Iva hayesiana

A. Gray

Proc. Amer. Acad. Arts 11: 78. 1876.

Treatment appears in FNA Volume 21. Treatment on page 26.

Perennials or subshrubs, 10–100 cm. Stems sprawling to erect (usually woody at bases). Leaves: petioles 0–3 (–10) mm; blades lance-elliptic to oblanceolate, 2–5 (–10) cm × 5–10 (–18) mm, margins usually entire, rarely toothed, faces sparsely strigose to scabrellous, glanddotted. Heads in ± racemiform arrays. Peduncles 2–3+ mm. Involucres ± hemispheric, 2.5–3.5 mm. Phyllaries: outer 5 distinct, ± herbaceous. Paleae linear to cuneiform, 1.5–2.5 mm. Pistillate florets 5; corollas 0.5–1 mm. Functionally staminate florets 5–12 (–20); corollas 1.5–2.5 mm. Cypselae 2–2.5 mm.


Phenology: Flowering year round.
Habitat: Alkaline flats, depressions
Elevation: 50–500 m

Distribution

V21-44-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Iva hayesiana"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
A. Gray +
decurrent +
compound +  and simple +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
lance-elliptic;oblanceolate +
5mm;10mm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
whitish +  and pinkish +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
scabrellous +
obcompressed +, plumply obovoid +  and pyriform +
fertile +  and bisexual +
Calif. +  and Mexico (Baja California) +
50–500 m +
scabrellous +
staminate +  and pistillate +
winged +  and beaked +
dispersed +
Alkaline flats, depressions +
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 />) +
hemispheric +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
conspicuous +
sessile +  and petiolate +
deltate +
2-carpellate +
linear;cuneiform +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
membranous +
persistent +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering year round. +
connate +  and distinct +
3 +  and 15 +
unequal +  and subequal +
Proc. Amer. Acad. Arts +
bearing subulate enations +, hairy +  and bristly +
convex;hemispheric +
exalbuminous +
decumbent +  and sprawling +
sprawling +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Ambrosieae +  and Undefined (tribe Undefined) subtribe Iveae +
Iva hayesiana +
species +
campanulate +  and cylindric +
toothed +  and entire +
10 cm100 mm <br />0.1 m <br /> (100 cm1,000 mm <br />1 m <br />) +