cape leadwort

Names and Synonyms

Common Names

• Quaker
• Quaker Blossom
• Cape leadwort
• plumbago

Scientific Names

Accepted name

Synonyms

• Plumbago capensis var. alba
• Plumbago capensis f. alba
• Plumbagidium auriculatum
• Plumbago alba
• Plumbago auriculata f. alba
• Plumbago capensis
• Plumbago grandiflora

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. Within the order Caryophyllales, it is classified under the family Plumbaginaceae. Finally, it is identified by the genus Plumbago, with the specific species being Plumbago auriculata.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a broad distribution across several regions of Southern Europe. In Southwestern Europe, it can be found inhabiting the landscapes of Spain and Portugal. Its presence also extends to the Balearic Islands within the same southwestern territory. Moving toward Southeastern Europe, the species is documented growing in Greece. Finally, its geographical range includes the various territories of Italy.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Plumbago auriculata is characterized by a broad altitudinal distribution that allows it to inhabit diverse topographical landscapes. The species demonstrates remarkable adaptability to varying vertical gradients, ranging from sea level up to a maximum elevation of 2600 m AMSL. Across its natural range, the plant maintains a mean elevation of approximately 1350 m AMSL, suggesting a preference for mid-altitude environments while remaining capable of colonizing both low-lying coastal areas and higher montane regions. This wide elevational breadth indicates an ecological plasticity that enables the species to endure a variety of temperature regimes and atmospheric pressures found across different mountain profiles.

Elevational range max:

2600 m AMSL

Elevational range mean:

1350 m AMSL

Elevational range min:

0 m AMSL

Life history

The life history of Plumbago auriculata is characterized by its status as a perennial plant, allowing it to persist through multiple growing seasons. As a chamaephyte, its growing buds are located close to the soil surface, a life form that influences its structural development and resilience within its habitat. Furthermore, the species maintains an evergreen deciduousness, ensuring that it retains its foliage throughout the year rather than shedding it seasonally.

Deciduousness :

evergreen

Life form :

chamaephyte

Lifecycle :

perennial

Morphology

The morphology of Plumbago auriculata is characterized by its growth form as a woody shrub or forb, exhibiting a self-supporting structure that does not require external support as a vine or liana. As a terrestrial plant, it is neither aquatic nor an epiphyte, and it functions as an independent organism rather than a parasite. The plant displays a scandent shoot orientation, with its height varying significantly depending on environmental conditions, ranging from a minimum of 0.3 m to a maximum of 4 m, with a mean height typically reaching approximately 1.5 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

shrub

Growth form :

forb

Parasite :

independent

Plant height max:

4 m

Plant height mean:

1.5 m

Plant height min:

0.3 m

Shoot orientation :

scandent

Woodiness :

woody

Physiology

The physiology of Plumbago auriculata is characterized by a C3 photosynthetic pathway, which governs its carbon fixation and energy production processes. The plant exhibits a non-succulent morphology, lacking specialized water-storage tissues, and does not function as a nitrogen fixer, relying instead on external soil nutrients for its metabolic requirements. Its foliar structure is defined by an alternate leaf arrangement, where the leaves vary in size with a minimum length of 3 cm and a maximum length of 7 cm. The leaves possess an elliptic form, with widths ranging from a minimum of 1.5 cm to a maximum of 2.5 cm.

Leaf arrangement :

alternate

Leaf form :

elliptic

Leaf length max:

7 cm

Leaf length min:

3 cm

Leaf width max:

2.5 cm

Leaf width min:

1.5 cm

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Succulence :

no

Reproduction

The reproduction of Plumbago auriculata is characterized by a distinct flowering phenology and specific pollination mechanisms. The plant produces blue flowers arranged in an umbel inflorescence, with individual flowers reaching a maximum length of 4 cm. The flowering period typically begins in April and concludes in June, though it can be variable throughout the year. This reproductive cycle relies on a biotic pollination syndrome, specifically attracting insects such as butterflies to facilitate fertilization. Following successful pollination, the plant develops fruit in the form of a capsule. This fruit is dehiscence-type, meaning it opens at maturity to release seeds. The dispersal of the species is categorized as anthropochorous, involving movement aided by human activity.

Dehiscence :

dehiscent

Dispersal syndrome :

anthropochorous

Flower colour :

blue

Flower length max:

4 cm

Flowering time :

Apr

Flowering time :

Jun

Fruit type :

capsule

Inflorescence :

umbel

Pollination syndrome :

insect

Pollination syndrome :

butterfly

Pollination syndrome :

biotic

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Plumbago auriculata has 1 reported plant parts identified across 2 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf.

Leaf

1. Frontiers in chemistry
2. Biotechnology and applied biochemistry

Chemicals

Plumbago auriculata has 8 reported phytochemicals identified across 2 scientific publications and several other databases. The most consistently reported chemicals include Plumbagin, DICHLOROMETHANE, Flavonoids, SAPONIN, STARCH.

Plumbagin

1. Journal of natural medicines
2. Frontiers in plant science
3. Frontiers in chemistry
4. Indian journal of experimental biology
5. Biotechnology and applied biochemistry

DICHLOROMETHANE

1. Toxicology letters

Flavonoids

1. Frontiers in chemistry

SAPONIN

1. Frontiers in plant science

STARCH

1. Frontiers in chemistry

Saponins

1. Frontiers in plant science

citric acid

1. Frontiers in chemistry

polyphenols

1. Frontiers in chemistry

Medicinal Uses

Plumbago auriculata has 4 reported medicinal uses identified across 2 scientific publications and several other databases. The most consistently reported uses include Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus.

Most Reported Uses

Preparations