Agrostophyllinae

Agrostophyllum philippinense by Ronny Boos

Agrostophyllinae is a subtribe of orchids within the tribe Vandeae of the Orchidaceae family. This subtribe is notable for its unique floral structures and diverse species, which are primarily found in tropical regions.

Description

Members of the Agrostophyllinae subtribe are typically epiphytic or lithophytic orchids. They are characterized by their elongated stems and clustered leaves, which often form dense mats. The flowers of Agrostophyllinae species are usually small and arranged in inflorescences that can be either racemose or paniculate. The labellum (lip) of the flower is often three-lobed and may exhibit various colors and patterns, which aid in attracting pollinators.

Distribution

Agrostophyllinae orchids are predominantly found in tropical regions, particularly in Southeast Asia, New Guinea, and the Pacific Islands. They thrive in humid, forested environments where they can attach to trees or rocks.

Genera

The subtribe Agrostophyllinae includes several genera, with the most notable being:

• Agrostophyllum - This is the type genus of the subtribe and includes numerous species known for their grass-like leaves and small, clustered flowers.
• Earina - A genus that is primarily found in New Zealand and is known for its fragrant flowers and robust growth habit.

Ecology

Agrostophyllinae orchids play a significant role in their ecosystems by providing nectar and pollen for various pollinators, including bees, butterflies, and birds. Their epiphytic nature allows them to contribute to the biodiversity of forest canopies, where they create microhabitats for other organisms.

Cultivation

Cultivating Agrostophyllinae orchids can be challenging due to their specific environmental requirements. They generally prefer high humidity, good air circulation, and moderate to bright light. These orchids are often grown mounted on bark or in well-draining media to mimic their natural epiphytic conditions.

Related Pages

• Orchidaceae
• Vandeae
• Epiphyte
• Pollination
• Tropical rainforest