Alliaceae2017-08-17T06:18:12+00:00

   Alliaceae: Onion Family

Sierra Onion – Allium campanulatum

Blooms:

Mar–Oct

Plant Height:

16–30 cm

Flower Size:

Small

Origin:

Native

Habitat:

Dry mountain slopes above 600 m

Notes:

A comparatively small plant with leaves generally withered by flowering. Striking rose to purple flowers with a darker purple crescent at the base of each petal.

Crinkled Onion – Allium crispum

Blooms:

Mar–May

Plant Height:

15–35 cm

Flower Size:

Medium

Origin:

Native

 Habitat:

Heavy soil on inland hills

Notes:

Distinguished by the toothed, curled (“crisped”) margins of the inner petals. The deep rose-purple flowers are in open umbels. 2 or 3 leaves, shorter than the stem.

Hickman’s Onion – Allium hickmanii

Blooms:

Mar–May

Plant Height:

5–17 cm

Flower Size:

Medium

Origin:

Native

Rare or endangered

Rare – 1b.2

 Habitat:

Moist grassland near coast

Notes:

Generally much smaller than its reported maximum height of 17 cm and challenging to spot in long grass,  Petals are white to pink, more or less equal in size. 1 or 2 narrow leaves, often longer than the stem.

Three-cornered Onion – Allium triquetrum

Blooms:

Mar–Apr

Plant Height:

10–40 cm

Flower Size:

Small

Origin:

Europe

Habitat:

Woodland, moist places

Notes:

Very common garden escape.  Distinguished by its pure white flowers with a dark green stripe in the center of each petal and sharply triangular stem.

One-leaved Onion – Allium unifolium

Blooms:

May–June

Plant Height:

10–80 cm

Flower Size:

Medium

Origin:

Native

Habitat:

Moist places

Notes:

Despite its name, this onion has 2–3 leaves which are shorter than the stem. The inflorescence has 14–35 flowers, pink or white. 11–15 mm long with 6 ovary crests in 3 pairs, separated by a longitudinal ridge.