The University of Oxford Botanic Garden is the oldest botanic garden in Great Britain and one of the oldest scientific gardens in the world.
 The garden was founded in 1621 as a physic garden growing plants for medicinal research.
 Today it contains over 8,000 different plant species on 1.8 ha .
 It is one of the most diverse yet compact collections of plants in the world and includes representatives from over 90% of the higher plant families.
Baikiaea is a genus of flowering plants in the legume family, Fabaceae.
The abundances of plant species are often measured by plant cover, i.e. the relative area covered by different plant species in a small plot.
 Plant cover is not biased by the size and distributions of individuals, and is an important and often measured characteristic of the composition of plant communities.
 Plant cover data may be used to classify the studied plant community into a vegetation type, to test different ecological hypothesis on plant abundance, and in gradient studies, where the effects of different environmental gradients on the abundance of specific plant species are investigated.
Nematinae is a subfamily of sawflies belonging to the family Tenthredinidae.
 It contains over 1000 described species.
 Members of this subfamily feed on a wide range of plants (over 20 different plant families have been recorded as hosts) and employ a wide range of feeding habits, both internally and externally, on their host plants.
Dendrology (Ancient Greek: δένδρον , "dendron", "tree"; and Ancient Greek: -λογία , "-logia", "science of" or "study of") or xylology (Ancient Greek: ξύλον , "ksulon", "wood") is the science and study of wooded plants (trees, shrubs, and lianas), specifically, their taxonomic classifications.
 There is no sharp boundary between plant taxonomy and dendrology; however, woody plants not only belong to many different plant families, but these families may be made up of both woody and non-woody members.
 Some families include only a few woody species.
 Dendrology, as a discipline of industrial forestry, tends to focus on identification of economically useful woody plants and their taxonomic interrelationships.
 As an academic course of study, Dendrology will include all woody plants, native and non-native, that occur in a region.
 A related discipline is the study of Sylvics, which focuses on the autecology of genera and species.
The World Checklist of Selected Plant Families (usually abbreviated to WCSP) is an "international collaborative programme that provides the latest peer reviewed and published opinions on the accepted scientific names and synonyms of selected plant families."
 Maintained by the Royal Botanic Gardens, Kew, it is available online, allowing searches for the names of families, genera and species, as well as the ability to create checklists.
Romulea bulbocodium is one of the best-known species from the genus "Romulea".
 The plant, a member of the Iridaceae family, is native to the Mediterranean region (southern Europe, northern Africa, the Middle East) and Sudan.
 It has many varieties and is occasionally used as ornamental plant.
Romulea is a genus of flowering plants in the iris family, first described as a genus in 1772.
 It is distributed in Europe, the Mediterranean, the Arabian Peninsula, and Africa.
A cushion plant is a compact, low growing, mat forming plant that is found in alpine, subalpine, arctic, or subarctic environments around the world.
 The term "cushion" is usually applied to woody plants that grow as spreading mats, are limited in height above the ground (a few inches at most), have relatively large and deep tap roots, and have life histories adapted to slow growth in a nutrient poor environment with delayed reproductivity and reproductive cycle adaptations.
 The plant form is an example of parallel or convergent evolution with species from many different plant families on different continents converging on the same evolutionary adaptations to endure the harsh environmental conditions.
Lophodermium is a genus of fungi within the family Rhytismataceae.
 The genus contains 145 species and has a global distribution.
 Species of this genus are usually observed producing zone lines, conidiomata and ascomata on dead fallen leaves, but at least some are known to colonize living leaves.
 In many cases they then live inside the colonized leaf as a symptomless endobiont, where they are regarded as detritivores utilising dead plant matter.
 In a few cases they may kill all or part of the leaf prematurely, and there is a substantial literature dealing with those species as plant pathogens.
 The genus infects many different plant families but with a notable concentration in the family Pinaceae; many "Lophodermium" species are restricted to a single host genus (or even species), but some, particularly those infecting grasses, may infect several genera.
 Some are economically important plant pathogens, such as those that cause needlecast disease in European Black Pine, Scots Pine and Red Pine in forestry and christmas tree plantations.
 In these species, notably "L. pinastri" and "L. seditiosum", the fungal spores disperse and infect the pine needles in late summer, which turn brown by the following spring and then fall off.

Question: Are Romulea and Baikiaea in different plant families?
Answer: yes