Euphorbia hirsuta

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Euphorbia crispata
• Galarhoeus pubescens
• Tithymalus caesalpini
• Tithymalus mucronata
• Tithymalus pubescens
• Euphorbia hirsuta f. crispata
• Tithymalus sera-comans
• Euphorbia hirsuta f. glabrescens
• Euphorbia platyphyllos subsp. pubescens
• Euphorbia hirsuta f. integrifolia
• Euphorbia pubescens var. subglabra
• Euphorbia hirsuta f. laevis
• Euphorbia platyphyllos var. flavopurpurea
• Euphorbia hirsuta var. leucotricha
• Euphorbia hirsuta f. serrata
• Euphorbia hirsuta f. serrulatifolia
• Euphorbia hirsuta var. subglabra
• Euphorbia hirsuta f. subglabra
• Euphorbia gussoneana
• Euphorbia leucotricha
• Euphorbia pubescens
• Euphorbia pubescens var. crispata
• Euphorbia pubescens var. glabrescens
• Euphorbia pubescens subvar. integrifolia
• Euphorbia pubescens var. laevis
• Euphorbia pubescens var. leucotricha
• Euphorbia pubescens var. serrata
• Euphorbia pubescens subvar. serrulatifolia
• Euphorbia pubescens var. subglabra
• Euphorbia pubescens f. subglabra
• Euphorbia sera-comans
• Euphorbia bonae

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 further classified within the order Malpighiales and the family Euphorbiaceae. Finally, its specific taxonomic placement is within the genus Euphorbia.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily found throughout the Mediterranean regions of Southwestern Europe. Its distribution includes specific locations such as the Baleares and Corse islands. Additionally, the species can be found growing within the mainland territory of France. It also inhabits the coastal and inland areas of Portugal. Finally, the geographical range extends to the island of Sardegna.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Euphorbia hirsuta is characterized by its ability to inhabit a diverse range of altitudinal gradients, spanning from sea level up to an elevation of 1800 m AMSL. This plant shows a particular preference for specific microclimates, frequently colonizing damp places where moisture availability is consistent. Its distribution across such a wide elevational range suggests a versatile physiological capacity to adapt to varying atmospheric pressures and temperature fluctuations, provided the substrate maintains the necessary moisture levels required for its growth.

Elevational range max:

1800 m AMSL

Elevational range min:

0 m AMSL

Habitat :

damp places

Life history

The life history of Euphorbia hirsuta is characterized by its classification as a perennial species, allowing it to persist through multiple growing seasons. In terms of its structural development and survival strategy, the plant functions as a hemicryptophyte, meaning its perenn perennial buds are located at or just below the soil surface, protected by leaf litter or the ground layer during unfavorable conditions. This life form is consistently identified through both its hemi-cryptophyte designation and its specific physiological growth habit, ensuring its longevity and ability to re-emerge following seasonal transitions.

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

The morphology of Euphorbia hirsuta is characterized by its growth form as a non-woody herb, exhibiting a primarily terrestrial habit that can range from terrestrial to semiaquatic environments. The plant is a self-supporting organism that does not function as a climber or an epiphyte, maintaining an independent lifestyle without parasitic tendencies. Its structural development is defined by an erect shoot orientation, with a plant height that typically ranges from a minimum of 0.25 m to a maximum of 1.5 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Plant height max:

1.5 m

Plant height min:

0.25 m

Shoot orientation :

erect

Woodiness :

non-woody

Physiology

The physiology of Euphorbia hirsuta is characterized by a highly efficient metabolic framework and specific morphological adaptations. It utilizes the C4 photosynthetic pathway, an adaptation that allows for enhanced carbon fixation and improved water-use efficiency, particularly in environments where minimizing photorespiration is critical for survival. The vegetative structure is defined by elliptic-shaped leaves that exhibit significant dimensional variation; these leaves typically possess a length ranging from a minimum of 2 cm to a maximum of 4 cm, while their width fluctuates between a minimum of 0.6 cm and a maximum of 1.3 cm. This combination of specialized carbon metabolism and compact leaf dimensions supports the plant's physiological resilience and resource management.

Leaf form :

elliptic

Leaf length max:

4 cm

Leaf length min:

2 cm

Leaf width max:

1.3 cm

Leaf width min:

0.6 cm

Photosynthetic pathway :

C4

Reproduction

The reproduction of Euphorbia hirsuta is characterized by a flowering cycle that typically begins in February and concludes in August, though the timing can be variable across different months. The plant produces red flowers arranged in a cyme inflorescence, which reaches a maximum length of approximately 0.003 m. Following pollination, the plant develops small fruits that measure between 0.3 cm and 0.35 cm in length and maintain a width ranging from 0.35 cm to 0.4 cm. These fruits yield seeds that are notably minute, with a length spanning from 2.2 mm to 2.5 mm and a width ranging from 1.7 mm to 2 mm.

Flower colour :

red

Flowering time :

Feb

Flowering time :

Aug

Fruit length max:

0.35 cm

Fruit length min:

0.3 cm

Fruit width max:

0.4 cm

Fruit width min:

0.35 cm

Inflorescence :

cyme

Inflorescence length max:

0.003 m

Seed length max:

2.5 mm

Seed length min:

2.2 mm

Seed width max:

2 mm

Seed width min:

1.7 mm

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Euphorbia hirsuta has 7 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 24-Methylenecycloartanol, HELIOSCOPINOLIDE A, Pubescenol, Taraxerone, helioscopinolide B.

24-Methylenecycloartanol

1. Journal of natural products

HELIOSCOPINOLIDE A

1. Journal of natural products

Pubescenol

1. Journal of natural products

Taraxerone

1. Journal of natural products

helioscopinolide B

1. Journal of natural products

pubescene D

1. Journal of natural products

vanillin

1. Journal of natural products