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Lupinus bicolor

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Lupinus bicolor
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Fabales
Family:
Fabaceae
Subfamily:
Faboideae
Genus:
Lupinus
Species:
L. bicolor
Binomial name
Lupinus bicolor

Lupinus bicolor is a species of lupine known as the miniature lupine, Lindley's annual lupine, or bicolor lupine. [1]

It is a showy flowering annual or perennial plant native to western North America, from northwestern Baja California, throughout California, and north to British Columbia. It is is found in diverse habitats below 3,000 feet (910 m), including: grasslands; chaparral; oak, mixed conifer and Joshua tree woodlands; coastal sage scrub; and open conifer forests. [1] It often shares habitats with other prolifically blooming spring and early summer wildflowers, including the California poppy. [2]

Description

Lupinus bicolor has a short, hairy stem and thin, palmately-arranged leaves.

The inflorescence is short for a lupine, at up to 8 centimetres (3.1 in) tall. As its name suggests the flowers are usually two colors, with one often a deep blue. The other color is often white and sometimes a light purple or magenta. There are sometimes small speckles or spots on the petals.

The plant's hairy pods are quite small, only a couple of centimeters long and very thin, and they contain tiny brownish peas.

Varieties

This plant can be variable in appearance, and there are several varieties/subspecies whose relationships are as yet unclear. Varieties include: [3]

  • Lupinus bicolor var. rostratus — endemic to California.
  • Lupinus bicolor var. tridentatus — endemic to California.
  • Lupinus bicolor var. trifidus — endemic to California.
  • Lupinus bicolor var. umbellatus — endemic to California.

Cultivation

Lupinus bicolor is cultivated as an ornamental plant, from seed sown in native plant, drought tolerant, and wildlife gardens, and in natural landscaping and habitat restoration projects. [2] [4]

The plants are of value to pollinators, including native bees and bumble bees. [2]

References

  1. ^ a b Jepson: Lupinus bicolor
  2. ^ a b c Lady Bird Johnson Wildflower Center, NPIN−Native Plant Information Network: Lupinus bicolor
  3. ^ USDA: Subordinate taxa of Lupinus bicolor
  4. ^ Las Pilitas Horticulture Database: Lupinus bicolor (Pigmy-leaved Lupine)
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