Arnoglossum reniforme

(Hooker) H. Robinson

Phytologia 46: 441. 1980.

Endemic
Basionyms: Senecio atriplicifolius var. reniformis Hooker Fl. Bor.-Amer. 1: 332. 1834,
Synonyms: Conophora reniformis (Hooker) Nieuwland Mesadenia reniformis (Hooker) Rafinesque S. reniformis (Hooker) MacMillan
Treatment appears in FNA Volume 20. Treatment on page 625. Mentioned on page 623.

Plants 100–300 cm. Stems ridged to angulate (usually glabrous, rarely sparsely puberulent distally, not glaucous). Basal leaves: (petioles to 30 cm) blades (with 3–5 main veins) reniform or ovate-cordate, to 40+ cm, margins lobed or dentate. Cauline leaves: proximal petiolate, blades ovate, margins entire, serrate, or dentate; distal petiolate or sessile, smaller (rarely hairy). Involucres (8–) 10–13 (–14) mm. Phyllaries pale green, narrowly ovate, midveins not winged (tips obtuse). Corollas white or greenish, 8–9 (–10.5) mm. Cypselae fusiform or clavate, 4–5 mm (dark-brown or purple, 4–5-ribbed); pappi 6–8 mm. 2n = 50.


Phenology: Flowering mid May–early Sep.
Habitat: Open woods
Elevation: 10–500 m

Distribution

V20-1402-distribution-map.gif

Ala., Ark., Del., Ga., Ill., Ind., Iowa, Ky., Md., Minn., Miss., Mo., N.J., N.C., Ohio, Okla., Pa., Tenn., Va., W.Va., Wis.

Discussion

Arnoglossum muehlenbergii of H. Robinson, Cacalia muhlenbergii of Fernald, and Mesadenia muhlenbergii of Rydberg were based on Senecio muehlenbergii Schultz-Bipontinus, a superfluous name based on Cacalia reniformis Muhlenberg ex Willdenow.

Selected References

None.

Lower Taxa

None.

... more about "Arnoglossum reniforme"
not tailed +, rounded +  and obtuse +
papillate +
scarious +
usually ovate +  and lance-linear +
indeterminate +  and determinate +
Loran C. Anderson +
(Hooker) H. Robinson +
decurrent +
Senecio atriplicifolius var. reniformis +
ovate;ovate-cordate;reniform +
0 cm0 mm <br />0 m <br /> (40 cm400 mm <br />0.4 m <br />) +
winged;nerved;ribbed +
barbellate +  and smooth +
0.9 cm9 mm <br />0.009 m <br /> (1.05 cm10.5 mm <br />0.0105 m <br />) +
greenish +  and white +
0.8 cm8 mm <br />0.008 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
nerved +  and (4-)10-15-ribbed +
clavate +  and fusiform +
fertile +  and bisexual +
fertile +  and bisexual +
sessile +  and petiolate +
Ala. +, Ark. +, Del. +, Ga. +, Ill. +, Ind. +, Iowa +, Ky. +, Md. +, Minn. +, Miss. +, Mo. +, N.J. +, N.C. +, Ohio +, Okla. +, Pa. +, Tenn. +, Va. +, W.Va. +  and Wis. +
10–500 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open woods +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
1.3 cm13 mm <br />0.013 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cylindric;turbinate +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
recurved;spreading +
lanceolate +
dentate +, serrate +  and entire +
dentate +  and lobed +
2-carpellate +
persistent +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering mid May–early Sep. +
unequal +  and subequal +
styliferous +, neuter +  and pistillate +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
ridged +  and angulate +
appendaged +  and truncate +
papillate +
Conophora reniformis +, Mesadenia reniformis +  and S. reniformis +
Arnoglossum reniforme +
Arnoglossum +
species +
campanulate +
30 cm300 mm <br />0.3 m <br /> (300 cm3,000 mm <br />3 m <br />) +