Bulbophyllum Raulersoniae
 | Эта статья требует дополнительных цитат для проверки . ( март 2024 г. ) |
| Bulbophyllum Raulersoniae | |
|---|---|
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Научная классификация 
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| Королевство: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Epidendroideae |
| Genus: | Bulbophyllum |
| Section: | Bulbophyllum sect. Codonosiphon |
| Species: | B. raulersoniae
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| Binomial name | |
| Bulbophyllum raulersoniae Deloso, Paulino & Cootes
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Bulbophyllum Raulersoniae - это вид орхидеи в разделе «Кодоносиф . [ 1 ] [ 2 ] Это эндемично для островов Гуам и Рота на архипелаге Мариан . Этот вид был назван посмертно после того, как доктор Линн Раулерсон, профессор биологии в Университете Гуама , который обнаружил этот вид в 1986 году. [ 3 ] После того, как в 2022 году этот вид был впервые описан и назван в Orchideenjournal в течение 36 лет, в 2022 году назван и назван банджамином Делозо, Чарльзом Паулино и Джимом Кутсом . [ 4 ] [ 5 ]
Распределение
[ редактировать ]Известно, что этот вид встречается только во влажных лесах возвышенного известняка на островах Гуам и Рота , где он растет как эпифит в подлеске. [ 6 ] Типовый образец был обнаружен в северном Гуаме в Мачанао, недалеко от перекрестка Поттса, на расстоянии около 140 метров над уровнем моря, растущей на моринда Citrifolia . С тех пор эта среда обитания была очищена для развития, и не было никаких наблюдений за видами во время опроса 2016/2017 на соседней авиационной базе Андерсона на севере Гуама. [6][7]
In southern Guam, specimens can be seen growing on the elevated limestone caps along the Lamlam-Alifan ridge about 350 meters above sea level.[6]
On the island of Rota, Bulbophyllum raulersoniae has been observed growing at Sabana.[citation needed]
In their 2022 description of the species, Deloso et al. recommended surveys of other Mariana Islands to determine if this diminutive orchid may have a larger native range, as well as further searches to see if it may still persist in northern Guam.[6]
Description
[edit]In their original description of the species, Deloso et al. distinguish Bulbophyllum raulersoniae from other Bulbophyllum species by its "smaller pseudobulbs, an abscising lamina that leaves persisting pseudobulbs with a prominent leaf scar, a solitary flower on a short pedicel, and shorter petioles, lateral sepals, and petals."[6]
Bulbophyllum raulersoniae is smaller and more delicate than Bulbophyllum gaumense, another Guam and Rota endemic orchid.[3] They particularly differ in flower traits, although the two species have similar-appearing leaves, pseudobulbs and rhizomes. Both species produce one leaf per pseudobulb.[9] The pseudobulbs of Bulbophyllum raulersoniae persist after their associated leaf has fallen off, whereas the pseudobulb and leaf senesce together in Bulbophyllum guamense.[9]
Bulbophyllum raulersoniae blooms several times per year, but the flowers last only 2 days, opening slightly on the afternoon of the first day, fully opening by the next morning, and wilting by the afternoon of the second day.[6][3]
Ecology
[edit]Host plants identified so far include Morinda citrifolia, Areca catechu, Pandanus tectorius, Pandanus dibius, Elaeocarpus joga, Guettarda speciosa, and Freycinecia reineckii.[6]
Although many Orchidaceae species have relationships with specific pollinators, a pollinator for Bulbophyllum raulersoniae has not yet been identified.[6]
Conservation status
[edit]
Deloso et al. had recommended in 2022 that the species be listed as endangered, citing its restricted habitat on elevated limestone only on the islands of Guam and Rota.[6] As of March 2024, the species is not yet listed by the IUCN.[10]
See also
[edit]List of endemic plants in the Mariana Islands
References
[edit]- ^ "Bulbophyllum raulersoniae Deloso, Paulino & Cootes". www.worldfloraonline.org. Retrieved 2024-03-11.
- ^ "Bulbophyllum raulersoniae Deloso, Paulino & Cootes". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2024-03-11.
- ^ Jump up to: a b c "Bulbophyllum | University of Guam". www.uog.edu. Retrieved 2024-03-11.
- ^ https://www.uog.edu/_resources/files/news-and-announcements/2021-2022/2022-bulbophyllum-raulersoniae-orchideen-journal.pdf
- ^ Benjamin E Deloso; Charles Paulino; Jim Cootes (July 2022). "A new species of Bulbophyllum (Orchidaceae) from the Mariana Islands of Guam and Rota". OrchideenJournal. 29 (2). ISSN 1864-9459. Wikidata Q124807343.
- ^ Jump up to: a b c d e f g h i Deloso, Benjamin E; Paulino, Charles; Cootes, Jim (July 2022). "A new species of Bulbophyllum (Orchidaceae) from the Mariana Islands of Guam und Rota". OrchideenJournal. 29 (2). ISSN 1864-9459.
- ^ Demeulenaere, Else; Putnam, Matthew; Fiedler, G. Curt (2018). Project Report: Threatened and Endangered Plant Surveys of Northwest Field. Naval Facilities Engineering Command Marianas.
- ^ Marler, Thomas E. (2022). "Ephemeral and persistent pseudobulbs differ in their influence on nutrient relations of Guam Bulbophyllum plants". Species. 23 (72): 613 – via ResearchGate.
- ^ Jump up to: a b Marler, Thomas E. (2022). "Ephemeral and persistent pseudobulbs differ in their influence on nutrient relations of Guam Bulbophyllum plants". Species. 23 (72): 612–619 – via ResearchGate.
- ^ "IUCN search: Bulbophyllum ralersoniae". Retrieved 2024-03-11.