Biology:Microsaccus
| Microsaccus | |
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| Botanical illustration of Microsaccus griffithii as Microsaccus brevifolius | |
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| Botanical illustration of floral details of Microsaccus javensis | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Epidendroideae |
| Tribe: | Vandeae |
| Subtribe: | Aeridinae |
| Genus: | Microsaccus Blume[1] |
| Synonyms[1] | |
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This genus has no synonyms | |
Microsaccus is a genus of flowering plants from the orchid family, Orchidaceae. It is native to Southeast Asia.[1]
Description
Vegetative characteristics
These miniature epiphytes produce laterally flattened, distichously arranged leaves on thin stems.[2][3]
Generative characteristics
The usually two-flowered inflorescences are short.[3] The spurred, minuscule flowers have a simple labellum.[2] The flowers have four pollinia.[4] Within the fruits there are pale brown to whitish trichomes with an oblong-elliptic basal zone. They have perforations in the basal region.[5]
Etymology
The generic name Microsaccus is composed of the Greek words μικρός (mikrós) meaning small and saccus meaning sack, which refers to the labellum.[6]
Ecology
Microsaccus truncatus is known to grow epiphytically in montane forest at 1200 m above sea level.[6] Microsaccus griffithii occurs in forests at elevations of 500–2770 m above sea level.[7]
Physiology
Microsaccus uses CAM photosynthesis.[7]
Taxonomy
Species
The genus contains 13 accepted species:[1]
- Microsaccus affinis J.J.Sm. - Java
- Microsaccus albovirescens J.J.Sm. - Sumatra
- Microsaccus ampullaceus J.J.Sm. - Sumatra, Borneo, Malaysia
- Microsaccus borneensis J.J.Sm. - Borneo
- Microsaccus canaliculatus J.J.Sm. - Sumatra
- Microsaccus dempoensis J.J.Sm. - Sumatra
- Microsaccus griffithii (C.S.P.Parish & Rchb.f.) Seidenf. - Cambodia, Myanmar, Thailand, Vietnam, Borneo, Malaysia, Java, Sumatra, Philippines
- Microsaccus javensis Blume - Malaysia, Java
- Microsaccus mihoae P.O'Byrne & Gokusing - Borneo
- Microsaccus ramosus J.J.Sm. - Java
- Microsaccus sumatranus J.J.Sm. - Malaysia, Sumatra
- Microsaccus truncatus Carr - Malaysia
- Microsaccus wenzelii Ames - Philippines
Phylogeny
It is closely related to the genus Jejewoodia.[8] One species, namely Jejewoodia longicalcarata (Ames & C.Schweinf.) J.J.Wood used to be Microsaccus longicalcaratus Ames & C.Schweinf.[9] It has been suggested to reunite these two genera, due to their similar appearance. Another closely related genus is Adenocos, which does not have a spur, unlike the former two genera.[8]
Horticulture
Microsaccus can be cultivated under moist conditions with a lot of air movement, and intermediate temperatures. The plants should be placed in a semi-shaded position. It is rarely cultivated.[6]
See also
References
- ↑ 1.0 1.1 1.2 1.3 "Microsaccus Blume" (in en). Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/:29983-1.
- ↑ 2.0 2.1 Teoh, E.S. (2021). Microsaccus Bl. In: Orchid Species from Himalaya and Southeast Asia Vol. 2 (G - P). Springer, Cham. https://doi.org/10.1007/978-3-030-80428-2_18
- ↑ 3.0 3.1 Seidenfaden, G., Wood, J., & Holttum, R. (1992). "The Orchids of Peninsular Malaysia and Singapore." Olsen & Olsen.
- ↑ Zou, L. H., Huang, J. X., Zhang, G. Q., Liu, Z. J., & Zhuang, X. Y. (2015). "A molecular phylogeny of Aeridinae (Orchidaceae: Epidendroideae) inferred from multiple nuclear and chloroplast regions." Molecular phylogenetics and evolution, 85, 247–254.
- ↑ Gamarra, R., & Ortúñez, E. (2021). "Endocarpic trichomes in Vandeae (Orchidaceae)." Flora, 280, 151844.
- ↑ 6.0 6.1 6.2 Puccio, P. (n.d.). Microsaccus truncatus. Monaco Nature Encyclopedia. Retrieved January 9, 2023, from https://www.monaconatureencyclopedia.com/microsaccus-truncatus/
- ↑ 7.0 7.1 Microsaccus griffithii. (n.d.). Hortus Orchis. Retrieved January 9, 2023, from https://www.hortusorchis.org/en/botanical-orchids/118-m/1483-microsaccus-brevifolius.html
- ↑ 8.0 8.1 Pridgeon, A., Cribb, P., Chase, M., & Rasmussen, F. (2014). "Genera Orchidacearum Volume 6: Epidendroideae (Part 3)." pp. 118, 204, 212. OUP Oxford.
- ↑ "Jejewoodia longicalcarata (Ames & C.Schweinf.) J.J.Wood" (in en). Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/:77109445-1.
External links
Wikidata ☰ Q3906189 entry
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