Senna, the sennas, is a large genus of flowering plants in the legume family. This diverse genus is native throughout the tropics, with a small number of species in temperate regions. The number of species is estimated to be from about 260 to 350. The type species for the genus is Senna alexandrina. About 50 species of Senna are known in cultivation.
Senna covesii is a perennial subshrub in the family Fabaceae, native to the Mojave Desert and Sonoran Desert in southeastern California, southern Nevada, and Arizona in the United States, and northern Baja California in Mexico. It is found on desert plains and in sandy washes between 500 and 600 m above sea level, and is very common in Joshua Tree National Park. The specific epithet honors ornithologist Elliott Coues.
Senna artemisioides, commonly known as silver cassia, is a species of flowering plant in the family Fabaceae and is endemic to Australia, where it is found in all mainland states and territories. It is a small, woody shrub with silver-green leaves and yellow flowers.
Murraya paniculata, commonly known as orange jasmine, orange jessamine, china box or mock orange, is a species of shrub or small tree in the family Rutaceae and is native to South Asia, Southeast Asia and Australia. It has smooth bark, pinnate leaves with up to seven egg-shaped to elliptical leaflets, fragrant white or cream-coloured flowers and oval, orange-red berries containing hairy seeds.
Senna italica, the Port Royal senna, Italian senna, or Senegal senna is a legume tree in the genus Senna. It is recognized by many other common names based on the regions it grows in. In India, it is used to produce a powder for treating hair-related diseases which is known as “neutral henna”. Whereas, in some parts of the world, this species is cultivated for the leaves which yield the drug senna, known commonly as Senna glycoside, which in turn is the base for a laxative. Senegal senna is easily distinguishable through its many distinctive features. There are 3 subspecies of this plant based on the size of the inflorescence and the length of the petiole. The subspecies are italica, micrantha, and arachoides. In many regions, this plant is cultivated commercially and medicinally.
Senna acclinis, commonly known as rainforest cassia or brush senna, is a species of flowering plant in the family Fabaceae and is endemic to near-coastal areas of eastern Australia. It is a shrub with pinnate leaves and bright golden yellow flowers in groups of two to five and long, narrow seed pods. It is similar to other species of Senna that are environmental weeds.
Zanthoxylum rhetsa, commonly known as Indian prickly ash, is a species of flowering plant in the family Rutaceae and occurs from India east to the Philippines and south to northern Australia. It is a deciduous shrub or tree with cone-shaped spines on the stems, pinnate leaves with between nine and twenty-three leaflets, panicles of white or yellowish, male and female flowers, followed by spherical red, brown or black follicles.
Boronia latipinna, commonly known as the Grampians boronia, is a plant in the citrus family Rutaceae and is endemic to the Grampians in Victoria. It is an erect, woody shrub with pinnate leaves and pink or white, four petalled flowers.
Boronia kalumburuensis is a plant in the citrus family Rutaceae and is endemic to the Kalumburu area of Western Australia. It is an erect or sprawling shrub with many branches, pinnate leaves and white to pink four-petalled flowers with the sepals longer and wider than the petals.
Boronia tolerans is a plant in the citrus family, Rutaceae and is endemic to a small area in the Northern Territory in Australia. It is an erect shrub with many branches, pinnate leaves and white, four-petalled flowers. It is only known from Nitmiluk National Park.
Boronia wilsonii is an erect shrub that is endemic to northern Australia. Its branches, leaves and backs of the flowers are densely covered with woolly hairs. The petals are white to pink or burgundy-coloured.
Gompholobium karijini is a species of flowering plant in the family Fabaceae and is endemic to the north-west of Western Australia. It is an erect, openly-branched shrub with pinnate leaves with five to ten pairs of leaflets, and racemes of yellow to orange and creamy-yellow, pea-like flowers.
Gompholobium polyzygum is a species of flowering plant in the family Fabaceae and is endemic to north-western Australia. It is an erect or prostrate shrub with pinnate leaves each with sixteen to twenty-one pairs of leaflets, and yellow-orange and greenish, pea-like flowers.
Dodonaea stenozyga, commonly known as desert hop-bush, is a species of flowering plant in the family Sapindaceae and grows in southern parts of Australia. It is a small, upright shrub with small clusters of flowers and linear leaves.
Senna aciphylla, commonly known as sprawling senna or Australian senna, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a sprawling shrub with pinnate leaves with eight to twelve pairs of linear to narrowly elliptic leaflets, and yellow flowers in pairs or groups of three.
Senna barclayana, commonly known as smooth senna or pepper-leaf senna, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a herbaceous perennial or subshrub with pinnate leaves with six to ten pairs of lance-shaped or narrowly elliptic leaflets, and yellow flowers in groups of six to ten.
Senna barronfieldii, commonly known as southern cassia, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is an erect shrub with more or less glabrous, pinnate leaves with eight to thirteen pairs of lance-shaped or elliptic leaflets, and yellow flowers in groups of three to five.
Senna cardiosperma is a species of flowering plant in the family Fabaceae and is endemic to the western half of Australia. It is an erect shrub or small tree with pinnate leaves, the number and shape of the leaflets depending on subspecies, yellow flowers with ten fertile stamens in each flower, and flat pods.
Senna charlesiana is a species of flowering plant in the family Fabaceae and is endemic to Western Australia. It is an erect shrub with cylindrical leaves, sometimes with one or two pairs of cylindrical leaflets, and yellow flowers arranged in pairs or groups of three or four, with ten fertile stamens in each flower.
Senna circinnata, commonly known as coiled cassia, is a species of flowering plant in the family Fabaceae and is endemic to eastern Australia. It is a shrub or small tree with pinnate leaves with one to three pairs of egg-shaped leaflets, and small groups of yellow flowers in upper leaf axils.
