Pseuduvaria parvipetala

Pseuduvaria parvipetala is a species of plant in the family Annonaceae.[2] It is native to Borneo and Sumatra.[3] Yvonne Su and Richard Saunders, the botanists who first formally described the species, named it after its small (parvi-, in Latin) petals (petala, in Latin). [4][5]

Pseuduvaria parvipetala
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Pseuduvaria
Species:
P. parvipetala
Binomial name
Pseuduvaria parvipetala

Description

It is a tree reaching 10 meters in height. The young, light to dark brown branches are sparsely hairy and also have sparse lenticels. Its egg-shaped to elliptical, papery to slightly leathery leaves are 8.5-17 by 3-6.5 centimeters. The leaves have pointed bases and tapering tips, with the tapering portion 12-22 millimeters long. The leaves are hairless on their upper and lower surfaces. The leaves have 10-14 pairs of secondary veins emanating from their midribs. Its sparsely to densely hairy petioles are 4-10 by 1-2 millimeters with a broad groove on their upper side. Its Inflorescences occur in pairs on branches, and are organized on slightly to sparsely hairy peduncles that are 1.5-3 millimeters. Each inflorescence has up to 18 flowers. Each flower is on a slightly to sparsely hairy pedicel that is 3-9 by 0.2-0.5 millimeters. The pedicels are organized on a rachis up to 5 millimeters long that have 3-18 bracts. The pedicels have a medial, densely hairy bract that is 0.5-1 millimeters long. Its flowers are unisexual. Its flowers have 3 free, triangular sepals, that are 0.7-1 by 1-1.5 millimeters. The sepals are hairless on their upper surface, sparsely to densely hairy on their lower surface, and hairy at their margins. Its 6 petals are arranged in two rows of 3. The pale yellow to pink, oval, outer petals are 1.5-2 by 1-2 millimeters with hairless upper and sparsely hairy lower surfaces. The pale yellow to pink, triangular, inner petals have a 1-2 millimeter long claw at their base and a 2-3.5 by 1.5-2.5 millimeter blade. The inner petals have flat bases and pointed tips. The inner petals are slightly hairy on their upper and lower surfaces. The inner petals have a single, smooth, flat, sausage-shaped gland on their upper surface. Male flowers have up to 26 stamens that are 0.6 by 0.5-0.6 millimeters. Female flowers have up to 5 carpels that are 1 by 0.5 millimeters. Each carpel has 2 ovules. The fruit occur in pairs and are organized on a sparsely hairy peduncle that is 3 by 1 millimeters. The fruit are attached by sparsely hairy pedicles that are 15 by 1 millimeters. The globe-shaped fruit are 7-9 by 7-9 millimeters. The fruit are wrinkly, and densely hairy.[4]

Reproductive biology

The pollen of P. parvipetala is shed as permanent tetrads.[6]

Habitat and distribution

It has been observed growing in sandstone or clay soils in lowland forests or rocky outcrops at elevations of 100-230 meters.[4]

References

  1. Verspagen, N.; Erkens, R.H.J.; Daniels, A. (2021). "Pseuduvaria parvipetala". IUCN Red List of Threatened Species. 2021: e.T179886128A179886130. doi:10.2305/IUCN.UK.2021-3.RLTS.T179886128A179886130.en. Retrieved 20 June 2022.
  2. "Pseuduvaria parvipetala Y. C. F. Su & R. M. K. Saunders". Catalogue of Life. Species 2000. n.d. Retrieved August 2, 2021.
  3. "Pseuduvaria parvipetala Y.C.F.Su & R.M.K.Saunders". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved August 2, 2021.
  4. 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. Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN 9780881926279.
  6. 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.
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