Pseuduvaria parvipetala
| Pseuduvaria parvipetala | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Magnoliids |
| Order: | Magnoliales |
| Family: | Annonaceae |
| Genus: | Pseuduvaria |
| Species: | P. parvipetala
|
| Binomial name | |
| 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]
Description
[edit]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
[edit]The pollen of P. parvipetala is shed as permanent tetrads.[6]
Habitat and distribution
[edit]It has been observed growing in sandstone or clay soils in lowland forests or rocky outcrops at elevations of 100-230 meters.[4]
References
[edit]- ^ 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.
- ^ "Pseuduvaria parvipetala Y. C. F. Su & R. M. K. Saunders". Catalogue of Life. Species 2000. n.d. Retrieved August 2, 2021.
- ^ "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.
- ^ a b c 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.
- ^ Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN 9780881926279.
- ^ 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.