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Ruurd Dirk Hoogland
Ruurd Dirk Hoogland (1922 Leeuwarden - 18 November 1994 Paris) was a Dutch-born explorer and naturalist, who migrated to Australia and made numerous botanical expeditions to New Guinea, Oceania and Europe. He was an expert on the family Cunoniaceae. He received his university education in Groningen and Leiden. He earned his doctorate in 1952 with a review of the genus Dillenia under Professor van Steenis and in that year he joined the Australian CSIRO in the Division of Land Research in Canberra as a botanist initially focusing on the then Australian "dependency" of Papua New Guinea. Subsequently, his field work included expeditions to remote Australian territories such as Lord Howe and Norfolk Islands, and to other Commonwealth countries including Sri Lanka and Malaysia. He transferred from CSIRO to the Research School of Biological Sciences at the Australian National University, but was forced to "retire" after contracting Myasthenia gravis. Despite this, he continued to work wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leeuwarden
Leeuwarden (; fy, Ljouwert, longname=yes /; Town Frisian: ''Liwwadden''; Leeuwarder dialect: ''Leewarden'') is a city and municipality in Friesland, Netherlands, with a population of 123,107 (2019). It is the provincial capital and seat of the Provincial Council of Friesland. It is located about 50 km west of Groningen and 110 km north east from the Dutch capital Amsterdam (as the crow flies). The region has been continuously inhabited since the 10th century. It came to be known as Leeuwarden in the early 9th century AD and was granted city privileges in 1435. It is the main economic hub of Friesland, situated in a green and water-rich environment. Leeuwarden is a former royal residence and has a historic city centre, many historically relevant buildings, and a large shopping centre with squares and restaurants. Leeuwarden was awarded the title European Capital of Culture for 2018. The Elfstedentocht (Eleven Cities Tour), an ice skating tour passing the eleven cities of Fri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Senecio
''Senecio'' is a genus of flowering plants in the daisy family (Asteraceae) that includes ragworts and groundsels. Variously circumscribed taxonomically, the genus ''Senecio'' is one of the largest genera of flowering plants. Description Morphology The flower heads are normally rayed with the heads borne in branched clusters, and usually completely yellow, but green, purple, white and blue flowers are known as well. In its current circumscription, the genus contains species that are annual or perennial herbs, shrubs, small trees, aquatics or climbers. The only species which are trees are the species formerly belonging to '' Robinsonia'' occurring on the Juan Fernández Islands. Chemistry Pyrrolizidine alkaloids are found in all ''Senecio'' species. These alkaloids serve as a natural biocides to deter or even kill animals that would eat them. Livestock generally do not find them palatable. ''Senecio'' species are used as food plants by the larvae of some Lepidoptera species t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leguminosae
The Fabaceae or Leguminosae,International Code of Nomenclature for algae, fungi, and plants. Article 18.5 states: "The following names, of long usage, are treated as validly published: ....Leguminosae (nom. alt.: Fabaceae; type: Faba Mill. Vicia L.; ... When the Papilionaceae are regarded as a family distinct from the remainder of the Leguminosae, the name Papilionaceae is conserved against Leguminosae." English pronunciations are as follows: , and . commonly known as the legume, pea, or bean family, are a large and agriculturally important of |
Gleichenia
''Gleichenia'' is a genus of ferns. Its closest relative is the genus ''Stromatopteris'', restricted to New Caledonia. Species include: * ''Gleichenia abscida'' Rodway * ''Gleichenia alpina'' R.Br. * ''Gleichenia cryptocarpa'' * ''Gleichenia dicarpa'' R.Br. – Pouched coral fern, tangle fern * ''Gleichenia mendellii'' (G.Schneid.) S.B.Andrews * ''Gleichenia microphylla'' R.Br. – Scrambling coral fern, parasol fern, umbrella fern * ''Gleichenia polypodioides'' (L.) Sm. * ''Gleichenia quadripartita'' * ''Gleichenia rupestris'' R.Br. * ''Gleichenia squamulosa ''Gleichenia squamulosa'' known locally as yerba loza, palmita and huadahue, is a fern endemic to Chile with a natural distribution ranging from Maule Region (~35° S) in the north to Aysén Region (~47° S) in the south including the Juan Ferná ...'' References External linksSmith's original description of the genus online at Project Gutenberg Fern genera {{Polypodiidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gleicheniaceae
The forked ferns are the family Gleicheniaceae, which includes six genera and about 160 known species. The formerly independent families Dicranopteridaceae and Stromatopteridaceae are generally included in the Gleicheniaceae, whereas the Dipteridaceae and Matoniaceae, although closely related, are considered separate families by most authors.Smith ''et al.'' (2006) Description These tropical ferns are the most widespread living lineage of Gleicheniales. Their rhizomes have a "vitalized" protostele or in some taxa a solenostele. The leaves are indeterminate, with pseudodichotomously forked leaves except in '' Stromatopteris'', and free veins. The sori are abaxial but not marginal and carry 5–15 exindusiate round sporangia each. These have a transverse-oblique annulus and contain 128 to 800 bilateral or globose-tetrahedral spores. The sori and sporangia mature at the same time, and the spores grow into surface-dwelling green prothalli beset with club-shaped hairs. Systematics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sleumer
Hermann Otto Sleumer (February 21, 1906 in Saarbrücken – October 1, 1993 in Oegstgeest) was a Dutch botanist of German birth. The plant genera ''Sleumerodendron'' Virot ( Proteaceae) and ''Sleumeria'' Utteridge, Nagam. & Teo (Icacinaceae The Icacinaceae, also called the white pear family, are a family of flowering plants,"Icacinaceae" At: Angiosperm Phylogeny Website At: Missouri Botanical Garden Website (see ''External links'' below). consisting of trees, shrubs, and lianas, pri ...), are named for him. References 1906 births 1993 deaths Dutch people of German descent People from Saarbrücken 20th-century Dutch botanists {{Netherlands-botanist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaccinium
