| Mitrephora glabra | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Magnoliids |
| Order: | Magnoliales |
| Family: | Annonaceae |
| Genus: | Mitrephora |
| Species: | M. glabra |
| Binomial name | |
| Mitrephora glabra | |
Mitrephora glabra is a species of plant in the family Annonaceae. It is native to Borneo. [1] Rudolph Scheffer, the Dutch botanist who first formally described the species, named it after its hairless (glabrous in Latin) leaves and mature twigs. [2] [3]
It is a tree reaching 15–20 meters in height. Its twigs are hairless when mature. Its papery to leathery, elliptical to lance-shaped leaves are 6.5-25 by 1.5-6.5 centimeters with wedge shaped bases and tips that taper to a point. Both sides of the leaves are hairless except for short hairs on the upper surface of the midrib. The leaves have 5-15 pairs of secondary veins emanating from their midribs that arch to form loops near the leaf margins. Its petioles are 2.5-9 by 1–2.5 millimeters and covered in sparse fine hairs. Its flowers are born opposite the leaves on inflorescences in groups of 3 or fewer. The flowers are on fleshy, densely hairy pedicels that are 5.5-13 by 0.5-3.5 millimeters. The pedicels have an oval, basal bract that is 1 by 1 millimeters, and another bract at their midpoint that is 1-1.5 by 1–2.5 millimeters. Its flowers have 3 triangular to oval sepals that are 1.5-3 by 2–3.5 millimeters. The sepals are covered in dense, brown hairs on their outer surface and sparse hairs on their inner surface. Its 6 petals are arranged in two rows of 3. The yellow, elliptical to oval, outer petals are 1–2.4 by 0.6-1.2 centimeters and come to a point at their tips. The outer petals are covered in light brown hairs on both surfaces, with fewer inside. The inner petals are yellow with pink to purple highlights at their tips. The inner petals are 9-13 by 2.5-5.5 millimeters with a narrow, basal claw and a rhomboidal blade. The inner petals have sparse hairs on their outer surface and dense, brown, woolly hairs on their inner surface. Its flowers have stamen that are 0.8-1.1 by 0.3-0.6 millimeters. The carpels have 10-12 ovules. Its flowers have 15-17 carpels that are 1-1.5 by 0.3-0.5 millimeters. Its fruit occur in clusters of 10–15 on pedicels that are 7-23 by 1.5-4.5 millimeters and covered in sparse hairs. The smooth, oval fruit are 1.8-3.4 by 1.1-2.1 centimeters with flat tips. The fruit are attached to the pedicel by stipes that are 1.5-4 by 1–2.4 millimeters. Each fruit has 6-8 seeds that are 6.5-23.5 by 7-20 millimeters. [3] [4] [5]
The pollen of M. glabra is shed as permanent tetrads. [6] It flowers and sets fruits throughout the year. [5]
It has been observed growing in lowland forests, often near rivers and streams, at elevations of 0 to 450 meters. [3] [5]
Bioactive compounds isolated from its tissues have been reported to be cytotoxic in tests with cultured human cancer cells and have antimicrobial activity in tests with both fungi and bacteria. [7] [8]
Mitrephora wangii is a species of plant in the family Annonaceae. It is native to China and Thailand.
Goniothalamus aurantiacus is a species of plant in the family Annonaceae. It is native to Thailand. Piya Chalermglin and Richard M.K. Saunders, the botanists who first formally described the species, named it after its orange colored inner petals.
Goniothalamus ridleyi is a species of plant in the family Annonaceae. It is native to Borneo, Peninsular Malaysia, Sumatra and Thailand. George King, who first formally described the species, named it after the English botanist Henry Nicholas Ridley who collected the specimen King examined.
Goniothalamus rongklanus is a species of plant in the family Annonaceae. It is native to Thailand. Richard Saunders and Piya Chalermglin first formally described the species and named it after Phu Hin Rong Kla National Park in Thailand.
Mitrephora alba is a species of plant in the family Annonaceae. It is native to Peninsular Malaysia. Henry Nicholas Ridley, the English botanist who first formally described the species, named it after its white flowers.
