Common Alder

Flower: Yellow and pendulous (male catkins). Green and oval (female catkins). Male and female catkins present on same tree, and grouped in clusters of 3-8 on each stalk. Fruit: In winter the catkins turn into hard, dark, cone-like fruit which eventually release the seeds. Leaves: Deciduous. Round, dark green, leathery, smooth, serrated edges.

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Marsh Arrowgrass

Flower: A flower spike. The green flowers have purple edges. Individual flowers are up to 3mm wide. Flowers have 3 petals and 6 stamens. Fruit: Narrow, erect and arrow-like. Leaves: Long and grass-like leaves with deep grooves.

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Broad-leaved Arrowhead

Flower: The white (pink tinged) flowers have 3 petals and 3 green sepals. They form flower spikes and each flower is about 4cm wide. This species is similar to Arrowhead (Sagittaria saggitifolia) but without the base of the petals being purple. Purple stamens. Insect pollinated. Fruit: The fruits are globular and produce seeds that ripen in August and September. Leaves: Arrow-shaped leaves on the end of a stalk, up to 30cm in length. Perennial.

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Canadian Arrowhead

Flower: Flowers are in whorls of 3, each measuring approximately 1 inch across. The petals are white, tinged pink. 6 or more stamens. Pollinated by insects. Fruit: Globular fruit covered in hooked seeds. The fruit turns reddish as the seeds mature. Leaves: An aquatic perennial with submerged, broadly elliptical, long-stalked leaves, tapering to a point.

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Bog Arum

Flower: Bog Arum produces a striking, arum-like inflorescence consisting of a creamy-white spathe that wraps around a short, yellow-green spadix. The spathe is around 4–6 cm long, and the flowering period typically occurs in late spring to early summer (May to July). The spadix is covered with tiny, bisexua... Fruit: The plant develops a cluster of bright red berries in late summer. These are fleshy, rounded, and contain several seeds. While visually attractive, the berries are toxic if ingested, containing irritating compounds that can cause severe gastrointestinal symptoms. Leaves: Bog Arum has glossy, dark green, heart- or kidney-shaped leaves with long stalks, often growing up to 15 cm long. They emerge from a creeping rhizome and often form a loose rosette. The leaves are thick and waxy, helping them survive in their typical waterlogged habitats.

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Alpine Bartsia

Flower: Alpine Bartsia produces striking dark purple to violet flowers, about 15–20 mm long, arranged in dense terminal spikes. Each flower is two-lipped, with a hooded upper lip and a three-lobed lower lip, typical of the figwort family (Orobanchaceae). The flowers appear from June to August, providing a b... Fruit: After flowering, the plant develops small, oblong capsules, each containing numerous tiny seeds. These capsules remain enclosed by the persistent calyx. Seeds are dispersed by wind and gravity, often falling near the parent plant — contributing to its patchy and restricted distribution in upland hab... Leaves: Leaves are opposite, dark green to purplish, and coarsely toothed, with a slightly glossy surface. They are ovate to lance-shaped and often have a reddish tinge, especially in upland light conditions. The lower leaves are stalked, while upper ones are often sessile (without stalks) and can sometimes...

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White Beak-sedge

Flower: White Beak-sedge (Rhynchospora alba) features small, inconspicuous flowers with pale to creamy-colored petals, typically arranged in compact clusters or spikelets at the tips of its slender, grass-like stems. The flowers are delicate and often go unnoticed due to their subtle appearance, but they ad... Fruit: The fruit of White Beak-sedge consists of small, nut-like achenes. These achenes are typically dark brown or black and are attached to the plant's stem in clusters. They have a hard, seed-like shell and are dispersed by wind or water, contributing to the plant's reproductive cycle. Leaves: The leaves of White Beak-sedge are long, slender, and grass-like in appearance. They are typically dark green and have a linear shape. These leaves grow in dense tufts and arise from the base of the plant, forming an attractive clump. The leaves are typically smooth and narrow, adding to the overall...

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Marsh Bedstraw

Flower: Marsh Bedstraw produces small, star-like white flowers from June to September. Each flower has four narrow petals arranged in a cross shape, giving a delicate, open appearance. The flowers grow in loose, branched clusters at the tips of stems and leaf axils. Though individually tiny—only 2–3 mm acro... Fruit: The fruit consists of a pair of tiny round nutlets, each with a rough surface and covered in hooked bristles that help them cling to passing animals or float in water. These ripen in late summer and autumn. This method of dispersal aids the plant’s spread through marshes, ditches, and boggy areas. Leaves: Leaves are narrow, lance-shaped, and arranged in whorls of four to six around the stem. They are smooth-edged, with a slightly glossy green surface, and lack the backward-pointing hooks seen in some other Galium species. The stems are weak and square in cross-section, often sprawling or scrambling o...

