Iva microcephala
Trans. Amer. Philos. Soc., n. s. 7: 346. 1840.
Endemic
Annuals, 10–70 (–100) cm. Stems erect. Leaves: petioles 0–1 mm; blades linear to filiform, 10–35 (–60) × 0.6–1.5 (–3) mm, margins entire, faces ± scabrellous, glanddotted. Heads in ± spiciform arrays. Peduncles 0.5–1 mm. Involucres hemispheric, 1.5–2 mm. Phyllaries: outer 5 distinct, ± herbaceous. Paleae cuneiform to setiform, 1–2 mm. Pistillate florets 2–3+; corollas 0.5–0.8 mm. Functionally staminate florets 3–5; corollas 1.8–2 mm. Cypselae 1–1.5 mm. 2n = 32.
Phenology: Flowering Sep–Nov.
Habitat: Disturbed sites, moist or wet soils
Elevation: 1–100 m
Distribution
Ala., Fla., Ga., N.C., S.C.
Discussion
Selected References
None.
Lower Taxa
None.
... more about "Iva microcephala"
introrse +
connate +
herbaceous +
scarious +
absent +
hirsute +
papillate +
spiciform +
continuous +
decurrent +
linear;filiform +
winged;ribbed;winged;ribbed +
1;15 +
stigmatic +
absent +
zygomorphic +
tubular +
monomorphic +
dimorphic +
hispidulous +
scabrellous +
1mm;1.5mm +
staminate +
straight +
glabrous +
scabrellous +
distinct +
proximal +
absent +
3;5 +
bisexual +
dispersed +
singly +
indeterminate +
surrounding +
hemispheric +
conspicuous +
opposite +
cauline +
reflexed +
deltate +
distinct +
herbaceous +
2-carpellate +
inferior +
attached +
anatropous +
wanting +
cuneiform;setiform +
membranous +
persistent +
falling +
absent +
tough +
thick +
absent +
connate +
persistent +
herbaceous +
falling +
Trans. Amer. Philos. Soc., n. s. +
1840 +
pistillate +
absent +
fertile +
paleate +
convex;hemispheric +
fibrous +
exalbuminous +
modifed +
1;3 +
Endemic +
alternate +
branched +
erect +
absent +
2-branched +
papillate +
Iva microcephala +
Iva +
species +
longer +
annual +