(rarely entire), apices obtuse to acute, abaxial or both faces usually resin-gland-dotted. Heads ± discoid, sessile, not individually bracteate, in clusters
4 KB (326 words) - 20:50, 5 November 2020
serrate, sometimes ciliate, faces glabrous or scabrous, gland-dotted (sometimes in ± deep, resin-filled pits, sometimes sessile) or pustulate, often ± resinous
6 KB (460 words) - 14:15, 7 March 2024
usually branched distally, hirtellous to pilosulous (hairs basifixed, some gland-tipped). Leaves mostly cauline; alternate; petiolate or sessile; blades obovate
3 KB (257 words) - 20:57, 5 November 2020
sometimes spinulose-aristate, usually not gland-dotted, usually with single, strongly developed, subepidermal resin pocket nearly as wide as bracts, sometimes
3 KB (242 words) - 19:24, 6 November 2020
sometimes with weakly developed, non- or weakly spinulose projection, gland-dotted, without resin pockets or pockets small, weakly developed (var. decumbens and
5 KB (211 words) - 20:58, 5 November 2020
sometimes reddish, tubes ± cylindric (± gland-dotted), throats campanulate, lobes 5, deltate (without resin sacs). Cypselae ± columnar, ribs 7–12, faces
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, not
3 KB (239 words) - 20:50, 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
(proximally tapered), ribs 4, faces gland-dotted between ribs, especially adaxially (pericarps without myxogenic cells or resin sacs; embryo sac development monosporic);
4 KB (413 words) - 15:37, 5 January 2023
margins entire or dentate (pinnately lobed or dissected), faces abaxially resin-gland-dotted, adaxially often tomentose. Heads discoid, in leafy-bracted racemiform
4 KB (379 words) - 20:49, 5 November 2020
toothed (rarely entire), apices obtuse to acute, abaxial faces usually resin-gland-dotted. Heads ± discoid, sessile, not individually bracteate, in clusters
3 KB (263 words) - 20:50, 5 November 2020
tubes ± cylindric (basally dilated, not gland-dotted), throats ± campanulate, lobes (2–)5, deltate (without resin sacs). Cypselae mostly columnar to obovoid
3 KB (286 words) - 20:57, 5 November 2020
sometimes glabrate or glabrous [sericeous] (hairs mostly medifixed) and gland-dotted. Leaves cauline [mostly basal]; alternate; petiolate or sessile; blades
3 KB (289 words) - 20:57, 5 November 2020
cylindric (not basally dilated, usually gland-dotted), throats ± campanulate, lobes 5, deltate (without resin sacs). Cypselae ± columnar, ribs 8–10 (not
3 KB (214 words) - 20:57, 5 November 2020
0.5–1.3 mm diam. Leaves with conspicuous, pitlike, abaxial gland that produces drop of resin, slightly glaucous. Pollen cones 2–3 × 2–2.5 mm; pollen sacs
2 KB (181 words) - 21:24, 5 November 2020
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
reddish brown to gray, glabrous or sparsely hairy, usually covered with resin-filled pits. Leaves (moderately crowded) ascending to spreading; blades linear
4 KB (323 words) - 20:59, 5 November 2020
sessile; margins entire or dentate to pinnatifid or palmatifid (faces often gland-dotted). Heads usually heterogamous (disciform or radiate), sometimes homogamous
24 KB (1,707 words) - 21:07, 5 November 2020
section), ribs (4–)5–10(–12+), faces usually gland-dotted, sometimes glabrous (pericarps without myxogenic cells or resin sacs, embryo sac development tetrasporic);
5 KB (365 words) - 20:56, 5 November 2020
Stems erect to ascending, green when young, fastigiately branched, glabrous, gland-dotted, resinous. Leaf blades ascending, sometimes spreading when older,
3 KB (303 words) - 21:06, 5 November 2020