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Droserapollis

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Miocene Palynomorphs of Taiwan

Pollen grains from the Miocene of Taiwan, at x900 magnification. Grains from Droserapollis gemmatus are labeled numbers 5 and 6. (Huang 1978)

Droserapollis is a type of Cenozoic sundew. It is only known from fossil pollen.

DescriptionEdit

The pollen of Droserapollis resembles that of the modern genus Drosera.[1] Because of this, it is likely that the whole Droserapollis plant closely resembled a Drosera plant.

Individual pollen grains of Droserapollis are prolate and can measure anywhere from 25 to 40 nanometers.

ClassificationEdit

Droserapollis has been assigned to the family Droseraceae, which today contains species of plant such as modern sundews and Venus flytraps. It was described by W. Krutzsch in 1970.[2]

There are four know species: D. gemmatus, D. khasiensis, D. lusaticus, and D. taiwanensis.

DistributionEdit

Droserapollis fossils have been found across Eurasia in both place and time. D. khasiensis has been found in the Paleocene-age Lakadong Sandstone of India[3][4], while D. gemmatus has been found in the Miocene-age Yutengping Sandstone of Taiwan,[5] although both of these are poorly preserved.[6] Palynomorphs (microfossils) believed to come from Droserapollis have also been found in Germany.

ReferencesEdit

  1. Song, Z.-C., W.-M. Wang & F. Huang 2004. Fossil pollen records of extant angiosperms in China. The Botanical Review 70(4): 425–458. doi:10.1663/0006-8101(2004)070[0425:FPROEA]2.0.CO;2
  2. Krutzsch, W. 1970. Zur Kenntnis fossiler disperser Tetradenpollen. Paläontologische Abhandlungen Abteilung B, Paläobotanik 3(3): 399–433.
  3. Kumar, M. 1995. Pollen tetrads from Palaeocene sediments of Meghalaya, India: comments on their morphology, botanical affinity and geological records. Palaeobotanist 43(1): 68–81.
  4. Saxena, R.K. & G.K. Trivedi 2006. A Catalogue of Tertiary Spores and Pollen from India. PDF Birbal Sahni Institute of Palaeobotany, Lucknow.
  5. Huang, T.-C. 1978. Miocene palynomorphs of Taiwan. II. Tetrad grains. PDF Botanical Bulletin of Academia Sinica 19: 77–81.
  6. Degreef, J.D. 1989. Early history of Drosera and Drosophyllum. PDF Carnivorous Plant Newsletter 18(3): 86–89.

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