Question: What type of plant are both Chlidanthus from tropical South America and Pleurothallis derived from a Greek word meaning 'riblike branches'?

Context paragraphs:
Pleurothallis: Pleurothallis, abbreviated Pths in horticultural trade, is a genus of orchids commonly named bonnet orchids.  The genus name is derived from the Greek word 'pleurothallos', meaning 'riblike branches'.  This refers to the rib-like stems of many species.

Asatkalpa: Asatkalpa (Sanskrit: असत्कल्प्), this Sanskrit term is derived from the word, "asat", meaning 'unreal' combined with the word, "kalpa", here in the context of Advaita Vedanta philosophy meaning 'a little less than complete', and is another word for "mithya" meaning 'the almost unreal world' or 'unreal conceptuality'.  In the context of Yogacara school of Buddhism it is one of the three transformed modes of the mind which three are – "parikalpa", 'the act of imagination', "abh utaparikalpa", 'the act of imagining the unreal forms', and "asatkalpa", 'the act of imagining the non-existent'.

Protodeacon: Protodeacon derives from the Greek "proto-" meaning 'first' and "diakonos", which is a standard ancient Greek word meaning "assistant", "servant", or "waiting-man".  The word in English may refer to any of various clergy, depending upon the usage of the particular church in question.

Genasauria: Genasauria is a clade of extinct beaked, primarily herbivorous dinosaurs.  Paleontologist Paul Sereno first named Genasauria in 1986.  The name Genasauria is derived from the Latin word "gena" meaning ‘cheek’ and the Greek word "saúra" (σαύρα) meaning ‘lizard.’  Genasauria is the most inclusive clade within the order Ornithischia.  According to Sereno (1986), Genasauria represents all ornithischians except for the most primitive ornithischian, "Lesothosaurus" Sereno’s formal definition is, “"Ankylosaurus", "Triceratops", their most recent common ancestor and all descendants.”  It is hypothesized that Genasauria had diverged from "Lesothosaurus" by the Early Jurassic.  Cranial features that characterize Genasauria include a medial offset of the maxillary dentition, a sprout-shaped mandibular symphysis, moderately sized coronoid process, and an edentulous (without teeth) anterior portion of the premaxilla.  A distinguishing postcranial feature of Genasauria is a pubic peduncle of the ilium that is less robust than the ischial peduncle.

Oeconomus: Oeconomus, œconomus or oikonomos (Greek οἰκονόμος , from "oiko-" 'house' and "-nomos" 'rule, law') was an Ancient Greek word meaning 'manager' or 'housekeeper'.  In Byzantine times the term was used as a title of a manager or treasurer of an organisation.

Chlidanthus: Chlidanthus is a genus that consists of 10 species of tender bulbs from tropical South America, mostly natives to the Andes.  The botanical name comes from the Greek, meaning "delicate flower".  The plants have large spherical bulbs with gray-green, strap-shaped leaves 30cm long arising from the base.  In late spring to early summer, clusters of 3-4 large, strong citrus-scented fragrant, funnel-shaped flowers 10-13cm long held terminally on stalks 25cm high, colored in yellow, pink or red.

Iris juncea: Iris juncea (commonly called the rush iris) is a smooth-bulbed bulbous iris species.  The name is derived from 'juncea' from the Greek word meaning 'rush-like'.

Transfersome: Transfersome is a trademark registered by the German company IDEA AG, which refers to its proprietary drug delivery technology.  The name means “carrying body” and is derived from the Latin word 'transferre', meaning 'to carry across', and the Greek word 'soma', meaning 'a body'.  A "Transfersome" carrier is an artificial vesicle designed to exhibit the characteristics of a cell vesicle or a cell engaged in exocytosis, and thus suitable for controlled and, potentially, targeted drug delivery.

Equinophobia: Equinophobia or hippophobia is a psychological fear of horses. "Equinophobia" is derived from the Greek word φόβος ("phóbos"), meaning "fear" and the Latin word "equus", meaning "horse".  The term "hippophobia" is also derived from the Greek word "phóbos" with the prefix derived from the Greek word for horse, ἵππος ("híppos").

Malacoherpesviridae: Malacoherpesviridae is a family of DNA viruses in the order Herpesvirales.  Molluscs serve as natural hosts.  There are currently only two species in this family, divided among 2 genera.  Diseases associated with this family include: sporadic episodes of high mortality among larvae and juveniles.  The family name "Malacoherpesviridae" is derived from Greek word 'μαλακός (malacos) meaning 'soft' and from Greek word 'μαλάκιον (malakion) meaning 'mollusc.

Supporting paragraphs: Chlidanthus Pleurothallis
Answer: flower