Christian von Steven

Brunnera is a genus of flowering plants in the family Boraginaceae. They are rhizomatous perennials, native to the woodlands of Eastern Europe and North West Asia. They have hairy leaves and sprays of blue flowers in spring. Numerous cultivars are available, which are valued as groundcover in dappled shade. Some possess variegated foliage. The best known species is B. macrophylla, known as Siberian bugloss. The genus name honors the Swiss botanist Samuel Brunner. The common name "bugloss", meaning ox tongue, originates from Greek and probably refers to the texture and shape of the leaves.

Staphylea colchica, the Caucasian bladdernut, Colchis bladdernut, or Georgian: ჯონჯოლი, jonjoli or djondjoli, is an ornamental shrub in the Staphyleaceae family. It is native to western Georgia. Its binomial name is derived from the western Georgian kingdom of Colchis. This small tree (6–10 feet) is a rapidly growing deciduous species. It grows best in well-drained and partly shaded locations. Although it produces fragrant flowers and fruit, it spreads often by suckers. Its buds, preserved in brine and seasoned with raw onion and vegetable oil, are a common dish in Georgia.

Tilia dasystyla is a deciduous lime tree species. It contains the following subspecies: T. dasystyla subsp. caucasica (V.Engl.) Pigott (syn. T. begoniifolia, T. caucasica, T. platyphyllos subsp. caucasica, T. rubra var. begoniifolia, T. rubra subsp. caucasica) – northern Iran, northern and western Turkey, Caucasus, and Crimea T. dasystyla subsp. dasystyla – Crimea

Quercus hartwissiana, the Strandzha oak (Bulgarian: странджански дъб), is a species of oak, native to southeastern Bulgaria, northern Asia Minor along the Black Sea, and the Caucasus. It was described by the Finnish-born Russian botanist and entomologist Christian von Steven in 1857.

Colchicum speciosum is a species of flowering plant in the family Colchicaceae, native to mountainous areas of northern Turkey, the Caucasus and northern Iran. Growing to 18 cm (7 in) tall by 10 cm (4 in) wide, it is an herbaceous perennial growing from corms. C. speciosum blooms in the fall, producing reddish/violet flowers on stems up to 30 centimetres (12 in) tall without any leaves present. The strap-like leaves grow in the spring, then yellow, wither and die back as summer progresses. The flowers strongly resemble those of the crocus, the familiar spring-flowering bulb; hence the common

Allium guttatum, spotted garlic, is a species of wild garlic native to Morocco, Algeria, Tunisia, Libya, Portugal, Spain, France, Italy, Sardinia, Sicily, the Balkan Peninsula, the Aegean Islands, Turkey, Cyprus, Romania, and Ukraine (including Crimea). Described in 1809, by 1819 it was being cultivated in British gardens as an ornamental.

Iris iberica is a plant species in the genus Iris, it is also in the subgenus Iris and in the section Oncocyclus. It is a rhizomatous perennial, from the Caucasus Mountains of Armenia, eastern Georgia, and western Azerbaijan. It has narrow, glaucous, gray-green and sickle shaped leaves, short stem holding a single flower in late spring. Which has a pale background (white, cream or pale blue) covered with heavy veining in pale mauve, violet, dark purple, maroon or purple-brown. It has a black or dark purple signal patch and a brown or purple-brown beard. Although, it has many hybrid forms dues

Callipeltis is a genus of flowering plants in the family Rubiaceae. It was originally described in 1829. The genus is found in Spain, North Africa, the Middle East, the Arabian Peninsula, and Central Asia as far east as Pakistan and Kazakhstan.

Stipa tirsa is a species of perennial grass native to Europe and temperate Asia. Culms are 40–100 cm long; leaf blades are filiform, involute, and 1–2 mm wide.

Crambe cordifolia, the greater sea-kale, colewort or heartleaf crambe ( syn. Crambe glabrata DC.), is a species of flowering plant in the family Brassicaceae, native to the Caucasus. It has gained the Royal Horticultural Society's Award of Garden Merit.

Trigonotis is a genus of flowering plants belonging to the family Boraginaceae. It includes 70 species which range from southern European Russia to Asia and New Guinea.

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Iris paradoxa is a species of flowering plant native to western Asia. It has large upright petals and smaller lower petals, which is unique amongst most iris forms. They come in various shades from white, lavender, mauve, medium purple, violet, dark purple to black. It has a black or purplish black beard on the lower petals. It comes from the region of Transcaucasia, and is found in the countries of Iran, Turkey, Armenia and in Azerbaijan.

Eremurus altaicus is a species of flowering plant in the family Asphodelaceae, native from Siberia to Mongolia. It was first described by Peter Simon von Pallas in 1779 as Asphodelus altaicus.

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Taraxacum hybernum, also known as krim-saghyz, or Autumn dandelion, is a perennial species of flowering plant in the family Asteraceae. In dry spring it produces only a rosette of leaves. In the wild, it blooms in spring or autumn, depending on moisture conditions, as a cultivated plant it has been reported to have two flowerings in one season.

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Colchicum laetum is a species of Colchicum found in south east Russia through to the Caucasus. A plant known in cultivation as C. laetum 'Pink Star' is thought to be a selection of Colchicum × byzantinum. It has flowers which are pale purple-pink with rounded ends; the petals of each bloom are often held parallel to the soil surface.

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Veronica crista-galli, the crested field-speedwell, is an annual flower in the family Plantaginaceae native from Iran north to the North Caucasus.

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Corispermum pallasii, common name Pallas bugseed, is a plant apparently native to Siberia but naturalized in Europe, Canada, and the Great Lakes Region of the United States. It is a branched herb growing on sand dunes and other sandy soils. This plant is named after botanist and zoologist Peter Simon Pallas and was published by Stevens as Corispermum pallasii in Mém. Soc. Imp. Naturalistes Moscou. 5: 336. 1817. Subspecies: Corispermum pallasii subsp. membranaceum (Bisch. ex Shnittspalm) Tzvelev (synonym: Corispermum membranaceum (Bisch. ex Shnittspalm) Iljin)

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Androsace albana is a species of flowering plant in the primrose family, Primulaceae. It is native to Iran, the Transcaucasus and Turkey. It was first described by Christian von Steven in 1812.