Question: Which one is a genus of perennial herbaceous, Gladiolus or Chelone?
Context: Aldama is a genus of flowering plants in the daisy family.  The genus was originally described to include one (later two) species of subtribe Helianthinae that were characterized by having pales that tightly enclosed the cypselae (achenes) (see Feddema, 1971).  Recent molecular phylogenetic studies (Schilling and Panero 2011) showed that these species are within a large group that were formerly classified in the genus "Viguiera", and "Aldama" has been expanded to include a total of 118 species.  "Aldama" is characterized by having a perennial herbaceous habit, a pappus usually of awns and scales, and a multiseriate involucre. A mandrake is the root of a plant, historically derived either from plants of the genus "Mandragora" found in the Mediterranean region, or from other species, such as "Bryonia alba", the English mandrake, which have similar properties.  The plants from which the root is obtained are also called "mandrakes".  Mediterranean mandrakes are perennial herbaceous plants with ovate leaves arranged in a rosette, a thick upright root, often branched, and bell-shaped flowers followed by yellow or orange berries.  They have been placed in different species by different authors.  They are very variable perennial herbaceous plants with long thick roots (often branched) and almost no stem.  The leaves are borne in a basal rosette, and are very variable in size and shape, with a maximum length of 45 cm .  They are usually either elliptical in shape or wider towards the end (obovate), with varying degrees of hairiness. Lactuca perennis, common names: mountain lettuce, blue lettuce or perennial lettuce, is a perennial herbaceous plant species belonging to the genus "Lactuca" of the daisy family.  It is widespread across most of central and southern Europe. Chelone obliqua ( ), with the common names Red turtlehead, Pink turtlehead, or Rose turtlehead, is a herbaceous perennial plant belonging to the family Plantaginaceae.  This uncommon wildflower is endemic to the United States, and is native to the Midwestern United States and Southeastern United States. A herbaceous border is a collection of perennial herbaceous plants (plants that live for more than two years and are soft-stemmed and non-woody) arranged closely together, usually to create a dramatic effect through colour, shape or large scale.  The term herbaceous border is mostly in use in the United Kingdom and the Commonwealth.  In North America, the term perennial border is normally used. Gladiolus (from Latin, the diminutive of "gladius", a sword,) is a genus of perennial cormous flowering plants in the iris family (Iridaceae). Gladiolus palustris, common name Marsh gladiolus or Sword Lily, is a herbaceous perennial plant belonging to the genus Gladiolus of the Iridaceae family.  The Genus nane "Gladiolus" is the Latin diminutive of gladius, a sword, while the specific Latin name "palustris", meaning "growing in marshes", refers to the alleged environment of this species. Commelina virginica, commonly known as the Virginia dayflower, is a perennial herbaceous plant in the dayflower family.  It is native to the mideastern and southeastern United States, where it is typical of wet soils.  While most members of the genus have thin, fibrous roots, the Virginia dayflower is relatively unique for its genus in having a perennial rhizome.  The plant was first described by Carl Linnaeus in his 1762 publication of the second edition of "Species Plantarum".  A phylogenetic study based on the nuclear ribosomal DNA region 5S NTS and the chloroplast region trnL-trnF, two commonly used gene regions for determining relationships, suggested that "Commelina virginica" is most closely related to two African species, namely "Commelina capitata" and "Commelina congesta".  However, the statistical support for this result was low.  morphologically speaking the supposedly related species do share some unique traits.  "C. virginica" and "C. capitata" have red hairs at the top of their leaf sheaths, an unusual character in the genus, while "C. virginica" and "C. congesta" both have clustered inflorescences on very short stalks. Herbchronology is the analysis of annual growth rings (or simply annual rings) in the secondary root xylem of perennial herbaceous plants.  While leaves and stems of perennial herbs die down at the end of the growing season the root often persists for many years or even the entire life.  Perennial herb species belonging to the dicotyledon group (also known as perennial forbs) are characterized by secondary growth, which shows as a new growth ring added each year to persistent roots.  About two thirds of all perennial dicotyledonous herb species with a persistent root that grow in the strongly seasonal zone of the northern hemisphere show at least fairly clear annual growth rings. Chelone is a genus of four species of perennial herbaceous plants native to eastern North America.  They all have similarly shaped flowers (which led to the name turtlehead due to their resemblance to the head of a turtle), which vary in color from white to red, purple or pink.  "C. cuthbertii", "C. glabra", and "C. lyonii" are diploid and "C. obliqua" is either tetraploid or hexaploid.
Answer: Chelone