''Scorpiurus muricatus'', the caterpillar-plant or prickly scorpion's-tail, is an

annual Annual may refer to: * Annual publication, periodical publications appearing regularly once per year **Yearbook ** Literary annual * Annual plant * Annual report * Annual giving * Annual, Morocco, a settlement in northeastern Morocco * Annuals (b ...

leguminous A legume () is a plant in the family Fabaceae (or Leguminosae), or the fruit or seed of such a plant. When used as a dry grain, the seed is also called a pulse. Legumes are grown agriculturally, primarily for human consumption, for livestock for ...

plant native to southern Europe and

Greater Syria Syria (Hieroglyphic Luwian: 𔒂𔒠 ''Sura/i''; gr, Συρία) or Sham ( ar, ٱلشَّام, ash-Shām) is the name of a historical region located east of the Mediterranean Sea in Western Asia, broadly synonymous with the Levant. Other s ...

with tiny pea-like flowers and

simple leaves A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, ste ...

uncharacteristic of a

legume A legume () is a plant in the family Fabaceae (or Leguminosae), or the fruit or seed of such a plant. When used as a dry grain, the seed is also called a pulse. Legumes are grown agriculturally, primarily for human consumption, for livestock f ...

. Its contorted, pubescent pods give rise to its common name "prickly caterpillar". Extracts of the species have been found to have

allelopathic Allelopathy is a biological phenomenon by which an organism produces one or more biochemicals that influence the germination, growth, survival, and reproduction of other organisms. These biochemicals are known as allelochemicals and can have ben ...

effects on

microbes A microorganism, or microbe,, ''mikros'', "small") and ''organism'' from the el, ὀργανισμός, ''organismós'', "organism"). It is usually written as a single word but is sometimes hyphenated (''micro-organism''), especially in olde ...

of the genus ''

Fusarium ''Fusarium'' is a large genus of filamentous fungi, part of a group often referred to as hyphomycetes, widely distributed in soil and associated with plants. Most species are harmless saprobes, and are relatively abundant members of the soil mi ...

'' due to the high concentration of

phytoalexin Phytoalexins are antimicrobial substances, some of which are antioxidative as well. They are defined, not by their having any particular chemical structure or character, but by the fact that they are defensively synthesized ''de novo'' by plants t ...

s in the plants' tissues. This is mainly a garden plant used as a

groundcover Groundcover or ground cover is any plant that grows over an area of ground. Groundcover provides protection of the topsoil from erosion and drought. In an ecosystem, the ground cover forms the layer of vegetation below the shrub layer known as t ...

. Its densely haired pods may be added to salads for interest, and its leaves used as a salad herb in some Mediterranean countries.

References

Loteae Plants described in 1753 Taxa named by Carl Linnaeus Flora of Malta {{Loteae-stub