The Simaroubaceae are a small, mostly tropical, family in the order Sapindales. In recent decades, it has been subject to much taxonomic debate, with several small families being split off. A molecular phylogeny of the family was published in 2007, greatly clarifying relationships within the family. Together with chemical characteristics such as the occurrence of petroselinic acid in Picrasma, in contrast to other members of the family such as Ailanthus, this indicates the existence of a subgroup in the family with Picrasma, Holacantha, and Castela.
The rosids are members of a large clade of flowering plants, containing about 70,000 species, more than a quarter of all angiosperms.
The APG II system of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Group. It was a revision of the first APG system, published in 1998, and was superseded in 2009 by a further revision, the APG III system.
Crossosomataceae is a small plant family, consisting of four genera of shrubs found only in the dry parts of the American southwest and Mexico. This family has included up to ten species in the past, although as of 2021 six species are still recognised. Crossosoma are shrub-like plants which can vary from being 50 cm to 5 meters tall, with small alternating leaves that surround the stem, or leaves clustered in small spurts (fascicles). Apacheria, however, has opposite leaves. Crossosoma has usually white flowers that are generally bisexual and have 5 petals attached to a nectary disk, but in Velascoa the flowers are campanulate and have an extremely reduced nectary disk.
Aphloia is a genus of flowering plants that contains a single species, Aphloia theiformis, the sole species of the monogeneric family Aphloiaceae. It is a species of evergreen shrubs or small trees occurring in East Africa, Madagascar, the Mascarene Islands and the Seychelles.
Geissoloma is a genus of flowering plants in the monotypic family Geissolomataceae, native to the Cape Province of South Africa. Geissoloma marginatum is the only species in the family. It is sometimes called guyalone in English. The plants are xerophytic evergreen shrubs and are known to accumulate aluminum.
Alvaradoa jamaicensis is a species of plant in the Picramniaceae family. It is endemic to Jamaica.
Phedimus spurius, the Caucasian stonecrop or two-row stonecrop, is a species of flowering plant in the family Crassulaceae. It is still widely listed in the literature as Sedum spurium.
Alvaradoa amorphoides, the Mexican alvaradoa, is a species of plant in the Picramniaceae family. It is a common native plant in Mexico but is also native to southern Florida, where is it endangered.
Crataegus wattiana, the Altai hawthorn, is an Asian species of hawthorn. The original description states that it has yellow fruit with five stones (pyrenes). Crataegus wattiana var. wattiana has become naturalized in Seattle, in the U.S. state of Washington.
Picramniaceae is a small, mainly neotropical family of four genera Aenigmanu, Alvaradoa, Nothotalisia and Picramnia. The family is the only member of the order Picramniales. Members of the family were formerly placed in the family Simaroubaceae or misidentified as species in the family Sapindaceae, in the order Sapindales. The most recent standard classification of the Angiosperms distinguishes it as a separate family and order. It belongs to the malvids, one of the three groups that constitute the rosids.
Petrosedum is a genus of the succulent plant family Crassulaceae.
Eurema dina, the dina yellow, is a butterfly in the family Pieridae. The species was first described by Felipe Poey in 1832. It is found from Panama north to southern Florida.
The Chiapas Depression dry forests form one of the ecoregions that belong to the tropical and subtropical dry broadleaf forests biome, as defined by the World Wildlife Fund, in northwestern Central America.
Klaus Kubitzki was a German botanist. He was Emeritus professor in the University of Hamburg, at the Herbarium Hamburgense. He is known for his work on the systematics and biogeography of the angiosperms, particularly those of the Neotropics, and also the floristic record of the Tertiary era. His plant systematic work is referred to as the Kubitzki system. He was a member of the American Society of Plant Taxonomists.
Tanakaea radicans, the Japanese foam flower, is a species of flowering plant in the Saxifrage family, and is the sole species in the genus Tanakaea. It is native to central Honshu and Shikoku in Japan, and to southern Sichuan in south-central China. It is named after the Japanese botanist Tanaka Yoshio. It was initially described by Ludovic Savatier and Adrien René Franchet.
Crataegus pennsylvanica, known as the Pennsylvania thorn, is a species of hawthorn native to Delaware, New York, North Carolina, Ontario, Ohio, and Pennsylvania, that grows to about 8 m in height. The mature trees have few thorns.
Section Coccineae is a section within the genus Crataegus that includes the majority of North American hawthorn diversity. It includes at least 20 series as well as some species that have not yet been assigned to series.
Afrovivella is a monotypic genus of the succulent plant family Crassulaceae. The sole species is Afrovivella semiensis.
Farmeria is a genus of flowering plants in the riverweed family Podostemaceae, native to Sri Lanka and India. They attach to rocks using holdfasts, and their flowers are protected by boat-shaped spathella until they emerge.