Mitrephora heyneana is a species of plant in the family Annonaceae. It is native to India and Sri Lanka. Joseph Dalton Hooker and Thomas Thomson, the British botanists who first formally described the species under the basionym Orophea heyneana, named it after Benjamin Heyne a German botanist who collected and described many plant species from India.
Mitrephora keithii is a species of plant in the family Annonaceae. It is native to Myanmar, Peninsular Malaysia and Thailand. Henry Nicholas Ridley, the English botanist who first formally described the species, named it in honor of Dr. A. Keith who collected the sample that Ridley examined.
Mitrephora macclurei is a species of plant in the family Annonaceae. It is native to China, Laos and Vietnam. Aruna Weerasooriya and Richard Saunders, the botanists who first formally described the species, named it after Floyd Alonzo McClure of Lingnan University, who collected the holotype specimen that they examined.
Mitrephora calcarea is a species of plant in the family Annonaceae. It is native to Laos and Vietnam. Aruna Weerasooriya and Richard M.K. Saunders, the botanists who provided the first valid formal description of the species, named it after the limy soil it grows in. The name follows a prior invalid account by Suzanne Jovet-Ast, which lacked a Latin description.
Mitrephora macrocarpa is a species of plant in the family Annonaceae. It is native to Sulawesi. Friedrich Anton Wilhelm Miquel, the Dutch botanist who first formally described the species using the basionym Orophea macrocarpa, named it after its large fruit.
Mitrephora pallens is a species of plant in the family Annonaceae. It is native to Vietnam. Suzanne Jovet-Ast, the French botanist who first formally described the species, named it after its pale flowers.
Mitrephora petelotii is a species of plant in the family Annonaceae. It is native to Vietnam. Aruna Weerasooriya and Richard Saunders, the botanists who first formally described the species, named it in honor of the French botanist Paul Alfred Pételot, who collected the holotype specimen that they examined.
Mitrephora polypyrena is a species of plant in the family Annonaceae. It is native to Java, the Lesser Sunda Islands, and Myanmar. Carl Ludwig Blume, the German botanist who first formally described the species using the basionym Uvaria polypyrena, named it after the many stones or seeds in its fruit.
Mitrephora maingayi is a species of plant in the family Annonaceae. It is native to Bangladesh, Borneo, Cambodia, Laos, Peninsular Malaysia, Myanmar, Sumatra, and Vietnam. Joseph Hooker and Thomas Thomson, the British botanists who first formally described the species, named it in honor of Alexander Carroll Maingay, the British botanist who collected the specimen they examined.
Mitrephora tomentosa is a species of plant in the family Annonaceae. It is native to Bangladesh, Cambodia, Laos, Myanmar, Thailand, and Vietnam. Joseph Hooker and Thomas Thomson, the British botanists who first formally described the species, named it after the dense covering of hair on its young branches, leaves and flowers.
Mitrephora winitii is a species of plant in the family Annonaceae. It is native to Myanmar and Thailand. William Grant Craib, the British botanist who first formally described the species, named it after Phya Winit Wanandor, the Thai botanist who collected the specimen that Craib examined. In the Prachuap Khiri Khan province of Thailand it is commonly referred to as Mahaphrom.
Pseuduvaria megalopus is a species of plant in the family Annonaceae. It is native to New Guinea. Karl Schumann, the German botanist who first formally described the species using the synonym Petalolophus megalopus, named it after the large wings that extend downwards from the underside of the inner petals to form a foot of dark red tissue that resembles carrion and is thought to attract fly pollinators.
Pseuduvaria multiovulata is a species of plant in the family Annonaceae. It is native to Myanmar. Cecil Fischer, the Indian botanist who first formally described the species using the basionym Mitrephora multiovulata, named it after its many ovuled ovaries.
Pseuduvaria sessilifolia is a species of plant in the family Annonaceae. It is native to New Guinea. James Sinclair, the botanist who first formally described the species, named it after its stalkless leaves which lack petioles.
Uvariastrum pierreanum is a species of plant in the Annonaceae family. It is native to Cameroon, the Central African Republic, the Democratic Republic of the Congo, Equatorial Guinea, Gabon, Ghana, Guinea, the Ivory Coast, Liberia, Nigeria, Sierra Leone and the Republic of the Congo. Adolf Engler, the botanist who first formally described the species, named it after the French botanist Jean Baptiste Louis Pierre.
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