''Vaccinium'' is a common and widespread genus of shrubs or dwarf shrubs in the heath family (Ericaceae). The fruits of many species are eaten by humans and some are of commercial importance, including the cranberry, blueberry, bilberry (whortleberry), lingonberry (cowberry), and huckleberry. Like many other ericaceous plants, they are generally restricted to acidic soils. Description The plant structure varies between species: some trail along the ground, some are dwarf shrubs, and some are larger shrubs perhaps tall. Some tropical species are epiphytic. Stems are usually woody. Flowers are epigynous with fused petals, and have long styles that protrude from their bell-shaped corollas. Stamens have anthers with extended tube-like structures called "awns" through which pollen falls when mature. Inflorescences can be axillary or terminal. The fruit develops from an inferior ovary, and is a four- or five-parted berry; it is usually brightly coloured, often being red or bluish wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ericaceae
The Ericaceae are a family of flowering plants, commonly known as the heath or heather family, found most commonly in acidic and infertile growing conditions. The family is large, with c.4250 known species spread across 124 genera, making it the 14th most species-rich family of flowering plants. The many well known and economically important members of the Ericaceae include the cranberry, blueberry, huckleberry, rhododendron (including azaleas), and various common heaths and heathers (''Erica'', ''Cassiope'', ''Daboecia'', and ''Calluna'' for example). Description The Ericaceae contain a morphologically diverse range of taxa, including herbs, dwarf shrubs, shrubs, and trees. Their leaves are usually evergreen, alternate or whorled, simple and without stipules. Their flowers are hermaphrodite and show considerable variability. The petals are often fused (sympetalous) with shapes ranging from narrowly tubular to funnelform or widely urn-shaped. The corollas are usually ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hibbertia
''Hibbertia'', commonly known as guinea flowers, is a genus of flowering plants in the family Dilleniaceae. They are usually shrubs with simple leaves and usually yellow flowers with five sepals and five petals. There are about 400 species, most of which occur in Australia but a few species occur in New Guinea, New Caledonia, Fiji and Madagascar. Description Plants in the genus ''Hibbertia'' are usually shrubs, rarely climbers, and often form mats. Their leaves are usually arranged alternately along the stems, usually sessile, clustered on short side-branches, and have smooth, rarely toothed or lobed edges. The flowers are usually arranged singly in leaf axils or on the ends of stems and have five sepals, two "outer" sepals slightly overlapping the three "inner" ones. There are five yellow, rarely orange, petals and the stamens are usually arranged in three to five groups, sometimes on only one side of the carpels. There are between two and five carpels, usually free from each o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dilleniaceae
Dilleniaceae is a family of flowering plants with 11 genera and about 430 known species. Such a family has been universally recognized by taxonomists. It is known to gardeners for the genus ''Hibbertia'', which contains many commercially valuable garden species. Description and distribution The family is found in the tropics and subtropics plus all of Australia. Most of the members in it are woody plants - lianas or trees such as ''Dillenia'' - but herbaceous species such as ''Hibbertia'' are also present in Dilleniaceae. The leaves of the plants in the family are wide and well-developed, but in certain species of ''Hibbertia'' they are strongly modified. The flowers are mainly showy and colorful with visible reproductive components. Buzz pollination is common in the group. Fruits of some species, such as ''Dillenia indica'' (elephant apple), are edible. Taxonomy and phylogeny left, '' Dillenia suffruticosa'' The position of the family in the phylogenetic tree and its classific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holttum
Richard Eric Holttum (20 July 189518 September 1990) was an English botanist and writer. Early life Holttum was born 20 July 1895 in Cambridgeshire, England, to English store owners of Quaker faith. He was educated at Bootham School, York. He studied at the University of Cambridge. He served with the Friends' Ambulance Unit on the Western Front during World War I, for which he was awarded the Croix de guerre. Career Having received botanical training, Holttum was given the role of assistant director at the Singapore Botanical Gardens in 1922, with the guidance of Isaac Henry Burkill. In Singapore, he performed some exhaustive studies, and was promoted to director in 1925, following the retirement of Burkill. His areas of expertise were the growth and cultivation of orchids. He continued working at the Singapore Botanical Gardens even during the Japanese occupation of the country. Holttum and Corner (assistant director at the Singapore Botanical Garden) were once detained ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyathea Sect
''Cyathea'' is a genus of tree ferns, the type genus of the fern order Cyatheales. The genus name ''Cyathea'' is derived from the Greek ''kyatheion'', meaning "little cup", and refers to the cup-shaped sori on the underside of the fronds. Description The species of ''Cyathea'' are mostly terrestrial ferns, usually with a single tall stem. Rarely, the trunk may be branched or creeping. Many species also develop a fibrous mass of roots at the base of the trunk. The genus has a pantropical distribution, with over 470 species. They grow in habitats ranging from tropical rain forests to temperate woodlands. Classification Conant ''et al.'' in 1996, concluded on molecular cpDNA and morphological evidence that a system of three clades – ''Alsophila'', ''Cyathea'' and ''Sphaeropteris'' was the most accurate reflection of evolutionary lineages within the Cyatheaceae, ''Alsophila'' being the most basal and ''Cyathea'' and ''Sphaeropteris'' derived sister groups. In the Pteridophyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
