Question: Which plant, Buddleja or Burchardia, is an herb named after a German botanist?

full_context: Document 1: Buddleja racemosa: Buddleja racemosa, commonly known as the Wand (or Texas) Butterfly Bush, is endemic to the southern edge of the limestone Edwards Plateau in Texas, United States, from Austin to Rocksprings, growing around streams, creeks and springs at elevations of 250 – 750 m. The plant was first named and described by John Torrey in 1859.
Document 2: Buddleja: Buddleja, or Buddleia (also historically given as "Buddlea"), commonly known as the butterfly bush, is a genus comprising over 140 species of flowering plants endemic to Asia, Africa, and the Americas. The generic name bestowed by Linnaeus posthumously honoured the Reverend Adam Buddle (1662–1715), an English botanist and rector, at the suggestion of Dr. William Houstoun. Houstoun sent the first plants to become known to science as buddleja ("B. americana") to England from the Caribbean about 15 years after Buddle's death.
Document 3: Buddleja × lewisiana: Buddleja × lewisiana is an American hybrid of "Buddleja madagascariensis" and "Buddleja asiatica" first described and named by T H Everett in 1947, and introduced to commerce in 1958. The taxonomy of the plant remains a matter of contention.
Document 4: Darwinia (plant): Darwinia, sometimes commonly known as mountain bells or simply bells, is a genus of about 70 species of evergreen shrubs in the family Myrtaceae, endemic to southeastern and southwestern Australia. The majority are native to southern Western Australia, but a few species occur in South Australia, New South Wales and Victoria. The genus was named in honour of Erasmus Darwin, grandfather of Charles Darwin by Edward Rudge in 1816. Most darwinias grow to a height of between 0.2 and 3 m and many are prostrate shrubs. Most have small, simple leaves and the flowers are often grouped together, each flower with five red, white or greenish petals and ten stamens. In many species, the flowers are surrounded by large, colourful bracts, giving rise to their common names.
Document 5: Bismarckia: Bismarckia is a monotypic genus of flowering plant in the palm family endemic to western and northern Madagascar where they grow in open grassland. The genus is named for the first chancellor of the German Empire Otto von Bismarck and the epithet for its only species, Bismarckia nobilis, comes from Latin for 'noble'.
Document 6: Buddleja delavayi: Buddleja delavayi is a Chinese species discovered by Forrest in the Tali Range above Dali (2000 – 2500 m elevation), Yunnan, in 1910; it is also found in Xizang (Tibet). The species was named for l'Abbé Delavay, the French missionary and plant collector, by Gagnepain in 1912. The shrub is of interest to the botanist because of its unique (within the genus) resting buds and the different types of inflorescence produced through the year.
Document 7: Blandfordia nobilis: Blandfordia nobilis, commonly known as Christmas bells, is a tufted perennial herb native to eastern Australia. Known as Gadigalbudyari in the Cadigal language of the local Indigenous Australians. Known as Reminé to the Aborigines of the Brune Island and South Tasmania region.
Document 8: Blandfordia: Blandfordia is a genus of flowering plants, placed in the family Blandfordiaceae of the order Asparagales of the monocots. The genus is native to eastern Australia. Plants in this genus are commonly referred to as Christmas bells due to the shape of their flowers and the timing of their flowering season in Australia. "Blandfordia" was named by English botanist James Edward Smith in 1804 in honour of George Spencer-Churchill, 5th Duke of Marlborough, the Marquis of Blandford.
Document 9: Burchardia: Burchardia is a genus of herbs that are endemic to Australia. The genus is named for Johann Heinrich Burkhardt, a German botanist.
Document 10: Buddleja utahensis: Buddleja utahensis is a species of Buddleja endemic to the southwestern United States (northwest Arizona, eastern California, southern Nevada, and southwestern Utah), where it is known by the common names Utah butterfly bush and Panamint butterfly bush. Named and described by Coville in 1892, the shrub favours limestone outcrops at elevations of 700–2000 m,
Document 11: Barbarea australis: Barbarea australis is a morphologically and ecologically typical "Barbarea" species with an unusual distribution: it is an endemic and threatened species from Tasmania. The leaves have a large end-lobe and only few side lobes, much like the leaf-shape of "Barbarea stricta" and "Barbarea orthoceras". With regard to defence chemicals (glucosinolates), it is similar to other members of the genus.
Document 12: Bursera: Bursera, named after the Danish botanist Joachim Burser (1583-1639), is a genus with about 100 described species of flowering shrubs and trees varying in size up to 25 m high. They are native (often for many species endemic) to the Americas, from the southern United States south through to northern Argentina, in tropical and warm temperate forest habitats.
Document 13: Buddleja americana: Buddleja americana is the most widespread of all the "Buddleja" species native to the Americas, its range extending south from Tamaulipas, Mexico, through Central America and much of the West Indies into South America, reaching eastward to Venezuela, westward as far as the Galapagos, and south to Bolivia. It occurs at elevations from sea level to 2500 m, in a variety of habitats, including cloud forest, mountain savanna, pine - oak forest, and rocky slopes near rivers. It also invades fields and roadsides.
Document 14: Buddleja salviifolia: Buddleja salviifolia, common names Sage Bush and Sagewood, is endemic to much of southern and eastern Africa, from Kenya and Angola south, where it grows on rocky hillsides, along forest margins and watercourses. The species was described and named by Lamarck in 1792.
Document 15: Backhousia: Backhousia is a genus of thirteen currently known species of flowering plants in the family Myrtaceae. All the currently known species grow naturally only (endemic) in Australia in the rainforests and seasonally dry forests of Queensland, New South Wales and Western Australia.
ground_truth: Burchardia