Euphorbia nutans
Encyclopedia
Euphorbia nutans is a species of euphorb known by the common names eyebane and nodding spurge. It is native to the eastern United States and parts of South America. It is known as a weed in parts of its native range, as well as in areas where it has been introduced
. This is an annual herb growing erect with pairs of oblong leaves along its stems. The leaf may be up to 3.5 centimeters long, hairy or hairless, and finely toothed. The inflorescence
may be solitary or borne in clusters. Each inflorescence is a cyathium
, with flat white or red appendages surrounding the actual flowers. At the center of the array of appendages are several staminate
flowers surrounding one pistillate
flower. The latter develops into a fruit, which is a capsule about 2 millimeters wide.
Introduced species
An introduced species — or neozoon, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its indigenous or native distributional range, and has arrived in an ecosystem or plant community by human activity, either deliberate or accidental...
. This is an annual herb growing erect with pairs of oblong leaves along its stems. The leaf may be up to 3.5 centimeters long, hairy or hairless, and finely toothed. The inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
may be solitary or borne in clusters. Each inflorescence is a cyathium
Cyathium
A cyathium is one of the specialised pseudanthia forming the inflorescence of plants in the genus Euphorbia . A cyathium consists of:...
, with flat white or red appendages surrounding the actual flowers. At the center of the array of appendages are several staminate
Stamen
The stamen is the pollen producing reproductive organ of a flower...
flowers surrounding one pistillate
Gynoecium
Gynoecium is most commonly used as a collective term for all carpels in a flower. A carpel is the ovule and seed producing reproductive organ in flowering plants. Carpels are derived from ovule-bearing leaves which evolved to form a closed structure containing the ovules...
flower. The latter develops into a fruit, which is a capsule about 2 millimeters wide.