question: Are Sorghastrum and Calocedrus both a genus of grass
answer: no
context: Title: Fokienia
  Passage: Fokienia is a genus of conifer tree belonging to the cypress family.  In its characteristics, "Fokienia" is intermediate between the genera of "Chamaecyparis" and "Calocedrus".  Genetically "Fokienia" is much closer to "Chamaecyparis", and not all researchers recognize "Fokienia" as a separate genus.  The genus comprises only one living species, Fokienia hodginsii or Fujian cypress (; Vietnamese: "Pơmu" ), and one fossil species ("Fokienia ravenscragensis").
  Title: Echinochloa crus-galli
  Passage: Echinochloa crus-galli is a type of wild grass originating from tropical Asia that was formerly classified as a type of panicum grass.  It is commonly known as cockspur (or cockspur grass), barnyard millet, Japanese millet, water grass, common barnyard grass, or simply "barnyard grass" (which may refer to any species of "Echinochloa" or the genus as a whole however).  This plant can grow to 60" (1.5 m) in height and has long, flat leaves which are often purplish at the base.  Most stems are upright, but some will spread out over the ground.  Stems are flattened at the base.  The seed heads are a distinctive feature, often purplish, with large millet-like seeds in crowded spikelets.
  Title: Sorghastrum nutans
  Passage: Sorghastrum nutans, commonly known as either Indiangrass or yellow Indiangrass, is a North American prairie grass found in the central and eastern United States and Canada, especially in the Great Plains and tallgrass prairies.
  Title: Schizachyrium scoparium
  Passage: Schizachyrium scoparium, commonly known as little bluestem or beard grass, is a North American prairie grass native to most of the United States, except California, Nevada, and Oregon, and a small area north of the Canada–US border.  Its greatest manifestation has always been in the Midwestern prairies.  Little bluestem is a perennial bunchgrass and is prominent in tallgrass prairie, along with big bluestem ("Andropogon gerardi"), indiangrass ("Sorghastrum nutans") and switchgrass ("Panicum virgatum").  It is a warm-season species, meaning it employs the C photosynthetic pathway.
  Title: Calocedrus huashanensis
  Passage: Calocedrus huashanensis is an extinct incense-cedar species in the family Cupressaceae described from a group of isolated foliage fossils including stems and leaves.  The species is known from Oligocene sediments exposed in the Guangxi Zhuang Autonomous Region, China.  It is one of a number of extinct species placed in the living genus "Calocedrus".
  Title: Sorghastrum secundum
  Passage: Sorghastrum secundum is a species of grass known by the common name lopsided Indiangrass.  It is native to the southeastern United States.
  Title: Ixophorus
  Passage: Ixophorus is a genus of Latin American plants in the grass family.  The only recognized species is Ixophorus unisetus.  Some authors have included one or two other species in the genus, such as "I. pringlei", but these have more recently been reduced to synonymy.  Common names for "I. unisetus" include crane grass, turkey grass, Honduras grass, Mexican grass, Central America grass, hático (Colombia), zacate blanco (El Salvador, Honduras, Mexico), and zacate chompipe (Nicaragua).
  Title: Libocedrus
  Passage: Libocedrus is a genus of five species of coniferous trees in the cypress family Cupressaceae, native to New Zealand and New Caledonia.  The genus is closely related to the South American genera "Pilgerodendron" and "Austrocedrus", and the New Guinean genus "Papuacedrus", both of which are included within "Libocedrus" by some botanists.  These genera are rather similar to the Northern Hemisphere genera "Calocedrus" and "Thuja": in earlier days, what is now "Calocedrus" was sometimes included in "Libocedrus".  They are much less closely related, as recently confirmed (Gadek et al. 2000).  The generic name means "teardrop cedar", apparently referring to drops of resin.
  Title: Calocedrus
  Passage: Calocedrus (common name incense cedar, alternatively spelled incense-cedar) is a genus of coniferous trees in the cypress family Cupressaceae first described as a genus in 1873.  It is native to eastern Asia and western North America.
  Title: Sorghastrum
  Passage: Sorghastrum is a genus of grasses, native to Africa and the Americas.
citations: Sorghastrum Calocedrus