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Drosera pedicellaris

Drosera pedicellaris is a pygmy species of the sundew genus (Drosera).[1][2] It was discovered in 1997 and described in 2002 by Allen Lowrie.[2] It is endemic to Western Australia.[1][3]

Drosera pedicellaris
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Droseraceae
Genus: Drosera
Subgenus: Drosera subg. Bryastrum
Section: Drosera sect. Lamprolepis
Species:
D. pedicellaris
Binomial name
Drosera pedicellaris
Range of D. pedicellaris in the wild.

Description edit

The plant forms a ground-hugging open rosette, 1–1.8 cm (0.39–0.71 in) in diameter. Like all pygmy sundews, it is able to reproduce asexually by producing gemmae in autumn.[2]

Leaves edit

The plant has up to twenty active leaves, which are first semi-erect and then, when older, almost horizontal at the rosette's margin. The slightly hairy petioles are 4–5 mm (0.16–0.20 in) long and 0.8 mm (0.031 in) wide at the base and narrowing to 0.1 mm (0.0039 in) width before the lamina. The lamina is suborbicular and has a diameter of about one millimetre.[2]

Inflorescence edit

Flowering takes place in October–November when the plant produces one to three cymes with thin bracteoles on filiform inflorescences, rising up to 5.5 cm (2.2 in) high and bearing up to twenty flowers, or even more. These have five white petals with a green section at the base, each up to 3.5 millimetres long. The pollen is orange. The flowers have unusually long pedicels. The ellipsoid seeds are 0.4–0.5 mm (0.016–0.020 in) long.[2]

Distribution, habitat and status edit

 
Drosera pedicellaris with gemmae.

Drosera pedicellarisis only known from three small areas, one southeast of Geraldton near Three Springs, one to the east of Geraldton near Pindar, and the third in the northern edge of Badgingarra nature reserve. It appears to be restricted to white sandy soils in open heathland. It occurs at elevations of 80–300 m (260–980 ft) above sea level.[1]

Two of the three sites are nature reserves. In the unprotected areas, agricultural development is a potential risk. Fire is a potential hazard also in protected areas.[1]

Taxonomy and etymology edit

Drosera pedicellaris is part of the large group of the so-called "pygmy sundews", which form the genus' section Bryastrum. It is closely related to Drosera parvula.[2]

The epithet pedicellaris refers to the plant's distinctly long pedicels.[2]

References edit

  1. ^ a b c d e Cross, A. (2020). "Drosera pedicellaris". IUCN Red List of Threatened Species. 2020: e.T66443836A67694134. doi:10.2305/IUCN.UK.2020-1.RLTS.T66443836A67694134.en. Retrieved 26 June 2023.
  2. ^ a b c d e f g h Lowrie, A. (2002). "Drosera pedicellaris (Droseraceae), a new species from south-west Western Australia". Nuytsia. 15 (1): 59–62.
  3. ^ Western Australian Herbarium. "Drosera pedicellaris Lowrie". Florabase—the Western Australian Flora. Department of Biodiversity, Conservation and Attractions. Retrieved 3 May 2024.

drosera, pedicellaris, pygmy, species, sundew, genus, drosera, discovered, 1997, described, 2002, allen, lowrie, endemic, western, australia, conservation, status, vulnerable, iucn, scientific, classification, kingdom, plantae, clade, tracheophytes, clade, ang. Drosera pedicellaris is a pygmy species of the sundew genus Drosera 1 2 It was discovered in 1997 and described in 2002 by Allen Lowrie 2 It is endemic to Western Australia 1 3 Drosera pedicellaris Conservation status Vulnerable IUCN 3 1 1 Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Eudicots Order Caryophyllales Family Droseraceae Genus Drosera Subgenus Drosera subg Bryastrum Section Drosera sect Lamprolepis Species D pedicellaris Binomial name Drosera pedicellarisLowrie 2 Range of D pedicellaris in the wild Contents 1 Description 1 1 Leaves 1 2 Inflorescence 2 Distribution habitat and status 3 Taxonomy and etymology 4 ReferencesDescription editThe plant forms a ground hugging open rosette 1 1 8 cm 0 39 0 71 in in diameter Like all pygmy sundews it is able to reproduce asexually by producing gemmae in autumn 2 Leaves edit The plant has up to twenty active leaves which are first semi erect and then when older almost horizontal at the rosette s margin The slightly hairy petioles are 4 5 mm 0 16 0 20 in long and 0 8 mm 0 031 in wide at the base and narrowing to 0 1 mm 0 0039 in width before the lamina The lamina is suborbicular and has a diameter of about one millimetre 2 Inflorescence edit Flowering takes place in October November when the plant produces one to three cymes with thin bracteoles on filiform inflorescences rising up to 5 5 cm 2 2 in high and bearing up to twenty flowers or even more These have five white petals with a green section at the base each up to 3 5 millimetres long The pollen is orange The flowers have unusually long pedicels The ellipsoid seeds are 0 4 0 5 mm 0 016 0 020 in long 2 Distribution habitat and status edit nbsp Drosera pedicellaris with gemmae Drosera pedicellarisis only known from three small areas one southeast of Geraldton near Three Springs one to the east of Geraldton near Pindar and the third in the northern edge of Badgingarra nature reserve It appears to be restricted to white sandy soils in open heathland It occurs at elevations of 80 300 m 260 980 ft above sea level 1 Two of the three sites are nature reserves In the unprotected areas agricultural development is a potential risk Fire is a potential hazard also in protected areas 1 Taxonomy and etymology editDrosera pedicellaris is part of the large group of the so called pygmy sundews which form the genus section Bryastrum It is closely related to Drosera parvula 2 The epithet pedicellaris refers to the plant s distinctly long pedicels 2 References edit a b c d e Cross A 2020 Drosera pedicellaris IUCN Red List of Threatened Species 2020 e T66443836A67694134 doi 10 2305 IUCN UK 2020 1 RLTS T66443836A67694134 en Retrieved 26 June 2023 a b c d e f g h Lowrie A 2002 Drosera pedicellaris Droseraceae a new species from south west Western Australia Nuytsia 15 1 59 62 Western Australian Herbarium Drosera pedicellaris Lowrie Florabase the Western Australian Flora Department of Biodiversity Conservation and Attractions Retrieved 3 May 2024 nbsp Wikimedia Commons has media related to Drosera pedicellaris Retrieved from https en wikipedia org w index php title Drosera pedicellaris amp oldid 1221999516, wikipedia, wiki, book, books, library,

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