key, “radiate heads” have ray florets; “eradiate heads” lack ray florets and may be disciform, discoid, or radiant. Ray florets have zygomorphic corollas
270 KB (5,940 words) - 20:46, 31 January 2022
from receptacles among florets, e.g., some Gaillardia spp.; sometimes pitted, pit borders often fimbrillate to lacerate). Ray florets (rarely 0) usually in
24 KB (1,707 words) - 21:07, 5 November 2020
either in 1 series interior to ray florets, then usually connate and persistent, or 1 palea subtending each disc floret, then usually distinct and soon
11 KB (603 words) - 21:13, 5 November 2020
usually falling, oblong to linear or filiform, flat or ± conduplicate). Ray florets 0 or in 1(–2+) series, usually pistillate and fertile, rarely neuter or
18 KB (990 words) - 20:56, 5 November 2020
socket margins often fimbrillate; paleate in Eastwoodia and Rigiopappus). Ray florets 0 or in 1(–2+) series, usually pistillate, rarely neuter or styliferous
74 KB (1,788 words) - 20:57, 5 November 2020
paleate (paleae sometimes enfolding pistillate florets). Ray florets usually 0 (sometimes peripheral florets pistillate and corollas ± zygomorphic and bearing
21 KB (1,721 words) - 20:53, 5 November 2020
(paleae strongly conduplicate, each partly investing its subtended floret). Ray florets 0 or 3–25+, neuter; corollas yellow or orange, brown-purple, maroon
4 KB (390 words) - 21:14, 5 November 2020
thinner, each subtending a ray floret). Receptacles flat to slightly convex, paleate (paleae oblong, lanceolate, or linear). Ray florets 8–35+ in 1–4 series,
7 KB (387 words) - 21:10, 5 November 2020
investing subtended floret in H. newberryi). Ray florets usually 0, sometimes 8, pistillate, fertile; corollas white or whitish. Disc florets 12–70+, bisexual
3 KB (300 words) - 21:14, 5 November 2020
(often pitted and often bristly-setose or densely hairy). Ray florets 0 (corollas of peripheral florets in radiant heads often notably enlarged, usually 5-lobed
11 KB (727 words) - 17:16, 10 May 2024
Etymology: Greek tetra, four, and neuron, nerve, alluding to venation of ray floret corollas Treatment appears in FNA Volume 21. Treatment on page 447. Mentioned
7 KB (468 words) - 21:08, 5 November 2020
lance-attenuate or oblanceolate, herbaceous, each usually 1/2 enveloping subtended ray floret proximally, abaxially ± hirsute and sessile- or stipitate-glandular).
9 KB (579 words) - 21:13, 5 November 2020
lance-attenuate or oblanceolate, herbaceous, each usually 1/2 enveloping subtended ray floret proximally, abaxially scabroso-hirtellous, hirsute, or villous and/or
5 KB (425 words) - 21:13, 5 November 2020
sockets sometimes ± membranous). Florets of 1, 2, or 3+ kinds in a head (some not readily assignable to usual ray- and disc-floret categories, ± 3 combinations
8 KB (640 words) - 20:50, 5 November 2020
glabrous. Staminate heads 2–53 (ray florets: 0 or 1–70, styliferous and sterile, corolla laminae 1.1–12 mm; disc florets 11–78, functionally staminate;
7 KB (344 words) - 19:29, 6 November 2020
lanceolate or oblanceolate, herbaceous, each usually 1/2 enveloping a subtended ray floret proximally, abaxially pubescent to hirsute or villous, and stipitate-glandular)
5 KB (476 words) - 21:14, 5 November 2020
oblanceolate, or obovate, herbaceous, each usually 1/2 enveloping a subtended ray floret proximally, abaxially with pit-gland-tipped processes and glabrous or
