Ageratina jucunda

(Greene) Clewell & Wooten

Brittonia 23: 142. 1971.

Common names: Hammock snakeroot
Endemic
Basionyms: Eupatorium jucundum Greene Pittonia 3: 180. 1897,
Treatment appears in FNA Volume 21. Treatment on page 551. Mentioned on page 548.

Perennials, 40–80 (–100) cm. Stems erect, lax, minutely pilose. Leaves opposite; petioles 7–15 (–22) mm; blades narrowly deltate to rhombic, 2–6 (–7) × 1.5–4 cm, (usually subcoriaceous) bases usually cuneate, sometimes truncate to slightly subcordate, margins usually coarsely serrate or incised, sometimes crenate to subentire, apices acute to acuminate, abaxial faces glabrous or hairy on veins. Heads clustered. Peduncles 2–10 mm, sparsely puberulent. Involucres 2.5–4 mm. Phyllaries: apices acute, abaxial faces puberulent to villous-puberulent. Corollas white, lobes glabrous or sparsely short-hirtellous. Cypselae usually finely hirtellous-strigose on distal 1/3, sometimes glabrous. 2n = 34.


Phenology: Flowering (Sep–)Oct–Dec(–Jan).
Habitat: Sand pine scrub, longleaf pine-turkey oak sand ridges, pine-palmetto, live-oak woods, hammocks, dunes, roadsides, old fields, stream banks, dry flatwoods
Elevation: 0–50 m

Discussion

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Ageratina jucunda"
puberulent +  and villous-puberulent +
not tailed +, truncate +, rounded +  and obtuse +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
indeterminate +  and determinate +
Guy L. Nesom +
(Greene) Clewell & Wooten +
truncate +  and slightly subcordate +
enlarged +
Eupatorium jucundum +
3(-5)-nerved +
6 cm60 mm <br />0.06 m <br /> (7 cm70 mm <br />0.07 m <br />) +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
dissected +, lobed +, toothed +  and entire +
narrowly deltate;rhombic +
1.5cm;4cm +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
Hammock snakeroot +
glabrous +  and hirtellous-strigose +
scabrellous +
fusiform +  and prismatic +
fertile +  and bisexual +
Fla. +  and Ga. +
0–50 m +
puberulent +, pilose +, hispidulous +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Sand pine scrub, longleaf pine-turkey oak sand ridges, pine-palmetto, live-oak woods, hammocks, dunes, roadsides, old fields, stream banks, dry flatwoods +
indeterminate +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
campanulate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
short-hirtellous +  and glabrous +
lanceolate +  and lance-linear +
serrate +, dentate +  and entire +
crenate +  and subentire +
2-carpellate +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering (Sep–)Oct–Dec(–Jan). +
2-nerved +  and 0-nerved +
8 +  and 30 +
subequal +  and unequal +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Ageratina jucunda +
Ageratina +
species +
obconic +  and campanulate +
80 cm800 mm <br />0.8 m <br /> (100 cm1,000 mm <br />1 m <br />) +
40 cm400 mm <br />0.4 m <br /> (80 cm800 mm <br />0.8 m <br />) +
shrub +  and subshrub +