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Dwarf Birch

Flower: Greenish-brown erect catkins, up to 1.5cm long. Smaller than the catkins of Downy Birch and Silver Birch. Wind pollinated. Fruit: The fruit is a small winged achene (a type of one-seeded, dry fruit). In fruit from July to September. Leaves: Small, round, hairless and deeply toothed. They are downy when young. Up to 1.5mm across. The leaves turn yellow, orange or red in autumn.

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Hairy Bittercress

Flower: Tiny and forming clusters at the top. 4 white petals with 4 yellow stamens. Counting the number of stamens is perhaps the most reliable way to distinguish this flower from the almost identical Wavy Bittercress which has 6 yellow stamens. Fruit: Long and slender seed pods that split open when ripe. Leaves: Basal rosette, anything up to 9 inches long. Compound leaves with alternate leaflets that have one leaf per node along the main upright stem. The leaves persist throughout the winter months.

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Wavy Bittercress

Flower: Tiny and forming clusters at the top. 4 white petals with 6 yellow stamens. Counting the number of stamens is perhaps the most reliable way to distinguish this flower from the almost identical Hairy Bittercress which has 4 yellow stamens. Fruit: Long, thin, cylindrical seed pods which usually are lower than the topmost flowers. This is useful to know when trying to distinguish this flower from Hairy Bittercress which has seed pods that normally overtop the flowers. Leaves: The basal rosette has alternate leaves. Stem leaves are compound with 3-6 pairs of leaflets and a terminal leaflet. Leaflets are wavy edged. The upright main stem upon which the leaves emerge from are likely to be zigzagged or wavy after which the plant is named.

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Intermediate Bladderwort

Flower: Utricularia intermedia produces small yellow flowers, typically around 10–12 mm across, held singly or in pairs on slender upright stalks (scapes) that rise above the water or damp substrate. Each flower has a two-lipped corolla with a prominent lower lip and short spur, resembling those of U. vulga... Fruit: The fruit is a tiny capsule that contains numerous minute seeds, though Utricularia intermedia reproduces more often vegetatively than by seed. In colder or nutrient-poor habitats, it forms turions (winter buds), which sink and survive at the bottom of the waterbody before resprouting in spring. Fru... Leaves: The plant lacks traditional foliage. Instead, it produces two types of finely divided shoots: green sterile shoots for photosynthesis and pale, root-like shoots that bear numerous small bladder traps (utricles) used to capture minute aquatic invertebrates. This division of function—unique among Brit...

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Nordic Bladderwort

Flower: Utricularia stygia produces small, violet to deep purple flowers on slender, erect stalks (scapes) that rise above the water surface. Each flower is around 6–10 mm across and consists of a two-lipped corolla, with the lower lip often having yellow markings. The flowering period in the UK is typicall... Fruit: The fruit is a tiny capsule containing many minute seeds, but in practice, Utricularia stygia reproduces far more commonly via vegetative means. Like other bladderworts, it overwinters by producing turions—compact, bud-like structures that sink to the bottom and re-sprout in spring. Seed production ... Leaves: This species lacks traditional leaves. Instead, it has finely divided, rootless submerged shoots bearing minute bladder traps (utricles). These bladders are less than 2 mm wide and are used to trap and digest tiny aquatic organisms, such as protozoa and small crustaceans. The traps operate with a va...

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Wavy Bladderwort

Flower: Yellow flowers, up to 15mm across. The lower lip has flat or slightly upturned margins and the spur is 7 or 8mm long. Flowers are on stems between 10 and 20cm in length. This species is similar in appearance to Greater Bladderwort (Utricularia vulgaris) but has paler flowers and the lower lip of Gre... Fruit: The fruits are rarely seen in the British Isles. They are a many-seeded, globular capsule, similar in appearance to a small grape. Leaves: An aquatic perennial species. The green, thread-like, segmented leaves are present on both submerged and aerial stems.

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Blueberry

Flower: Blueberry flowers are small, bell-shaped, pale pink to white, typically hanging in clusters called racemes. They bloom in spring and have a delicate, urn-like shape common to the Vaccinium genus. Fruit: The fruit is a round, fleshy berry, usually blue to dark purple when ripe, measuring about 5–12 mm in diameter. The berries are sweet and juicy, ripening in mid to late summer. Leaves: The leaves are elliptical to ovate, smooth-edged, and dark green, turning red or purplish in autumn. They are arranged alternately on the stems and have a leathery texture.

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