Question: Mitchella and Edraianthus are both a genus of what?

full_context: Document 1: Michauxia: Michauxia is a genus of plants in the Campanulaceae. It contains 7 known species native to southwestern Asia.
Document 2: Campanula garganica: Campanula garganica (Adriatic bellflower), syn. "C. elatines" var. "garganica", is a species of flowering plant in the genus "Campanula" of the family Campanulaceae, native to Southern Europe. It is a small, spreading herbaceous perennial growing to 5 cm . Basal rosettes of leaves bear a profusion of star-shaped blue flowers in summer.
Document 3: Micromeria: Micromeria is a genus of flowering plants in the mint family, Lamiaceae, widespread across Europe, Asia, Africa, and North America, with a center of diversity in the Mediterranean region and the Canary Islands. It is sometimes placed within the genus "Satureja". The name is derived from the Greek words
Document 4: Campanula portenschlagiana: Campanula portenschlagiana syn. "C. muralis", is a species of flowering plant in the family Campanulaceae, native to the Dalmatian Mountains in Croatia. It is a vigorous, low-growing, mound-forming evergreen perennial with deep purple flowers in summer. Common names include Dalmatian bellflower, Adria bellflower and wall bellflower.
Document 5: Campanula cochleariifolia: Campanula cochleariifolia (also Campanula cochlearifolia), common name earleaf bellflower or fairy's-thimble, is a species of flowering plant in the genus "Campanula" of the family Campanulaceae, native to the Pyrenees, Alps, and Carpathian Mountains of Central Europe. It is a rhizomatous herbaceous perennial growing to 10 cm . Clumps of bright green leaves produce nodding pale blue bell flowers on wiry stalks.
Document 6: Callianthemum: Callianthemum is a genus that consists of 24 species of little rhizomatous herbs from high mountains in Europe, Central Asia and East Asia. The botanical name comes from the Greek, which means beautiful flower. The plants are low-growing, ornamental perennials and are lovely to rock garden. Leaves are small and radical. Flowers are showy daisy-like, 1.5in in diameter, with 5-15 white or rose-color petals and nectaries at the base. Blooming in spring.
Document 7: Edraianthus: Edraianthus (rock bells or grassy bells) is a small genus of flowering plants in the bellflower family Campanulaceae. "Edraianthus" species are native to mountains of the Balkan, including Croatia, Bosnia and Serbia, and as far as Romania, Italy and Greece.
Document 8: Rubieae: Rubieae is a tribe of flowering plants in the Rubiaceae family and contains 969 species in 14 genera. The genus "Galium" is responsible for more than two thirds of the species in the tribe. The second largest genus is "Asperula", which contains about 200 species. Unlike the rest of the Rubiaceae family, the tribe contains predominantly perennial and annual herbs with pseudowhorls of leaves and leaflike stipules and is centered in temperate and tropical-mountain regions.
Document 9: Mitchella repens: Mitchella repens (partridge berry, or squaw vine) is the best known plant in the genus "Mitchella".
Document 10: Manettia: Manettia is a genus of flowering plants in the family Rubiaceae. There are between 80 and 123 species. They are distributed in the West Indies, Mexico, and Central and South America. Most are vines. The genus was named after Saverio Manetti.
Document 11: Stewartia: Stewartia (sometimes spelled Stuartia) is a genus of 8-20 species of flowering plants in the family Theaceae, related to "Camellia". Most of the species are native to eastern Asia in China, Japan, Korea, Laos, Myanmar, Thailand, and Vietnam, with two ("S. malacodendron, S. ovata") in southeast North America, from Virginia and Kentucky south to Florida and Louisiana.
Document 12: Mimulus: Mimulus is a plant genus in the family Phrymaceae, which was traditionally placed in family Scrophulariaceae. The genus now contains only seven species, two native to eastern North America and the other five native to Asia, Australia, Africa, or Madagascar. In the past, about 150 species were placed in this genus, most of which have since been assigned to other genera, the majority to genus "Erythranthe". "Mimulus
Document 13: Campanula poscharskyana: Campanula poscharskyana (Serbian bellflower, trailing bellflower) is a semi-evergreen trailing perennial, valued for its lavender-blue star-shaped flowers, native to the Dinaric Alps in former Yugoslavia.
Document 14: Campanula raineri: Campanula raineri (Rainer's bellflower, Rainer's harebell) is a species of flowering plant in the genus "Campanula" of the family Campanulaceae, native to the Swiss and Italian Alps. It is a low-growing herbaceous perennial growing 5 - tall by up to 20 cm wide, with pale lilac bell-shaped flowers in summer. It is suitable for cultivation in the alpinum or rock garden. It spreads by underground runners.
Document 15: Mitchella: Mitchella is a genus of flowering plants in the Rubiaceae family. It is found from China to temperate eastern Asia, and from eastern Canada to Guatemala.
ground_truth: flowering plants