margins entire or dentate (pinnately lobed or dissected), faces abaxially resin-gland-dotted, adaxially often tomentose. Heads discoid, in leafy-bracted
4 KB (379 words) - 20:49, 5 November 2020
subapical patch, midnerves evident on proximal 1/2 or throughout, subapical resin ducts 0 or slightly darker, thickened and expanded, (margins membranous,
4 KB (348 words) - 19:32, 6 November 2020
Stems ascending, green, soon becoming tan, glabrous or puberulent, sometimes resin-dotted, often resinous. Leaves ascending, spreading, or deflexed; sessile;
5 KB (397 words) - 19:25, 6 November 2020
usually densely strigose and gland-dotted, each margin usually with an adaxial resin gland; receptacles plus paleae and florets = discs, 5–70 × 5–18 mm). Ray
5 KB (342 words) - 21:09, 5 November 2020
hemispheric, paleate; paleae ± lanceolate, ± navicular (each with central resin duct). Ray florets 0. Disc florets mostly 60–250+, bisexual, fertile; corollas
3 KB (289 words) - 20:57, 5 November 2020
conic, paleate; paleae ± folded (carinate, each with central, red-brown resin duct). Ray florets 12–18+, neuter or styliferous and sterile; corollas orange
4 KB (352 words) - 20:56, 5 November 2020
apex rounded to nearly acute; stalk 1–3 mm; scales 2–3, equal, valvate, resin-coated. Leaf blade narrowly ovate to elliptic, base cuneate to narrowly rounded
4 KB (326 words) - 15:00, 29 February 2024
annual or perennial, not cushion- or mat-forming, aquatic, not succulent; resin canals obvious. Rhizomes absent; roots fibrous. Stems mostly submerged, ascending
3 KB (295 words) - 23:44, 5 November 2020
glabrous (pericarps with myxogenic cells in longitudinal rows, without resin sacs); pappi 0. x = 9. Introduced; s, w Europe, n Africa. Species 2 (2 in
4 KB (296 words) - 20:56, 5 November 2020
Disc florets (13–)20–70, bisexual, fertile; corollas yellow (with orange resin ducts), tubes 2 times longer than narrowly funnelform throats, lobes 5, erect
4 KB (398 words) - 21:05, 5 November 2020
cauline dentate or entire, faces loosely tomentose or glabrate, puberulent and resin-gland-dotted. Heads discoid, in (leafy-bracted) corymbiform or paniculiform
4 KB (378 words) - 20:49, 5 November 2020
long-hairy. Winter buds greenish yellow, glabrous or stiffly hairy, resinous (resin yellow, moderately fragrant); terminal buds (6–)8–15(–21) mm; flowering buds
10 KB (1,262 words) - 18:16, 6 November 2020
deltate (without resin sacs). Cypselae ± columnar, ribs 8–10 (not winged), faces probably glabrous (pericarps without myxogenic cells or resin sacs); pappi
3 KB (214 words) - 20:57, 5 November 2020
diam. Leaves with conspicuous, pitlike, abaxial gland that produces drop of resin, slightly glaucous. Pollen cones 2–3 × 2–2.5 mm; pollen sacs 3–5. Seed cones
2 KB (181 words) - 21:24, 5 November 2020
lance-deltate or lanceolate (not keeled abaxially, usually each with central resin canal), unequal, margins and apices scarious (tips of inner usually dilated)
3 KB (257 words) - 20:57, 5 November 2020
5, deltate (without resin sacs). Cypselae ± columnar, ribs 7–12, faces probably glabrous (pericarps without myxogenic cells or resin sacs); pappi 0 (cypselar
3 KB (247 words) - 20:57, 5 November 2020
spinose-toothed; all with apices rounded to acute, faces glabrous or glabrate, resin-gland-dotted. Heads pseudo-radiant (see here at corollas), ± pedunculate
3 KB (239 words) - 20:50, 5 November 2020
rounded; stalks 1–3 mm; scales 2–3, subequal, often poorly developed, heavily resin-coated. Leaf blade narrowly elliptic, oblong, or narrowly obovate, 4.5–9
3 KB (288 words) - 22:50, 5 November 2020
rounded to acute, abaxial faces ± hirtellous to densely piloso-strigillose, resin-gland-dotted, adaxial faces ± scabrellous or glabrate. Heads discoid, ± pedunculate
3 KB (236 words) - 20:50, 5 November 2020
abaxial keel, sessile, base decurrent, sheath absent, apex pointed or rounded; resin canals 2. Pollen cones solitary, ovoid-cylindric, yellowish. Seed cones maturing
6 KB (474 words) - 21:23, 5 November 2020