Question: Which plant was named after a Greek Physician Dioscorea or Briza?
Context: Indica (Greek: Ἰνδικά "Indika") is the name of a book by the classical Greek physician Ctesias purporting to describe Sindh.  Written in the fifth century BC, it is the first known Greek reference to that distant land.  Ctesias was the court physician to king Artaxerxes II of Persia, and the book is not based on his own experiences, but on stories brought to Persia by traders, along the Silk Road from Serica, a land north of China and India where domesticated silk originated. Diocles of Carystus ( ; Greek: Διοκλῆς ὁ Καρύστιος ; Latin: Diocles Carystius ; also known by the Latin name Diocles Medicus, i.e. "Diocles the physician"; c. 375 BC – c. 295 BC) was a well regarded Greek physician, born in Carystus, a city on Euboea, Greece.  Diocles lived not long after the time of Hippocrates, to whom Pliny says he was next in age and fame.  Not much is known of his life, other that he lived and worked in Athens, where he wrote what may be the first medical treatise in Attic (not in Ionic as was customary in Greek medical writings).  His most important work was in practical medicine, especially diet and nutrition, but he also wrote the first systematic textbook on animal anatomy.  According to a number of sources, he was the first to use the word "anatomy" to describe the study.  He belonged to the medical sect of the "Dogmatici", and wrote several medical works, of which only the titles and some fragments remain, preserved by Galen, Caelius Aurelianus, Oribasius, Athenaeus (in the "Deipnosophistae"), and other ancient writers. Hicesius (Greek: Ἱκέσιος ) was a Greek physician, who lived probably at the end of the 1st century BC, as he is quoted by Crito, and lived shortly before Strabo.  He was a follower of Erasistratus, and was at the head of a celebrated medical school established at Smyrna.  He is several times quoted by Athenaeus, who says that he was a friend of the physician Menodorus; and also by Pliny, who calls him "a physician of no small authority."  There are extant two coins struck in his honour by the people of Smyrna. Croton glandulosus has many common names such as vente conmigo, tooth-leaved croton, tropic croton and sand croton.  It is part of the Euphorbiaceae family which is also known as the Spurge Family and it contains about 321 genera and 7,950 species.  The family derives its name from Euphorbus who was a Trojan War hero in Greek mythology, and was also the Greek Physician of King Juba of Numidia.  The genus, Croton, is derived from Greek, meaning “tick,” and this is because the seeds of the plant resemble a tick.  The species, glandulosus gets its name from the gland like structures that appear at the end of the leaf stalk.  Vente conmigo and various others species are found to be common weeds in gardens and lawns. Briza is a genus of annual and perennial plants in the grass family, native to northern temperate regions of Eurasia, North Africa, and certain islands in the Atlantic. Dioscorea orangeana, is a tuberous vining flowering plant in the genus "Dioscorea", endemic the Forêt d’Orangea near Antsiranana in Madagascar, from which it derives its name.  The tuber is possibly edible, and unlike most other "Dioscorea" species, the tuber has many finger-like lobes as opposed to a single tuber.  Because the plant is new to science and the possible harvesting by local populations, the conservation status of "Dioscorea orangeana" is of great concern. Dioscorea is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world.  The vast majority of the species are tropical, with only a few species extending into temperate climates.  It is named after the ancient Greek physician and botanist Dioscorides. Euphorbus was the Greek physician of Juba II.  He wrote that a succulent plant, similar to the Euphorbia, was a powerful laxative.  In 12 BC, Juba named this plant after his physician Euphorbus in response to Augustus dedicating a statue to Antonius Musa, Augustus's own personal physician and Euphorbus' brother. Aëtius of Amida (Greek: Ἀέτιος Ἀμιδηνός ; Latin: "Aëtius Amidenus"; fl.  mid-5th century to mid-6th century) was a Byzantine Greek physician and medical writer, particularly distinguished by the extent of his erudition.  Historians are not agreed about his exact date.  He is placed by some writers as early as the 4th century; but it is plain from his own work that he did not write till the very end of the 5th or the beginning of the 6th, as he refers not only to Patriarch Cyril of Alexandria, who died 444, but also to Petrus "archiater", who could be identified with the physician of Theodoric the Great, whom he defines a contemporary.  He is himself quoted by Alexander of Tralles, who lived probably in the middle of the 6th century.  He was probably a Christian, which may account perhaps for his being confounded with Aëtius of Antioch, a famous Arian who lived in the time of the Emperor Julian.  He is amongst the earliest recorded Greek physicians of the Christian faith. Menemachus, (Greek: Μενέμαχος ), a Greek physician born at one of the cities named Aphrodisias, who belonged to the Methodic school of medicine, and lived in the 2nd century.  He wrote some works which are not now extant, and is probably the physician quoted by Caelius Aurelianus, Galen, and Oribasius.  The Menemachus, however, who is quoted by Celsus, is not the same person, and must have lived at least a century earlier.
Answer: Dioscorea