Spadix usually with zone of sterile flowers between male and female zones, more rarely with fertile zones contiguous or with naked axis between zones; spadix with smooth terminal sterile appendix. FLOWERS : unisexual, perigone absent. MALE FLOWER : 3-4-androus, filaments very short but distinct, connective slender, thecae shortly obovoid, opposite or subopposite, dehiscing by apical pore-like slit, rarely porose ( A. pictum ). POLLEN : usually presented in a loose, powdery mass, sometimes extruded in strands ( A. pictum, A. nigrum ), grains inaperturate, spherical to subspheroidal, medium-sized (mean 32 µm., range 29-34 µm.), exine spinose, rarely scabrous ( A. korolkowii ). In the garden it prefers full sun and loam soil. In UK gardens it needs a warm, frost-free position in the UK (RHS H1c). Suggested uses include houseplants, patio and container plants, sub-tropical, bedding, conservatory and greenhouse and cut flowers. It tolerates soil of any pH, moist but well-drained conditions and south-facing or west-facing aspects.

Arum byzantinum is a perennial plant known for its distinctive tubers and arrow-shaped leaves. This member of the Araceae family features a concealed cluster of small flowers at the base of a club-like spadix, surrounded by a prominent hood-like spathe, ultimately giving way to clusters of vibrant red berries.

Arum byzantinum

Arum concinnatum black-spotted is a clump-forming herbaceous perennial cultivar within the Arum genus, known for its tuberous roots and arrow-shaped leaves. This deciduous plant produces small flowers hidden at the base of a yellow or purple spadix, surrounded by a distinctive hood-like spathe. It thrives in full sun on south- or west-facing, sheltered sites with moist but well-drained loam soil of any pH. Suitable for use as a houseplant or in patio containers, it is hardy to H1c and is best propagated by division in spring, with spring being its season of interest.

Arum concinnatum black-spotted is a clump-forming herbaceous perennial with arrow-shaped leaves, ideal for spring display in conservatories or patios.

Arum concinnatum black-spotted

Arum dioscoridis, commonly known as the Spotted arum, is a plant of the arum family (Araceae). The plant was described by James Edward Smith in Flora Graeca (1816). The species is named after the ancient Greek physician and botanist Pedanius Dioscorides. The plant is native to forests in the east of the Mediterranean in southern Turkey, Cyprus, Greece and the Middle East. Grow it in full sun and loam soil. In UK gardens it needs a warm, frost-free position in the UK (RHS H1c). It works well for houseplants, patio and container plants, sub-tropical, bedding, conservatory and greenhouse and cut flowers. It tolerates soil of any pH, moist but well-drained conditions and south-facing or west-facing aspects. Plant at appropriate depth in well-drained soil.

Arum dioscoridis is a perennial member of the Araceae family known for its distinctive arrow-shaped leaves and unique flowering structure. Hidden at the base of its club-like spadix, small flowers emerge, surrounded by a striking hood-like spathe, which later gives way to vibrant red berries.

https://en.wikipedia.org/wiki/Arum_dioscoridis

Arum dioscoridis

Arum dioscoridis var. dioscoridis is a clump-forming perennial cultivar from the Arum genus, known for developing tubers and simple arrow-shaped leaves. This deciduous plant produces small flowers hidden at the base of a yellow or purple spadix, surrounded by a hood-like spathe, followed by red berries. It thrives in full sun on south- or west-facing, sheltered sites with moist but well-drained loam soil of any pH. Hardy to H1c, it is suitable for use as a houseplant, patio or container plant, and in conservatories or greenhouses, with interest in spring.

Arum dioscoridis var. dioscoridis is a clump-forming perennial with arrow-shaped leaves and hidden spring flowers, ideal for greenhouses and patios.