5 KB (389 words) - 21:14, 5 November 2020
lance-attenuate or oblanceolate, herbaceous, each 1/2 or fully enveloping subtended ray floret proximally, ciliolate, abaxially stipitate-glandular, sometimes hirtellous)
6 KB (589 words) - 21:14, 5 November 2020
subtending a ray floret). Receptacles conic, paleate (paleae persistent, lanceolate to lance-ovate, flat or weakly conduplicate, apices acute). Ray florets 6–21+
4 KB (299 words) - 21:12, 5 November 2020
(paleae ± linear-conduplicate, each wrapped round a disc floret, distally dilated, hirtellous). Ray florets (2–)8(–13), pistillate, fertile; corollas pale yellow
8 KB (477 words) - 21:10, 5 November 2020
deflexed, 0.1–0.3 mm. Phyllary apices acute to short-acuminate. Ray florets (10–)25–45. Disc floret corollas: bases (mature) bulbous-swollen, indurate. Cypselae:
3 KB (192 words) - 19:29, 6 November 2020
navicular, membranous to scarious, each about equaling subtended floret). Ray florets 0 or 5–20+, pistillate, fertile; corollas yellow to orange [white
4 KB (335 words) - 21:11, 5 November 2020
enveloping a disc floret, pit borders irregularly toothed to entire), epaleate (pits sometimes interpreted as formed from connate paleae). Ray florets 8–22, neuter;
4 KB (273 words) - 21:07, 5 November 2020
fimbrillate, all or the peripheral each ± enfolding a disc floret. Ray (pistillate) florets 5(–8), fertile; corollas ochroleucous, tubes stout, glandular
6 KB (386 words) - 21:11, 5 November 2020
weakly clavate apically. The genus is divided into three sections based on ray floret presence or absence, monomorphic or dimorphic cypselae, and, to a lesser
20 KB (1,289 words) - 21:03, 5 November 2020
conduplicate, each enfolding a floret). Ray florets 1–5, pistillate, fertile; corollas whitish (tubes often longer than laminae). Disc florets 3–20+, functionally
3 KB (259 words) - 21:14, 5 November 2020
oblanceolate (± navicular), herbaceous, each ± 1/2 investing subtended ray floret proximally, abaxially canescent to hirsute or hispid to glabrate, usually
6 KB (489 words) - 21:14, 5 November 2020
paleate (paleae falling, subtending all or most disc florets, outer herbaceous, inner scarious). Ray florets (2–)3–5(–8), pistillate, fertile; corollas whitish
3 KB (310 words) - 21:13, 5 November 2020
outer pistillate florets have relatively small, ± filiform laminae (such florets are technically “ray florets” even though their “rays” are inconspicuous)
92 KB (1,874 words) - 21:04, 5 November 2020
each closely investing subtended floret, each forming a hard perigynium around a fruit and shed with it). Ray florets 5–8, neuter; corollas (readily falling)
3 KB (274 words) - 21:11, 5 November 2020
glabrous; ray floret 1; Ouachita Mountains, along border of Arkansas andOklahoma Solidago ouachitensis 5 Cypselae sparsely to densely hairy; ray florets (1–)2–5;
6 KB (239 words) - 21:01, 5 November 2020
sometimes conic, epaleate (sometimes pitted, pit margins often fimbrillate). Ray florets 0 or in 1(–2+) series, usually pistillate and fertile, rarely neuter or
18 KB (925 words) - 20:59, 5 November 2020
enfolding a floret). Receptacles ± flat, obscurely pitted, sparsely paleate (between ray and disc florets, paleae resembling inner phyllaries). Ray florets 3–13+
3 KB (282 words) - 21:05, 5 November 2020
