |
1. Leaves sparsely to densely hairy, often strigoso-canescent; peduncles (1–)5–20(–30) cm; outer phyllaries 4–7.5 mm; growing at 700–2900(–3500) m | → 2 |
2. Leaf blades usually densely, sometimes sparsely, strigoso-canescent; e of continental divide (except for 2 reports from nw Idaho) | var. acaulis |
2. Leaf blades glabrous or sparsely to moderately to sometimes densely hairy, not strigoso-canescent; w of continental divide | → 3 |
3. Leaf blades glabrous or usually sparsely to moderately or sometimes densely hairy, densely gland-dotted; n Arizona, se California, w Colorado, s Idaho, e Nevada, Utah | var. arizonica |
3. Leaf blades glabrous or sparsely to moderately hairy, at least some (usually most or all) eglandular or sparsely gland-dotted; w Colorado, c, ne Utah, and sw Wyoming | var. epunctata |
CalFlora
KS Wildflowers
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
IL Wildflowers
