Question: Which genus of flowering plant has more species Bulbophyllum or Bismarckia?
Context: Hymenaea L. is a genus in the flowering plant family Fabaceae (legume family).  Of fourteen living species in the genus, all but one are native to the tropics of the Americas, with one additional species ("Hymenaea verrucosa") on the east coast of Africa.  Some authors place the African species in a separate monotypic genus, "Trachylobium".  In the neotropics, "Hymenaea" is distributed through the Caribbean islands, and from southern Mexico to Brazil.  Linnaeus named the genus in 1753 in Species Plantarum for Hymenaios, the Greek god of marriage ceremonies.  The name is a reference to the paired leaflets. 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'. Sarcodes is a monotypic genus of a north-west American, springtime, flowering plant in the heath family (Ericaceae), containing the single species Sarcodes sanguinea, commonly called the snow plant or snow flower.  It is a parasitic plant that derives sustenance and nutrients from mycorrhizal fungi that attach to roots of trees.  Lacking chlorophyll, it is unable to photosynthesize.  Ectomycorrhizal (EM) symbioses involve a mutualism between a plant root and a fungus; the plant provides fixed carbon to the fungus and in return, the fungus provides mineral nutrients, water and protection from pathogens to the plant.  The snow plant takes advantage of this mutualism by tapping into the network and stealing sugars from the photosynthetic partner by way of the fungus.  This form of parasitism is known as mycoheterotrophy. Ravenala is a genus of flowering plants with a single species, Ravenala madagascariensis, commonly known as traveller's tree or traveller's palm, from Madagascar.  It is not a true palm (family Arecaceae) but a member of a monocotyledonous flowering plant family, Strelitziaceae.  The genus is closely related to the southern African genus "Strelitzia" and the South American genus "Phenakospermum".  Some older classifications include these genera in the banana family (Musaceae).  Although it is usually considered to be a single species, four different forms have been distinguished. Hesperevax caulescens is a small flowering plant in the daisy family.  One common name for the plant is hogwallow starfish, as it is a somewhat flat, star-shaped plant which grows in mud.  Another common name is dwarf dwarf-cudweed, as the three members of genus "Hesperevax" are known as dwarf-cudweeds and this species is smaller than the others.  It may also be called involucrate evax, since its former Latin name was "Evax involucrata".  This annual plant is a member of the vernal pool plant community in California, where it is possibly an endemic species, although its range might extend into Baja California.  The hogwallow starfish radiates pale green spoon-shaped leaves in a basal rosette and extends a short erect stem.  The flowers are less than two millimeters wide.  This species grows along the outskirts of vernal pools in areas which have dried. Disporum viridescens is a species of flowering plant in the genus "Disporum".  Like other species in the genus, it grows from a rhizome.  The plant is 30 to 80 cm tall, with a stem that may branch.  The leaves are more-or-less ovate in shape with a very short petiole (stalk).  One or two open flowers are borne at the ends of stems; they have greenish white tepals which are 1.5 to 2 cm long.  Flowering is in late spring to early summer (May to June in the northern hemisphere).  Black berries around 1 cm in diameter appear a few months later. Aldrovanda vesiculosa, commonly known as the waterwheel plant, is the sole extant species in the flowering plant genus "Aldrovanda" of the family Droseraceae.  The plant captures small aquatic invertebrates using traps similar to those of the Venus flytrap.  The traps are arranged in whorls around a central, free-floating stem, giving rise to the common name.  This is one of the few plant species capable of rapid movement. Hirschfeldia incana (formerly "Brassica geniculata") is a species of flowering plant in the mustard family known by many common names, including shortpod mustard, buchanweed, hoary mustard and Mediterranean mustard.  It is the only species in the monotypic genus Hirschfeldia, which is closely related to "Brassica".  The species is native to the Mediterranean Basin but it can be found in many parts of the world as an introduced species and often a very abundant noxious weed.  This mustard is very similar in appearance to black mustard, but is generally shorter.  It forms a wide basal rosette of lobed leaves which lie flat on the ground, and it keeps its leaves while flowering.  Its stem and foliage have soft white hairs.  Unlike black mustard, "H. incana" is a perennial plant. Eucalyptus L'Héritier 1789 is a diverse genus of flowering trees and shrubs (including a distinct group with a multiple-stem mallee growth habit) in the myrtle family, Myrtaceae.  Members of the genus dominate the tree flora of Australia, and include "Eucalyptus regnans", the tallest known flowering plant on Earth.  There are more than 700 species of eucalyptus and most are native to Australia; a very small number are found in adjacent areas of New Guinea and Indonesia.  One species, "Eucalyptus deglupta," ranges as far north as the Philippines.  Of the 15 species found outside Australia, just nine are exclusively non-Australian.  Species of eucalyptus are cultivated widely in the tropical and temperate world, including the Americas, Europe, Africa, the Mediterranean Basin, the Middle East, China, and the Indian subcontinent.  However, the range over which many eucalypts can be planted in the temperate zone is constrained by their limited cold tolerance.  Australia is covered by 92000000 ha of eucalypt forest, comprising three quarters of the area covered by native forest. Bulbophyllum is the largest genus in the orchid family Orchidaceae.  With more than 2,000 species, it is also one of the largest genera of flowering plants, exceeded only by "Astragalus".  This genus is abbreviated in the trade journals as Bulb.  It is found throughout most of the warmer parts of the world: Africa, southern Asia, Latin America, the West Indies, and various islands in the Indian and Pacific Oceans.
Answer: Bulbophyllum