3–6+ mm diam. Phyllaries (veiny, often purple-tipped, each subtending a ray floret) persistent, 5–13+ in 1(–2) series, erect (reflexed in fruit), basally
3 KB (273 words) - 21:00, 5 November 2020
linear, herbaceous to chartaceous or scarious, usually conduplicate). Ray florets usually (1–)3–40+, sometimes 0, usually pistillate and fertile, sometimes
16 KB (613 words) - 21:10, 5 November 2020
stipitate-glandular. Receptacles flat to slightly convex, pitted, epaleate. Ray florets (8–)12–35(–75+); usually in 1 series, in 2–5 series, rarely in 4–5+ series
57 KB (1,333 words) - 20:35, 6 November 2020
membranous, each enfolding a floret). Ray florets 1–5, pistillate, fertile; corollas whitish (tubes often longer than laminae). Disc florets 3–20+, functionally
3 KB (240 words) - 21:14, 5 November 2020
an associated cypsela may be interpreted as paleae). Ray florets 0 (corollas of peripheral florets sometimes notably larger than those of the inner, then
12 KB (619 words) - 21:15, 5 November 2020
straight, 0.6–2.4 mm, thick-based. Phyllary apices long-acuminate. Ray florets 13–21. Disc floret corollas: base not swollen and indurate. Cypselae: hairs apically
2 KB (162 words) - 21:05, 5 November 2020
deflexed or antrorse, 0.2–0.5 mm. Phyllary apices long-acuminate. Ray florets 30–75. Disc floret corollas: bases indurate, not conspicuously swollen. Cypselae:
3 KB (205 words) - 21:05, 5 November 2020
linear-lanceolate, unequal, outer acute, inner obtuse. Ray florets 5–11; laminae 2.8–5.5 × 0.3–0.7 mm. Disc florets 3–10; 2.5–4.6 mm, lobes 0.4-0.6 mm. Cypselae
5 KB (366 words) - 19:23, 6 November 2020
enations, sometimes gland-dotted; outer disc florets rarely subtended by paleae in Amblyolepis). Ray florets 0, or 1–55 (in 1–3 series), pistillate and fertile
8 KB (488 words) - 21:07, 5 November 2020
conic, usually epaleate, rarely paleate (paleae readily falling). Ray florets 0. Disc florets bisexual, fertile; corollas white, ochroleucous, or pink to purplish
13 KB (623 words) - 21:08, 5 November 2020
heads 4–32; ray (or pistillate) florets 5–70, corolla laminae 0 or 0.1–6.3 mm; disc floret style branches 0–1.7 mm. Pistillate heads 8–42; ray (or pistillate)
4 KB (335 words) - 21:00, 5 November 2020
3–32; ray florets 2–27, corolla laminae 2.1–7.8 mm; disc floret style branches 0.4–1.4 mm, papillate or hairy. Pistillate heads 9–34; ray florets 48–89
4 KB (324 words) - 21:00, 5 November 2020
2–20; ray florets 1–13, corolla laminae 1.6–12 mm; disc floret style branches 0.05–2 mm, papillate or hairy. Pistillate heads 5–19; ray florets 30–109
4 KB (292 words) - 21:00, 5 November 2020
heads 8–35; ray florets 4–19, corolla laminae 1.1–7.7 mm; disc floret style branches 0.5–2.3 mm, hairy. Pistillate heads 6–34; ray florets 31–139, corolla
4 KB (308 words) - 21:00, 5 November 2020
(2–)2.5–4.5 mm. Ray florets (7–)13–24; corolla laminae white, occasionally drying with bluish midstripe abaxially, (4–)6–10(–12) mm. Disc floret corollas 2–3
3 KB (231 words) - 21:03, 5 November 2020
green, margins erose-hyaline, inner more widely so, apices mucronulate. Ray floret laminae 5–8 mm. Cypselae golden brown, ribs stramineous. 2n = 18. Phenology:
3 KB (214 words) - 20:58, 5 November 2020
stipitate-glandular, often resinous. Receptacles slightly convex, pitted, epaleate. Ray florets 0, or 1–18, pistillate, fertile; corollas usually yellow (white in E.
19 KB (930 words) - 21:05, 5 November 2020