Family

Plant Group

Onagraceae

Leaves are simple and flowers are in terminal inflorescences. There are 4-5 sepals and petals, and twice as many stamens as petals, often in two whorls. Ovary is inferior and fruit is usually a capsule.

Dicotyledon

Orchidaceae

All orchids have certain distinguishing features. The flower has three sepals (the calyx) and three petals (the corolla). There is a dorsal and two lateral sepals. In the corolla, the middle petal is usually modified to form the labellum, which is often ornately decorated with small glands (calli), this is usually the dominant feature that attracts insects for pollination. The reproductive organs, stamens and style, are fused to form a column.

Image: Gill Brown

Monocotyledon

Orobanchaceae

Herbs that lack chlorophyll that are parasitic on the roots of other plants. Leaves are alternate and scale-like. Flowers are in terminal spikes with a calyx of 4 or 5 parts that are unequally united into two parts. The corolla is fused with 5 lobes. There are 4 stamens in pairs of unequal length. Fruit is a capsule

Image: Alison Kellow

Dicotyledon

Osmundaceae

Fern with rhizomes that often form an erect trunk. Sporangia are not in sori and are scattered on the underside of the frond. No indusium is present.

Image: Alison Kellow

Fern or fern-ally

Oxalidaceae

Oxalis species are usually hairy with trifoliate clover-like leaves and small yellow flowers followed by cylindrical fruit.

Dicotyledon