Question: What type of living organisms are represented by the genus Mandragora, whose members are known as mandrakes, and Physostegia or the lionshearts native to North America?

Context paragraphs:
Physostegia virginiana: Physostegia virginiana (obedient plant, obedience, or false dragonhead) is a species of flowering plant in the mint family, Lamiaceae.  It is native to North America, where it is distributed from eastern Canada to northern Mexico.  "Physostegia" are known commonly as obedient plants because a flower pushed to one side will often stay in that position.  The name false dragonhead refers to the dragonheads of the related "Dracocephalum", a genus to which the plant once belonged.

Biological warfare: Biological warfare (BW)—also known as germ warfare—is the use of biological toxins or infectious agents such as bacteria, viruses, and fungi with the intent to kill or incapacitate humans, animals or plants as an act of war.  Biological weapons (often termed "bio-weapons", "biological threat agents", or "bio-agents") are living organisms or replicating entities (viruses, which are not universally considered "alive") that reproduce or replicate within their host victims.  Entomological (insect) warfare is also considered a type of biological weapon.  This type of warfare is distinct from nuclear warfare and chemical warfare, which together with biological warfare make up NBC, the military acronym for nuclear, biological, and chemical warfare using weapons of mass destruction (WMDs).  None of these are conventional weapons, which are deployed primarily for their explosive, kinetic, or incendiary potential.

Mandragora (genus): Mandragora is a plant genus belonging to the nightshade family (Solanaceae).  Members of the genus are known as mandrakes.  There are between three and five species in the genus.  The one or two species found around the Mediterranean constitute the mandrake of ancient writers such as Dioscorides.  Two or three further species are found eastwards into China.  All are perennial herbaceous plants, with large tap-roots and leaves in the form of a rosette.  Individual flowers are bell-shaped, whitish through to violet, and are followed by yellow or orange berries.

Walter Sutton: Walter Stanborough Sutton (April 5, 1877 – November 10, 1916) was an American geneticist and physician whose most significant contribution to present-day biology was his theory that the Mendelian laws of inheritance could be applied to chromosomes at the cellular level of living organisms.  This is now known as the Boveri-Sutton chromosome theory.

Eobacterium: Eobacterium is an extinct genus of bacteria from the Fig Tree Formation in Africa.  It is about 3 billion years old, one of the oldest known living organisms.  The discovery of "Eobacterium" and other Fig Tree organisms in the 1960s helped prove that life existed over three billion years ago.

Physostegia: Physostegia, the lionshearts, is a genus of flowering plants in the family Lamiaceae, native to North America (United States, Canada, northern Mexico).  They are erect rhizomatous herbaceous perennials inhabiting damp, sunny places.

Santiago Calatrava: Santiago Calatrava Valls (born 28 July 1951) is a Spanish architect, structural engineer, sculptor and painter, particularly known for his bridges supported by single leaning pylons, and his railway stations, stadiums, and museums, whose sculptural forms often resemble living organisms.  His best-known works include the Milwaukee Art Museum, the Turning Torso tower in Malmö, Sweden, the Margaret Hunt Hill Bridge in Dallas, Texas, and his largest project, the City of Arts and Sciences and Opera House, in his birthplace, Valencia.  His architectural firm has offices in New York City, Doha, and Zürich.

Trackway: A trackway is an ancient route of travel for people or animals.  In biology, a trackway can be a set of impressions in the soft earth, usually a set of footprints, left by an animal.  A fossil trackway is the fossilized imprint of a trackway, a type of trace fossil.  Trackways have been found all over the world.  They are especially valuable for determining some characteristics of life-forms, such as behavior.  Thus some trackways for hominids in Africa showed that they lived together and were not solitary.  The study of trackways is an aspect of ichnology, the study of marks left by living organisms.  Since identifying the makers of trackways has not ordinarily proved possible, trackway-makers are given the conventional genus name Ichniotherium, "marking creature".

Mandragora officinarum: Mandragora officinarum is the type species of the plant genus "Mandragora".  It is often known as mandrake, although this name is also used for other plants.  s of 2015 , sources differ significantly in the species they use for "Mandragora" plants native to the Mediterranean region.  In the narrowest circumscription, "M. officinarum" is limited to small areas of northern Italy and the coast of former Yugoslavia, and the main species found around the Mediterranean is called "Mandragora autumnalis", the autumn mandrake.  In a broader circumscription, all the plants native to the countries around the Mediterranean Sea are placed in "M. officinarum", which thus includes "M. autumnalis".  The names autumn mandrake and Mediterranean mandrake are then used.  Whatever the circumscription, "Mandragora officinarum" is a perennial herbaceous plant with ovate leaves arranged in a rosette, a thick upright root, often branched, and bell-shaped flowers followed by yellow or orange berries.

Stegomastodon: Stegomastodon ('roof breast tooth') is an extinct genus of gomphothere, a family of proboscideans.  It is not to be confused with the genus "Mammut" from a different proboscidean family, whose members are commonly called "mastodons", nor with the genus "Stegodon", from yet another proboscidean subfamily, whose members are commonly called "stegodonts".  The Stegomastodon was one of the smaller species through the genus.  It ranged through North and possibly South America.

Supporting paragraphs: Mandragora (genus) Physostegia
Answer: plants