coastal bush lupine

Names and Synonyms

Common Names

• coastal bush lupine
• tree lupine
• yellow bush lupine
• Tree Lupin
• bush lupine

Scientific Names

Accepted name

Synonyms

• Lupinus arboreus var. eximius
• Lupinus arborescens
• Lupinus eximius
• Lupinus arboreus f. albus
• Lupinus barilochensis
• Lupinus arboreus f. aureus
• Lupinus propinquus

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. It is classified within the order Fabales and the family Fabaceae. Finally, it is categorized under the genus Lupinus, specifically as the species Lupinus arboreus.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a widespread distribution across several distinct regions in the Southern and Northern Hemispheres. In Northern Europe, it can be found growing within the territories of Great Britain and Ireland. Its presence extends to Australia, where it is specifically documented in Tasmania and Victoria. Additionally, the species is established in the northern parts of New Zealand. These varied locations highlight the plant's ability to thrive in diverse temperate environments.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Lupinus arboreus is defined by its preference for specific environmental niches, primarily characterized by its establishment in coastal habitats. This species thrives within a distinct vertical distribution, occupying an elevational range that begins at 500 m AMSL and extends up to a maximum of 1000 m AMSL. By situating itself within these maritime and mid-elevation zones, the plant adapts to the unique atmospheric and soil conditions inherent to coastal landscapes.

Elevational range max:

1000 m AMSL

Elevational range min:

500 m AMSL

Habitat :

Coastal

Life history

The life history of Lupinus arboreus is characterized by its status as a perennial plant, allowing it to persist through multiple growing seasons. As a phanerophyte, specifically categorized within the phanerophyte life forms, its regenerative buds are elevated well above the ground, facilitating its structural development. This species maintains an evergreen deciduousness, retaining its foliage throughout much of its cycle to support continuous physiological processes.

Deciduousness :

evergreen

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Lupinus arboreus is characterized by a woody growth form, typically manifesting as a shrub. This species is a terrestrial plant that functions as a self-supporting organism, lacking any climbing or parasitic tendencies, and it maintains an independent life cycle. In terms of stature, the plant exhibits significant vertical development, reaching a mean height of approximately 1.85 m, with maximum recorded heights extending up to 2.5 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

shrub

Parasite :

independent

Plant height max:

2.5 m

Plant height mean:

1.85 m

Woodiness :

woody

Physiology

The physiology of Lupinus arboreus is characterized by its highly efficient metabolic processes, specifically utilizing a C3 photosynthetic pathway for carbon fixation. This pathway involves the direct fixation of atmospheric carbon dioxide through the enzyme Rubisco within the mesophyll cells, a method common among many temperate woody shrubs. Furthermore, the plant exhibits a specialized symbiotic relationship with nitrogen-fixing bacteria, typically residing within root nodules. This biological nitrogen fixation allows the plant to convert atmospheric nitrogen into a bioavailable form, such as ammonia, significantly enhancing its ability to thrive in nitrogen-limited soils and contributing to its overall vigor and ecological success.

Nitrogen fixer :

yes

Photosynthetic pathway :

C3

Reproduction

The reproduction of Lupinus arboreus is driven by biotic pollination processes, specifically utilizing an insect pollination syndrome to facilitate fertilization. Following successful pollination, the plant develops fruit that reaches an average length of 6 cm. The resulting seeds are relatively uniform in size, with a consistent seed length of 5 mm (ranging from a minimum to a maximum of 5 mm) and a mean seed mass of approximately 0.0388 g, though individual seed mass can vary between 0.0229 g and 0.0328 g. Dispersal is achieved through an autochorous syndrome, where seeds are released via the plant's own mechanisms. Notably, asexual reproduction is absent in this species, meaning it relies entirely on sexual reproduction for the propagation of its offspring.

Dispersal syndrome :

autochorous

Fruit length mean:

6 cm

Pollination syndrome :

insect

Pollination syndrome :

biotic

Reproduction asexual :

absent

Seed length mean:

5 mm

Seed mass max:

0.032783 g

Seed mass mean:

0.0388495 g

Seed mass min:

0.02293 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Lupinus arboreus has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include L-Asparaginase.

L-Asparaginase

1. Plant molecular biology