Geraniaceae-Geranium2017-05-31T16:13:33+00:00

Geraniaceae: Geranium Family — Geranium

Alderney Crane’s-bill – Geranium core-core

Blooms:

Feb–Sept

Plant Height:

30–50 cm

Flower Size:

Medium

Origin:

South America

Habitat:

Grassy places

Notes:

The plant is ascending to erect; its flowers have pink petals and visible veins. Anthers are creamy-white with purple stripes. Sepals have prominent glabrous awns. Leaves are roundish and deeply dissected but with broader lobes than Cut-leaved Geranium (Geranium dissectum). Stems have short backward-facing hairs. Fruits curl up from their base. [Formerly misidentified as New Zealand Geranium (Geranium retrorsum), an Australian native.]

Cut-leaved Geranium – Geranium dissectum

Blooms:

Mar–July

Plant Height:

30–60 cm

Flower Size:

Small

Origin:

Eurasia, North Africa

Invasive?

Yes – limited

Habitat:

Open, disturbed sites

Notes:

Common and somewhat invasive, this has flowers of a particularly vivid pink. The petals are broad and shallowly notched. The leaves are deeply dissected.  The sepal tips have a bristly awn.

Dove’s Foot Geranium – Geranium molle

Blooms:

Feb–Aug

Plant Height:

10–45 cm

Flower Size:

Small

Origin:

Eurasia, North Africa

Habitat:

Open to shaded sites, disturbed ground

Notes:

Another common geranium with distinctive, deeply notched petals which are more clearly separated and a paler pink than those of Cut-leaved Geranium (Geranium dissectum). Sepals may be mucronate (i.e. with a short point tip) but lack the awn found in Cut-leaved Geranium. Leaves are variable, often more or less round and deeply dissected or palmately lobed. As with many flowers, white forms are occasionally found.

Round-leaved Geranium – Geranium rotundifolium

Blooms:

May

Plant Height:

10–40 cm

Flower Size:

Small

Origin:

Eurasia, North Africa

Habitat:

Open, disturbed sites

Notes:

Another common geranium with petals that are pale rose-purple fading to white in the center with a slight indentation at the tip which hardly justifies the term “notch”. Sepals are soft-hairy and have short, bristly awns. Leaves are variable, often more or less round with shallow, rounded lobes, sometimes more angular with pointed lobes. Easily confused with the native Bicknell’s Geranium (Geranium bicknellii) which has similar flowers but more deeply dissected leaves and is only found above 600 m.

Robert Geranium / Herb Robert – Geranium robertianum

Blooms:

Apr–Sept

Plant Height:

10–50 cm

Flower Size:

Small

Origin:

Eurasia, North Africa

Habitat:

Open to shaded sites

Notes:

An erect, many-stemmed plant; extremely common in its native Europe but uncommon in Monterey County.  The petals are broad and unnotched but clearly separated, pink in color with white or occasionally darker pink stripes.  Leaves are somewhat fern-like and stems are often reddish.