Question: Does Roystonea or Dionysia have more species?

full_context: Document 1: Roystonea regia: Roystonea regia, commonly known as the Cuban royal palm or the Florida royal palm is a species of palm which is native to Mexico and parts of Central America and the Caribbean. A large and attractive palm, it has been planted throughout the tropics and subtropics as an ornamental tree. Although it is sometimes called "R. elata", the conserved name "R. regia" is now the correct name for the species. Populations in Cuba and Florida were long seen as separate species, but are now considered to belong to a single species.
Document 2: Cyclamen purpurascens: Cyclamen purpurascens (Alpine, European or purple cyclamen) is a species of flowering plant in the genus "Cyclamen" of the family Primulaceae, native to central Europe, northern Italy, and Slovenia. It is a tuberous perennial with (usually) variegated leaves, and deep pink flowers in summer.
Document 3: Roystonea palaea: Roystonea palaea is an extinct species of palm known from fossil flowers found in the early Miocene Burdigalian stage Dominican amber deposits on the island of Hispaniola. The species is known from a single staminate flower and a single pistillate flower both preserved in the same piece of amber. The amber specimen bearing the holotype and paratype is currently deposited in the collections of the Oregon State University in Corvallis, Oregon, as number "Sd–9–101", where it was studied and described by Dr George Poinar. Dr Poinar published his 2002 type description for "R. palaea" in the "Botanical Journal of the Linnean Society", Volume 139. The species' second name is taken from the Greek word "palaios" meaning "ancient". The amber specimen bearing the flowers was excavated from the La Toca mine northeast of Santiago de los Caballeros, Dominican Republic.
Document 4: Dionysia (plant): Dionysia is a genus containing 49 species of flowering plants in the family Primulaceae. They are small, cushion-forming alpines native to mountains in central Asia. They are usually evergreen perennials with felted leaves, covered with bright yellow or pink, five-petalled flowers in spring. They are often difficult to cultivate if the correct conditions are not provided.
Document 5: Roystonea dunlapiana: Roystonea dunlapiana, commonly known as yagua or cabiche is a species of palm which is native to Nicaragua, Honduras, and southern Mexico (Chiapas, Campeche, Quintana Roo, Tabasco, Veracruz). It is the only species in the genus "Roystonea" which is absent from the insular Caribbean.
Document 6: Cyananthus: Cyananthus is a genus that consists of about 30 species of annual or mostly perennial herbs from high mountains of Central and East Asia. They are little Himalayan plants not higher than 4in. The name comes from the "Greek" for blue flowers. Leaves are usually small and simple, sometimes narrowing to base, tooth-lobed at summit. In August to September, the plants bear showy of bright purplish-blue, yellow or white, funnel to bell-shaped, 5-lobed flowers 1in in diameter with stamens free from the corolla and hairy throat. The flowers are borne singly on stalks. They always lose the aerial parts during the coldest months, and as spring begins, stems and leaves quickly start to reproduce.
Document 7: Roystonea altissima: Roystonea altissima is a species of palm which is endemic to hillsides and mountain slopes near the interior of Jamaica. The name "altissima" is Latin for "highest", however they are not the tallest species in the genus "Roystonea". They are usually found just over sea-level to 760 m in elevation.
Document 8: Roystonea stellata: Roystonea stellata is a species of palm endemic to Yagruma terrace in the Maisí region of Guantánamo Province in eastern Cuba. The species is known from only a single collection made by French-born botanist Frère León in 1939, and may be extinct.
Document 9: Rhododendron: Rhododendron (from Ancient Greek ῥόδον "rhódon" "rose" and δένδρον "déndron" "tree") is a genus of 1,024 species of woody plants in the heath family (Ericaceae), either evergreen or deciduous, and found mainly in Asia, although it is also widespread throughout the highlands of the Appalachian Mountains of North America. It is the national flower of Nepal. Most species have brightly coloured flowers which bloom from late winter through to early summer.
Document 10: Roystonea maisiana: Roystonea maisiana is a species of palm which is endemic to the Maisí region of Guantánamo Province in eastern Cuba.
Document 11: Corydalis flexuosa: Corydalis flexuosa is a species of flowering plant in the genus "Corydalis", of the Papaveraceae family. It is a shade-loving perennial originating in woodland and mountainous areas of China. Growing to 30 cm , in spring it produces masses of bright blue tubular flowers with a white throat. It is summer dormant, meaning that the foliage dies down in summer.
Document 12: Roystonea: Roystonea is a genus of eleven species of monoecious palms, native to the Caribbean Islands, and the adjacent coasts of Florida and Central and northern South America. Commonly known as the royal palms, the genus was named for Roy Stone, a U.S. Army engineer. It contains some of the most recognizable and commonly cultivated palms in tropical and subtropical regions.
Document 13: Pulsatilla vernalis: Pulsatilla vernalis (spring pasqueflower, arctic violet, lady of the snows) is a species of flowering plant in the family Ranunculaceae, native to mountainous habitats in Europe. Growing to 10 cm high and wide, it is a semi-evergreen perennial with hairy, divided leaves. In early spring it bears anemone-like flowers which are up to 6 cm in diameter, white flushed with violet on the outer surface of the petals, and prominent yellow stamens.
Document 14: 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 15: Deinanthe: Deinanthe is a genus consisting of a few species of rare herbaceous-habit rhizomatous plants found in the mountain woodlands of East Asia, ranging from China to Japan. They are handsome clump-forming perennials good for shade, woodland and rock gardens. These attractive deciduous plants have relatively large "fishtail" leaves (cleft at the apex). Deinanthes grow at a slow rate to be bushy and shrub-like, 2ft tall and wide. The leaves attain 3 to 4 inches in length,being deep green, roughly textured, deep veined, cordate at their bases and with serrate margins. The shoots emerge from stout, knobby rhizomes. Leaves are easily damaged in direct sun exposure. Flowering occurs in late summer to early fall. The delicate, waxy, nodding cup-shaped flowers in rich to pale purple-blue, rose or white, are borne in loose terminal clusters. Resembling gargantuan fertile hydrangea flowers, with numerous yellowish to pale blue anthers, they are occasionally accompanied by sterile flowers, as in the lacecap hydrangeas. Roots and leaves are edible.
ground_truth: Dionysia