Hartmut H. Hilger

Heliotropium arboreum is a species of flowering plant in the family Heliotropiaceae. It is native to tropical Asia including southern China, Madagascar, northern Australia, and most of the atolls and high islands of Micronesia and Polynesia. Common names include velvetleaf soldierbush, tree heliotrope, veloutier, and octopus bush. It is a shrub or small tree typical of littoral zones reaching a height of 3.6 m (12 ft), with a spread of about 5 m (16 ft).

Pontechium maculatum is a species of flowering plant in the borage family, Boraginaceae. It is the sole species in genus Pontechium. It is a biennial native to parts of Europe and western Asia, ranging from Poland and Austria through the Balkans and Ukraine to eastern European Russia, the Caucasus, Turkey, and Turkmenistan. The species was first described as Echium maculatum by Carl Linnaeus in 1759. In 2000 Böhle & Hilger placed it in its own genus as Pontechium maculatum.

Glandora is a genus of flowering plants in the family Boraginaceae, native to the western and central Mediterranean region; Morocco, Algeria, Portugal, Spain, France, Italy and Greece. It was split from Lithodora in 2008.

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Pontechium maculatum is a species of flowering plant in the borage family, Boraginaceae. It is the sole species in genus Pontechium. It is a biennial native to parts of Europe and western Asia, ranging from Poland and Austria through the Balkans and Ukraine to eastern European Russia, the Caucasus, Turkey, and Turkmenistan. The species was first described as Echium maculatum by Carl Linnaeus in 1759. In 2000 Böhle & Hilger placed it in its own genus as Pontechium maculatum.

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Microparacaryum is a genus of flowering plants in the family Boraginaceae. It includes four species ranging from the eastern Mediterranean and Eritrea to the Arabian Peninsula, Iran, Central Asia, Afghanistan, Pakistan, and the western Himalayas.

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Melanortocarya obtusifolia is a species of flowering plant in the family Boraginaceae. It is the sole species in the genus Melanortocarya. It is an annual plant native to southeastern Europe and the eastern Mediterranean, ranging from Greece and Bulgaria through Turkey, Syria, and Lebanon to Israel. The species was first described as Lycopsis obtusifolia by Carl Ludwig Willdenow in 1798. In 2006 it was moved to its genus Melanortocarya obtusifolia.

Melanortocarya obtusifolia is a species of flowering plant in the family Boraginaceae. It is the sole species in the genus Melanortocarya. It is an annual plant native to southeastern Europe and the eastern Mediterranean, ranging from Greece and Bulgaria through Turkey, Syria, and Lebanon to Israel. The species was first described as Lycopsis obtusifolia by Carl Ludwig Willdenow in 1798. In 2006 it was moved to its genus Melanortocarya obtusifolia.

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