Iva angustifolia

Nuttall ex de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 529. 1836.

Endemic
Synonyms: Iva angustifolia var. latior Shinners Iva texensis
Treatment appears in FNA Volume 21. Treatment on page 27. Mentioned on page 25.

Annuals (rarely persisting), 20–60 (–100+) cm. Stems usually erect. Leaves: petioles 0–2 mm; blades lance-linear to linear, 12–25 (–45) × 1–4 (–7+) mm, margins entire, faces scabrellous to hispidulous, glanddotted. Heads in ± spiciform arrays. Peduncles 0–1 mm. Involucres ± prismatically turbinate, 2.5–3 mm. Phyllaries: outer 3–5 ± connate, ± herbaceous. Paleae linear, 1.5–2 mm. Pistillate florets 0–2+; corollas 0.3–0.8+ mm. Functionally staminate florets 2–5+; corollas 1.5–2 mm. Cypselae 2–3 mm. 2n = 32.


Phenology: Flowering Sep–Nov.
Habitat: Disturbed sites, moist soils
Elevation: 0–300 m

Distribution

V21-47-distribution-map.gif

Ark., Fla., Kans., La., Okla., Tex.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Iva angustifolia"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
Nuttall ex de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
decurrent +
compound +  and simple +
2.5 cm25 mm <br />0.025 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
trullate;spatulate;trullate;spatulate;ovate;obovate;linear;lanceolate;filiform;elliptic;deltate +
1mm;4mm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
whitish +  and pinkish +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
scabrellous +
obcompressed +, plumply obovoid +  and pyriform +
fertile +  and bisexual +
Ark. +, Fla. +, Kans. +, La. +, Okla. +  and Tex. +
0–300 m +
hispidulous +
scabrellous +
staminate +  and pistillate +
winged +  and beaked +
dispersed +
Disturbed sites, moist soils +
disciform +  and discoid +
in corymbiform , glomerate , paniculiform , racemiform or spiciform , arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
scarious +  and membranous +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
conspicuous +
sessile +  and petiolate +
deltate +
toothed +  and entire +
2-carpellate +
spatulate;linear or setiform +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
membranous +
persistent +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering Sep–Nov. +
connate +  and distinct +
3 +  and 15 +
unequal +  and subequal +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
bearing subulate enations +, hairy +  and bristly +
convex;hemispheric +
exalbuminous +
decumbent +  and sprawling +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Iva angustifolia var. latior +  and Iva texensis +
Iva angustifolia +
species +
campanulate +  and cylindric +
toothed +  and entire +
60 cm600 mm <br />0.6 m <br /> (100 cm1,000 mm <br />1 m <br />) +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
shrub +  and subshrub +