Iva texensis (I. angustifolia)
Family: Asteraceae
Description: Annual or woody-based perennial to about 1 m high. Leaves lanceolate or linear, often thick but not fleshy. Heads 4-5 mm high. It is a perennial shrub typically growing 1–2 meters (3–6 feet) tall. It has alternate, narrow leaves measuring 3–8 cm in length, often slightly serrated and covered with fine hairs. The plant produces clusters of small, yellowish-green to whitish flowers in elongated inflorescences.
Field Identification:
Plant Trivia:
Occurrence: Found in coastal marshes, flats, and wetland areas, often in disturbed soils. It is native to eastern Texas and extends south to northeastern Mexico.
Bloom Period: Sept-Nov
Plant Use: It is an important stabilizer of marsh soils. This species plays a crucial role in wetland ecosystems. Its extensive root system stabilizes soil, reducing erosion, while the shrub provides food and shelter for insects, birds, and other wildlife. By supporting biodiversity, Iva texensis contributes to the overall health of marsh communities.
Dichotomous Key to the Genus Iva:
- Leaves fleshy……………………..…………I. imbricata
Leaves not fleshy………………………..………………..2
2. Leaves entire or nearly so……..………….I. texensis
Leaves toothed……………………………..…………….3
3. Plant a subshrub………………….……..I. frutescens
Plant an annual herb……………….…………I. annua
stxflora 