Question: Which is a type of flowering plant, Dieffenbachia or Encephalartos?

Context paragraphs:
Malacothamnus palmeri: Malacothamnus palmeri is a species of flowering plant in the mallow family known by the common names Palmer's bushmallow and Santa Lucia bushmallow.  This flower is pink in color.  It grows in openings in heavy chaparral and mixed evergreen forest.  It requires adobe/shale to red clay type of soil to grow.  The associated species are Quercus agrifolia, Adenostoma fasciculatum, Garrya elliptica, Rhamnus californica,Diplacus aurantiacus, Arctostaphylos luciana and Arbutus menziesii.  A fast growing plant in most situations.  The plant is fairly narrow (it will sucker to some degree) and will fit into a narrow flower bed.

Malacothrix incana: Malacothrix incana is an uncommon species of flowering plant in the aster family known by the common name dunedelion.  It is endemic to California, where it grows only in sand dunes on the beaches of the Channel Islands and isolated spots along the mainland coastline in San Luis Obispo and Santa Barbara Counties.  The type specimen was collected in San Diego, but the plant no longer occurs there.  This is a perennial herb forming a leafy mound up to about 70 centimeters in maximum height.  It may be hairless to densely hairy.  The leaves are smooth-edged or have dull lobes.  Leaves at the base of the stem are similar to those distal.  The inflorescence is an array of flower heads lined with hairless phyllaries.  The ray florets are one or two centimeters long and yellow in color.

Encephalartos: Encephalartos is a genus of cycad native to Africa.  Several species of "Encephalartos" are commonly referred to as bread trees, bread palms or kaffir bread, since a bread-like starchy food can be prepared from the centre of the stem.  The genus name is derived from the Greek words "en" (within), "kephali" (head), and "artos" (bread), referring to the use of the pith to make food.  They are, in evolutionary terms, some of the most primitive living gymnosperms.

Veratrum fimbriatum: Veratrum fimbriatum is an uncommon species of false hellebore, a type of plant closely related to the lily.  Its common names are fringed false hellebore and fringed corn lily.  It is endemic to California where it is a rare resident of the northern coastal scrub plant communities of Mendocino and Sonoma Counties.  This flowering plant is a stout, hollow-stemmed perennial growing from a thick rhizome.  The erect flowering plant bears several large, flat, green leaves near the base of the green stem.  The large panicle inflorescence is packed with many distinctive, lacy-fringed flowers each up to a centimeter wide.  The flower bud is club-shaped before it opens into a bloom of six frilly tepals, each of which bears two bright green or gold glands.  The ovary and sepals extend straight outward as one thick stalk.  The fruit is an oval-shaped capsule just under a centimeter long containing the seeds.

Boophone disticha: Boophone disticha is a bulbous tropical and subtropical flowering plant, endemic to Africa.  Its common names are gifbol, tumbleweed, veld fan, and windball.  The type specimen was collected in 1781 from South Africa by Swedish botanist Carl Peter Thunberg and described by Linnaeus as "Amaryllis disticha".  Since that time it has been placed in the genera "Brunsvigia" and "Haemanthus", finally coming to rest as "Boophone".  The genus itself was written in three ways ("Boophone", "Boophane" and "Buphane") by the author William Herbert, straining the procedures of the rules of nomenclature.  The etymology of the genus is from the Greek 'bous' = ox, and 'phontes'= killer of, a clear warning that eating the plant can be fatal to livestock.

Dubautia kenwoodii: Dubautia kenwoodii (Kalalau rim dubautia) is an "extremely rare" species of flowering plant in the aster family.  It is endemic to Hawaii where it is known only from the island of Kauai.  Only one plant has ever been seen: the type specimen.  A part of this plant was collected in 1991 and the individual was described as a new species in 1998.  It was federally listed as an endangered species of the United States in 2010.  Like other "Dubautia" this plant is known as na`ena`e.

Dieffenbachia: Dieffenbachia is a genus of tropical flowering plants in the family Araceae.  It is native to the New World Tropics from Mexico and the West Indies south to Argentina.  Some species are widely cultivated as ornamental plants, especially as houseplants, and have become naturalized on a few tropical islands.

Nolina interrata: Nolina interrata is a rare species of flowering plant known by the common names Dehesa nolina and Dehesa beargrass.  It is known from about ten occurrences in central San Diego County, California, and fewer than 100 individual plants on land across the border in Baja California.  The plant was first described in 1946 when found at the type locality near El Cajon, California, and all the individuals known in California are located within a six-square-mile area there.  Although rare, numbering about 9,000 plants total in existence, the species is relatively well protected in its habitat and a proposal for federal protected status was withdrawn.

Cryptolepis sanguinolenta: Cryptolepis sanguinolenta is a species of flowering plant in the family Apocynaceae.  An extract from the root is traditionally used in West Africa to treat malaria.  The alkaloid cryptolepine is a potent antimalarial.  The plant also has potential for treating Type II diabetes and is considered a powerful systemic antibiotic.  It contains the antibacterial alkaloids cryptolepine, quindoline, and neocryptolepine.  The roots are also used as a yellow dye.

Stillingia spinulosa: Stillingia spinulosa is a species of flowering plant in the euphorb family known by the common name annual toothleaf.  It is native to the southwestern United States where it occurs in the creosote scrub of the deserts.  It is an annual or perennial herb producing a clump of thick, leafy stems approaching a meter in maximum height.  The alternately arranged leaves have shiny pointed oval blades 2 to 4 centimeters long and up to 1.2 centimeters wide which are lined with sharp teeth.  The inflorescence is a stout spike of flowers 1 to 2 centimeters long.  The plant is monoecious, and each spike has several male flowers at the tip and 1 or 2 fruit-bearing female flowers below these.  Neither type of flower has petals.  The ovary of the female flower develops into a three-lobed greenish capsule about half a centimeter wide.  There is a tiny rough-surfaced seed in each of the three chambers of the fruit.

Supporting paragraphs: Dieffenbachia Encephalartos
Answer: Dieffenbachia