Pseuduvaria cymosa

Last updated

Pseuduvaria cymosa
Pseuduvaria cymosa.jpg
Herbarium specimen of Pseuduvaria cymosa. [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Pseuduvaria
Species:
P. cymosa
Binomial name
Pseuduvaria cymosa
Synonyms

Pseuduvaria macrophylla var. cymosaJ.Sinclair

Pseuduvaria cymosa is a species of plant in the family Annonaceae. [2] It is native to Peninsular Malaysia. [1] James Sinclair, the Scottish botanist who first formally described the species using the synonym Pseuduvaria macrophylla var. cymosa, named it after its branched inflorescences which are called cymes. [3]

Contents

Description

It is a tree reaching 18 meters in height. Its elliptical, moderately leathery leaves are 14.5-23 by 4-10 centimeters. The leaves have blunt bases and tapering tips, with the tapering portion 6-14 millimeters long. The leaves are hairless on their upper and lower surfaces except for the midrib which can be sparsely hairy. The leaves have 14-18 pairs of secondary veins emanating from their midribs. Its densely hairy petioles are 5-9 by 1.5-3 millimeters with a broad groove on their upper side. Its Inflorescences are solitary or occur in pairs and are organized on 2-4 millimeter-long, densely hairy peduncles. Each inflorescence has up to 4 flower. Each flower is on a densely hairy pedicel that is 5-15 by 0.5-0.9 millimeters. The pedicels are organized on a rachis up to 5 millimeters long. The flowering pedicels have a medial, densely hairy bract that is 0.5-1 millimeters long. The flowers are unisexual. Its flowers have 3 triangular sepals, that are 1.5 by 1.5-2.5 millimeters. The sepals are hairless on their upper surface, and sparsely hairy on their lower surface. Its 6 petals are arranged in two rows of 3. The red to yellowish-purple, oval, outer petals are 2-2.5 by 2.5-3.5 millimeters with hairless upper surfaces and densely hairy lower surfaces. The red to yellowish-purple, triangular, inner petals have a 1.5-3 millimeter long claw at their base and a 4-6.5 by 3-3.5 millimeter blade. The inner petals have pointed tips and wedge-shaped bases. The upper and lower surfaces of the inner petals are mostly hairless. There is a solitary, smooth, elliptical gland on the upper surface of the inner petals.Male flowers have up to 65 stamens that are 0.8-1 by 0.5 millimeters. Female flowers have up to 13 carpels that are 1.6-1.8 by 0.8-0.9 millimeters. Each carpel has 4 ovules arranged in a single row. The female flowers have up to 9 sterile stamen.The fruit occur in clusters of 1-8 and are on sparsely hairy pedicles that are 15-30 by 1-3 millimeters. The mature fruit are round and 5-16 by 5-15 millimeters. The mature, smooth, densely hairy fruit have a sharp point that is 0.3-0.4 millimeters long. Each fruit has up to 2 seeds. The wrinkled, spherical seeds are 9-9.5 by 8.5 by 4.5-5.5 millimeters. [4]

Reproductive biology

The pollen of P. cymosa is shed as permanent tetrads. [5]

Habitat and distribution

It has been observed growing near streams. [4]

Related Research Articles

Pseuduvaria galeata is a species of plant in the family Annonaceae. It is a tree endemic to Peninsular Malaysia. James Sinclair, the Scottish botanist who first formally described the species, named it after the dome formed by inner petals shaped like a helmet.

Pseuduvaria taipingensis is a species of plant in the family Annonaceae. It is a tree endemic to Peninsular Malaysia. James Sinclair, the Scottish botanist who first formally described the species, named it after Taiping a city in Perak, Malaysia where the specimen he examined was collected.

<i>Pseuduvaria costata</i> Species of plant in the family Annonaceae

Pseuduvaria costata is a species of plant in the family Annonaceae. It is native to New Guinea. Rudolph Scheffer, the Dutch botanist who first formally described the species using the basionym Orophea costata, named it after its prominently ribbed fruit.

Pseuduvaria dielsiana is a species of plant in the family Annonaceae. It is native to New Guinea. Carl Lauterbach, the German botanist who first formally described the species using the synonym Goniothalamus dielsianus, named it in honor of Ludwig Diels, another German botanist who also worked on taxa from New Guinea.

<i>Pseuduvaria glabrescens</i> Species of plant in the family Annonaceae

Pseuduvaria glabrescens is a species of plant in the family Annonaceae. It is native to Australia. L.W. Jessup, the botanist who first formally described the species using the synonym Pseuduvaria mulgraveana var. glabrescens, named it after the underside of its leaves which have the quality of becoming hairless as they mature.