Arum dioscoridis var. dioscoridis from Turkey

Arum elongatum is a clump-forming perennial cultivar within the Arum genus, known for developing tubers and simple arrow-shaped leaves. It produces small flowers hidden at the base of a yellow or purple club-like spadix, surrounded by a prominent hood-like spathe, followed by red berries. This deciduous plant thrives in full sun with a south or west-facing aspect, preferring moist but well-drained loam soil of any pH. Suitable for sheltered locations, it is hardy to H1c and is often grown as a houseplant, patio or container plant, and in conservatories or greenhouses, with interest in spring and summer.

Arum elongatum is a clump-forming perennial with arrow-shaped leaves, ideal for patios and greenhouses, flowering in spring and summer.

Arum elongatum

Arum idaeum is a clump-forming perennial cultivar of the Arum genus, known for developing tubers and bearing simple, arrow-shaped leaves. This deciduous plant produces small flowers hidden at the base of a yellow or purple club-like spadix, surrounded by a prominent hood-like spathe, followed by red berries. It thrives in well-drained loam soil with moist conditions and prefers full sun exposure, ideally in a south- or west-facing, sheltered position. Suitable for use as a houseplant, patio or container plant, and in conservatories, it is hardy to H1c and is best propagated by division in spring.

Arum idaeum is a clump-forming perennial with arrow-shaped leaves, spring flowers, ideal for patios, conservatories, and cut flowers in full sun.

Arum idaeum

Arum italicum is a species of flowering herbaceous perennial plant in the family Araceae, also known as Italian arum and Italian lords-and-ladies. It is native to the British Isles and much of the Mediterranean region, the Caucasus, Canary Islands, Madeira and northern Africa.

Arum italicum 'Caroline Hayes' is a spring-flowering perennial ideal for patios, containers, and conservatories, thriving in full sun with RHS H1c hardiness.

Arum italicum 'Caroline Hayes'

Arum italicum 'Eco Ghost' is a clump-forming perennial cultivar of the Arum genus, which is known for its tuberous plants with arrow-shaped leaves and small flowers hidden at the base of a yellow or purple spadix. This deciduous cultivar thrives in full sun, ideally in a south- or west-facing, sheltered position with moist but well-drained loam soil of any pH. Hardy to UK zone H1c, it is suitable for use as a houseplant, in patios or containers, and in conservatories or greenhouses. It is best propagated by division in spring and is of interest during the spring season.

Arum italicum 'Eco Ghost' is a deciduous perennial with arrow-shaped leaves, ideal for full sun and versatile in containers, bedding, and greenhouses in spring.

Arum italicum 'Eco Ghost'

Arum italicum 'Lady Aron' is a clump-forming herbaceous perennial belonging to the Arum genus, known for its tuberous roots and arrow-shaped leaves. This deciduous cultivar thrives in full sun on south- or west-facing, sheltered sites with moist but well-drained loam soil of any pH. It produces small flowers hidden at the base of a yellow or purple spadix, surrounded by a hood-like spathe, followed by red berries. Suitable for houseplants, patios, conservatories, and cut flowers, it is hardy to H1c and is best propagated by division in spring.

Arum italicum 'Lady Aron' is a herbaceous perennial with arrow-shaped leaves, ideal for full sun and spring interest in containers or conservatories.

Arum italicum 'Lady Aron'

Arum italicum 'Pamela Harper' is a clump-forming perennial cultivar within the Arum genus, known for its tuberous growth and arrow-shaped leaves. This deciduous plant produces small flowers hidden at the base of a yellow or purple spadix, surrounded by a hood-like spathe, followed by red berries. It thrives in full sun, ideally in a south- or west-facing, sheltered position with moist but well-drained loam soil of any pH. Suitable for houseplants, patios, conservatories, and bedding, it is hardy to H1c and is best propagated by division in spring.

Arum italicum 'Pamela Harper' is a tuberous perennial with arrow-shaped leaves, ideal for full sun and spring interest in patios or conservatories.

