Microsaccus

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Microsaccus
Microsaccus griffithii (as Microsaccus brevifolius) - Icones Bogorienses 3 Pl CCXXV (1906).jpg
Botanical illustration of Microsaccus griffithii as Microsaccus brevifolius
Die Orchideen von Java - fig. 464-465 (1912) - cropped 2.jpg
Botanical illustration of floral details of Microsaccus javensis
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Vandeae
Subtribe: Aeridinae
Genus: Microsaccus
Blume [1]
Synonyms [1]

This genus has no synonyms

Microsaccus is a genus of flowering plants from the orchid family, Orchidaceae. It is native to Southeast Asia. [1]

Contents

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]

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. 1 2 3 4 "Microsaccus Blume". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 9 January 2022.
  2. 1 2 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. 1 2 Seidenfaden, G., Wood, J., & Holttum, R. (1992). "The Orchids of Peninsular Malaysia and Singapore." Olsen & Olsen.
  4. ↑ 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.
  5. ↑ Gamarra, R., & Ortúñez, E. (2021). "Endocarpic trichomes in Vandeae (Orchidaceae)." Flora, 280, 151844.
  6. 1 2 3 Puccio, P. (n.d.). Microsaccus truncatus. Monaco Nature Encyclopedia. Retrieved January 9, 2023, from https://www.monaconatureencyclopedia.com/microsaccus-truncatus/
  7. 1 2 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. 1 2 Pridgeon, A., Cribb, P., Chase, M., & Rasmussen, F. (2014). "Genera Orchidacearum Volume 6: Epidendroideae (Part 3)." pp. 118, 204, 212. OUP Oxford.
  9. ↑ "Jejewoodia longicalcarata (Ames & C.Schweinf.) J.J.Wood". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 9 January 2022.


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