Pseuduvaria grandifolia is a species of plant in the family Annonaceae. It is native to New Guinea. Otto Warburg, the German-Jewish botanists who first formally described the species using the basionym Stelechocarpus grandifolius, named it after its large leaves.

Pseuduvaria hylandii is a species of plant in the family Annonaceae. It is native to Australia. L.W. Jessup, the botanists who first formally described the species, named it after Bernard Hyland an Australian botanist who collected the specimen he examined.

Pseuduvaria kingiana is a species of plant in the family Annonaceae. It is native to the Malay Peninsula. Yvonne Chuan Fang Su and Richard Saunders, the botanists who first formally described the species, named it after Sir George King, the British botanist who first collected the species.

Pseuduvaria lignocarpa is a species of plant in the family Annonaceae. It is native to New Guinea. James Sinclair, the Scottish botanist who first formally described the species, named it after the woody wall of its fruit.

Pseuduvaria luzonensis is a species of plant in the family Annonaceae. It is native to The Philippines. Elmer Drew Merrill, the American botanist who first formally described the species using the synonym Orophea luzoniensis, named it after Luzon in the Province of Battan, Philippines where the specimen he examined was collected along the Lamao River.

<i>Pseuduvaria macrocarpa</i> Species of plant in the family Annonaceae

Pseuduvaria macrocarpa is a species of plant in the family Annonaceae. It is native to The Maluku Islands and New Guinea. William Burck, the Dutch botanist who first formally described the species using the synonym Meiogyne macrocarpa, named it after its large fruit.

Pseuduvaria mindorensis is a species of plant in the family Annonaceae. It is native to the Philippines. Yvonne Su and Richard Saunders, the botanists who first formally described the species, named it after the island of Mindoro where the specimen they examined was collected in the municipality of Puerto Galera.

Pseuduvaria mulgraveana is a species of plant in the family Annonaceae. It is native to Australia. L.W. Jessup, the botanist who first formally described the species, named it after the Mulgrave River in Goldsborough, Queensland where the specimen he examined was collected.

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 guineensis is a species of plant in the family Annonaceae. It is native to New Guinea. James Sinclair, the Scottish botanist who first formally described the species, named it after New Guinea where the specimen he examined was collected near Kokoda.

Pseuduvaria obliqua is a species of plant in the family Annonaceae. It is native to Borneo. Yvonne Su and Richard Saunders, the botanists who first formally described the species, named it after its slightly uneven leaf bases.

Pseuduvaria pamattonis is a species of plant in the family Annonaceae. It is native to Borneo and the Philippines. Friedrich Miquel, the Dutch botanist who first formally described the species using the basionym Orophea pamattonis, named it after a mountain in Borneo called Gunung Pamaton.

Pseuduvaria parvipetala is a species of plant in the family Annonaceae. It is native to Borneo and Sumatra. Yvonne Su and Richard Saunders, the botanists who first formally described the species, named it after its small petals.

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.

<i>Pseuduvaria setosa</i> Species of plant in the family Annonaceae

Pseuduvaria setosa is a species of plant in the family Annonaceae. It is native to Peninsular Malaysia. George King, the botanist who first formally described the species under the basionym Orophea setosa, named it after the bristly hairs on its leaves and petioles.

References

  1. 1 2 "Pseuduvaria cymosa (J.Sinclair) Y.C.F.Su & R.M.K.Saunders". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved July 1, 2021.
  2. "Pseuduvaria cymosa (J. Sinclair) Y. C. F. Su & R. M. K. Saunders". Catalogue of Life. Species 2000. n.d. Retrieved July 1, 2021.
  3. Sinclair, James (1955). "A Revision of the Malayan Annonaceae". The Gardens' Bulletin, Singapore. 4. 14 (2): 149–516.
  4. 1 2 Su, Yvonne C.F.; Saunders, Richard M.K. (2006). Monograph of Pseuduvaria (Annonaceae). Systematic Botany Monographs. Vol. 79. American Society of Plant Taxonomists. pp. 1–204. JSTOR   25027955.
  5. Su, Yvonne C. F.; Saunders, Richard M. K. (2003). "Pollen structure, tetrad cohesion and pollen-connecting threads in Pseuduvaria (Annonaceae)". Botanical Journal of the Linnean Society. 143 (1): 69–78. doi: 10.1046/j.1095-8339.2003.00204.x . ISSN   1095-8339.