Arum italicum 'Pamela Harper'

Arum italicum 'Taff's Giant' is a clump-forming perennial cultivar within the Arum genus, known for its tuberous growth and distinctive arrow-shaped leaves. This deciduous plant produces small flowers hidden at the base of a yellow or purple spadix, surrounded by a prominent hood-like spathe, followed by red berries. It thrives in full sun on south- or west-facing, sheltered sites with moist but well-drained loam soil of any pH. Suitable for houseplants, patios, bedding, and conservatories, it is hardy to UK zone H1c and is best propagated by division in spring.

Arum italicum 'Taff's Giant' is a clump-forming perennial with arrow-shaped leaves, ideal for spring display in patios, conservatories, and containers.

Arum italicum 'Taff's Giant'

Arum italicum giant is a clump-forming cultivar of the Arum genus, which comprises perennial plants with tubers and arrow-shaped leaves. This deciduous plant produces small flowers hidden at the base of a yellow or purple spadix, surrounded by a hood-like spathe, followed by red berries. It thrives in full sun on south- or west-facing, sheltered sites with moist but well-drained loam soil, tolerant of a range of pH levels. Hardy to H1c, it is suitable for use as a houseplant, in patios, containers, conservatories, or as bedding, with spring providing the main season of interest.

Arum italicum giant is a clump-forming perennial with arrow-shaped leaves and hidden spring flowers, ideal for patios, containers, and greenhouses.

Arum italicum giant

Arum maculatum 'Rusné' is a clump-forming cultivar of the Arum genus, which comprises perennial plants developing tubers with arrow-shaped leaves. This deciduous cultivar thrives in full sun on south- or west-facing, sheltered aspects and prefers moist but well-drained loam soils with a neutral to acidic or alkaline pH. It is hardy to UK zone H1c and is suitable for use as a houseplant, in patios and containers, or in conservatories and greenhouses. The plant flowers in spring, producing small flowers hidden at the base of a yellow or purple spadix, enclosed by a prominent hood-like spathe, followed by red berries.

Arum maculatum 'Rusné' is a spring-flowering, clump-forming perennial with arrow-shaped leaves, ideal for full sun and sheltered patios or conservatories.

Arum maculatum 'Rusné'

Arum orientale is a woodland plant species of the family Araceae. It is found in southeastern Europe as far west as Vienna and in Turkey. Its primary range is Romania, Bulgaria, and southern Ukraine. It is native to Albania, Austria, Bulgaria, Czechia-Slovakia, Greece and other regions. In the garden it prefers full sun and loam soil. In UK gardens it needs a warm, frost-free position in the UK (RHS H1c). Suggested uses include houseplants, patio and container plants, sub-tropical, bedding, conservatory and greenhouse and cut flowers. It tolerates soil of any pH, moist but well-drained conditions and south-facing or west-facing aspects. Plant at appropriate depth in well-drained soil.

Arum orientale, commonly known as the oriental arum, belongs to the Araceae family. This perennial plant is characterized by arrow-shaped leaves and features small flowers hidden at the base of a club-like spadix, which is surrounded by a hood-like spathe. After flowering, it produces vibrant red berries.

https://en.wikipedia.org/wiki/Arum_orientale

Arum orientale

Arum palaestinum is a species of flowering herbaceous perennial plant in the genus Arum and the family Araceae. It is also known as black calla, Solomon's lily, priest's hood, noo'ah loof and kardi. Native to the Mediterranean Basin, it is employed in the Middle East for culinary and medicinal purposes. In the garden it prefers full sun and loam soil. In UK gardens it needs a warm, frost-free position in the UK (RHS H1c). Suggested uses include houseplants, patio and container plants, sub-tropical, bedding, conservatory and greenhouse and cut flowers. It tolerates soil of any pH, moist but well-drained conditions and south-facing or west-facing aspects. Plant at appropriate depth in well-drained soil.

Arum palaestinum, commonly known as the black calla or black arum, is a member of the Araceae family. This perennial plant is characterized by its arrow-shaped leaves and unique club-like spadix, which is shielded by a distinctive hood-like spathe; it later produces striking red berries. Also referred to as the Palestine lily, this plant adds an intriguing element to any botanical collection.