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Hibiscus laevis (syn. Hibiscus militaris), the halberd-leaf rosemallow, is a herbaceous perennial flower native to central and eastern North America. Their showy, creamy-white or pink flowers are large, up to 15 centimetres (6 in) across, and are hard to miss. These flowers require exposure to sunlight to open up properly, and then last only a single day.
The unbranched stems of this plant are round and hairless, frequently growing to 2 metres (6 ft) tall and sometimes taller. The root system includes a taproot.
The hairless leaves are alternate, 8 to 15 centimetres (3 to 6 in) long, divided into 3–5 pointed lobes (cleft) and have serrate or crenate edges. They are simple and pointed at the tip. The leaves with three lobes resemble a medieval halberd because the middle lobe is much larger than the two side lobes. The five-lobed leaves also look like halberds or daggers.
Flowers are solitary or occur in small clusters at the tops of the upper stems. They are fairly large, about 13 centimetres (5 in) across when fully open. They are mostly white or light pink, but the inside throat of the flower is often maroon or a rich purplish pink color. Each flower has five petals with five hairless green sepals below. There are numerous stamens, all attached to a central column. The pistils have superior ovaries and five stigmas protruding from the central column in the flower. The fruit is an ovoid capsule containing many seeds.
The blooming period can occur from mid-summer to early fall (June to September) and lasts about a month. Each flower lasts only a single day. This plant spreads by reseeding itself. The stalks die down in the winter and grow back in the spring.
This plant prefers full or partial sun and moist conditions. It can grow in sand or clay with sufficient moisture, and can tolerate poor drainage. They are frequently found along streams, ponds and lakes and in marshy areas, roadside ditches, and sometimes in shallow standing water.
The seeds of this plant are eaten by waterfowl and bobwhite quail.
Hibiscus laevis (syn. Hibiscus militaris), the halberd-leaf rosemallow, is a herbaceous perennial flower native to central and eastern North America. Their showy, creamy-white or pink flowers are large, up to 15 centimetres (6 in) across, and are hard to miss. These flowers require exposure to sunlight to open up properly, and then last only a single day.
The unbranched stems of this plant are round and hairless, frequently growing to 2 metres (6 ft) tall and sometimes taller. The root system includes a taproot.
The hairless leaves are alternate, 8 to 15 centimetres (3 to 6 in) long, divided into 3–5 pointed lobes (cleft) and have serrate or crenate edges. They are simple and pointed at the tip. The leaves with three lobes resemble a medieval halberd because the middle lobe is much larger than the two side lobes. The five-lobed leaves also look like halberds or daggers.
Flowers are solitary or occur in small clusters at the tops of the upper stems. They are fairly large, about 13 centimetres (5 in) across when fully open. They are mostly white or light pink, but the inside throat of the flower is often maroon or a rich purplish pink color. Each flower has five petals with five hairless green sepals below. There are numerous stamens, all attached to a central column. The pistils have superior ovaries and five stigmas protruding from the central column in the flower. The fruit is an ovoid capsule containing many seeds.
The blooming period can occur from mid-summer to early fall (June to September) and lasts about a month. Each flower lasts only a single day. This plant spreads by reseeding itself. The stalks die down in the winter and grow back in the spring.
This plant prefers full or partial sun and moist conditions. It can grow in sand or clay with sufficient moisture, and can tolerate poor drainage. They are frequently found along streams, ponds and lakes and in marshy areas, roadside ditches, and sometimes in shallow standing water.
The seeds of this plant are eaten by waterfowl and bobwhite quail.
Hibiscus militaris on the Potomac River in Great Falls Park 
Hibiscus laevis seeds
El hibisco militar o hibisco alabarda (Hibiscus laevis, sin. Hibiscus militaris) es una planta herbácea perteneciente a la familia de las malváceas, nativa del centro y este de Norteamérica.
Sus vistosas flores son grandes, de color blanco crema o rosado, de hasta 15 cm de ancho. Estas flores requieren una exposición a la luz solar para abrir correctamente, y luego sólo duran un solo día. Los tallos no ramificados de esta planta son redondos, con frecuencia mayor de 2 m de alto y más alto a veces. El sistema radicular incluye un raíz principal.
Las hojas son alternas, de 7-15 cm de largo , divididas en 3-5 lóbulos agudos (hendiduras) y tienen bordes serrados o crenados. Son simples con punta. Las hojas con tres lóbulos se asemejan a una alabarda de la Edad Media, debido a que el lóbulo medio es mucho mayor que los dos lóbulos laterales. Las hojas de cinco lóbulos también parecen puñales o alabardas .
Las flores son solitarias o en pequeños grupos se producen en la parte superior de los tallos superiores. Son bastante grandes, con un diámetro de unos 15 cm cuando están completamente abiertas. En su mayoría son de color blanco o rosa claro, pero dentro de la garganta de la flor, es a menudo de color marrón o un fuerte color rosa purpúreo. Cada flor tiene cinco pétalos con cinco sépalos verdes a continuación. Tiene numerosos estambres, todos unidos a una columna central. Los pistilos tienen ovarios superiores y cinco estigmas que sobresalen de la columna central de la flor. El fruto es una cápsula ovoide que contiene muchas semillas.
El período de floración puede ocurrir a partir de mediados del verano hasta principios del otoño ( junio a septiembre ) y dura aproximadamente un mes. Cada flor dura sólo un día. Esta planta se propaga por sí misma en resiembra . Los tallos mueren en el invierno y vuelven a crecer en primavera.
Esta planta prefiere pleno sol o parcial y las condiciones húmedas. Puede crecer en arena o arcilla con suficiente humedad y puede tolerar un mal drenaje. A menudo se encuentran a lo largo de arroyos, lagunas y lagos y en áreas pantanosas , cunetas , y a veces en el agua estancada de poca profundidad.
Las semillas de esta planta son consumidos por las aves acuáticas y codornices.
Hibiscus laevis fue descrita por Carlo Allioni y publicado en Auctarium ad Synopsim Methodicam Stirpium Horti Reg. Taurinensis 31. 1773.[2]
Hibiscus: nombre genérico que deriva de la palabra griega: βίσκος ( hibískos ), que era el nombre que dio Dioscórides (aC. 40-90) a Althaea officinalis.[3]
laevis: epíteto latíno que significa "dentada"[4]
El hibisco militar o hibisco alabarda (Hibiscus laevis, sin. Hibiscus militaris) es una planta herbácea perteneciente a la familia de las malváceas, nativa del centro y este de Norteamérica.
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