Begonia afromigrata and Begonia fimbristipula subsp. siamensis: Difference between pages

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== Begonia afromigrata ==
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        [[File:(IMGNAME.jpg|thumb|center| B. afromigrata)]]
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         | species = afromigrata
         | species = fimbristipula subsp. siamensis
         | region = South East Asia
         | region = South East Asia
         | country = Thailand, Laos
         | country = Thailand
         | year_published = 2011
         | year_published = 2023
         | Date_of_Origin = Not specified
         | Date_of_Origin = 2022
         | plant_type = rhizomatous
         | plant_type = Tuberous
         | section = Not specified
         | section =  
         | Chr_2n = Not specified
         | Chr_2n = Not specified
         }}
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=== Species Information ===
=== Species Information ===


==== Classification and Distribution ====
==== Classification and Distribution ====
Begonia afromigrata is an epiphytic monoecious plant found in Laos (Vang Vieng hills and Muang Awn) and South Western Province of Thailand (Kanchanaburi region).
Begonia fimbristipula subsp. siamensis is a perennial monoecious acaulescent herb that is primarily found in the northern and north-eastern regions of Thailand. It belongs to the section "Begonia fimbristipula."
 
==== Habitat ====
This subspecies thrives in evergreen forests at high elevations, typically between 1300 to 1900 meters above sea level. It can be found on both limestone and sandstone outcrops.


==== Habitat and Ecology ====
==== Distribution ====
This species primarily grows epiphytically, typically between 5 and 15 meters above ground level. It is commonly found on dead trees or fallen branches in evergreen forests, although it has been noted in deciduous forests as well. Its preferred habitat includes limestone formations at altitudes ranging from 600 to 1900 meters. Begonia afromigrata is often seen on tree trunks rather than smaller branches. In cultivation, it produces male inflorescences first, followed by female inflorescences.
Begonia fimbristipula subsp. siamensis is known to occur in several provinces in northern and north-eastern Thailand.


==== Characteristics ====
==== Characteristics ====
- Stems: Usually pendulous, up to 90 cm long, with an indumentum of lepidote-stellate, irregularly shaped, brownish-tan trichomes when young. The indumentum disappears with age.
This subspecies grows as a compact herb, reaching heights of 10–25 cm. It possesses a tuber that can be either globose or sub-elongate, measuring 0.7–2.0 cm in length. The leaves are broadly ovate, with variations in symmetry and coloration on both surfaces. The stipules are ovate-triangular and ciliate. Inflorescences are bisexual and cymose, branching 1–3 times.
- Stipules: Moderately persisting, narrowly triangular to ovate, 30–35×5–12 mm, with a distinct median nerve and stellate indumentum.
- Leaves: Fleshy, dull medium green above, pale green beneath. Petioles are terete, stellate pubescent, greenish or brownish red, 2–7(–8) cm long. Lamina is membranaceous when dry, variously asymmetrical, narrowly oblong to ovate, 11–24×3–12 cm, with a cordate or truncate base. The margin is variable, from sinuate and remotely bluntly dentate to almost entire and reddish.
- Inflorescences: Axillary, strictly unisexual, and often simultaneous on the same branch. Male inflorescence is a short dichasial cyme, up to 7-(rarely up to 15-)flowered. Female inflorescence is a (1-, 2-,) 3-flowered dichasial cyme, with the central flower on top of the peduncle and both lateral flowers often perpendicular to the top flower.


==== Flower Details ====
==== Flower Details ====
**Male Flowers:**
**Staminate Flowers:** Pedicels are maroon and erect, with glabrous tepals that are white-pinkish to pink. Stamens are numerous (10–25) and yellow.
- Pedicel often curved in bud, up to 10 mm long, pale wine red.
- Perianth segments: 4, with two larger outer tepals opposite, obovate, up to 15×12 mm, white or pink.
- Pair of inner tepals: Alternate, much smaller, narrowly obovate, 8–14×2–3 mm.
- Androecium: Stamens 11–14, filaments fused at the base into a ca. 1 mm long in vivo red column.


**Female Flowers:**
**Pistillate Flowers:** Pedicels are maroon, and tepals are white-pinkish to pink. Styles are 3, yellow, and bilobed.
- Ovary of the top flower of the cyme in the lower part sterile and over a length of 3–5 mm contracted into a pedicel-like stalk.
- Perianth segments: 3–4, similar in shape, color, and indumentum to male flowers.


==== Etymology ====
==== Etymology ====
The species name "afromigrata" suggests a resemblance to Begonia eminii Warb. from Africa, but it is distinct in several aspects.
The subspecific epithet "siamensis" refers to the nativity of this taxon to "Siam," the exonym used for Thailand before 1949.


==== Comparison to Similar Species ====
==== Comparison to Similar Species ====
Begonia afromigrata resembles Begonia eminii Warb. from Africa but is distinct in several ways, including leaf characteristics and ecological preferences.
Begonia fimbristipula subsp. siamensis exhibits phenotypic variation among individuals of the same population, especially in leaf size and abaxial leaf surface color. This variability resembles reports from occurrences of B. fimbristipula subsp. fimbristipula in southern China. Phenotypic plasticity may result from adaptation to the harsh environments these plants inhabit.


==== References ====
==== References ====
[https://www.researchgate.net/figure/The-distribution-of-Begonia-afromigrata-in-Laos-and-Thailand_fig2_233671035 Research Gate]
[https://www.researchgate.net/publication/367038060_Begonia_fimbristipula_subsp_siamensis_sect_Diploclinium_Begoniaceae_a_new_taxon_of_the_megadiverse_genus_endemic_to_Thailand ResearchGate]


=== Care ===
=== Care ===
No specific care instructions or tips for growing and maintaining Begonia afromigrata are provided.
Care instructions or tips for growing and maintaining Begonia fimbristipula subsp. siamensis are not specified.


=== Photos ===
=== Photos ===
[[File:(name).jpg|thumb|center| (IMAGE INFO)]]
[[File:(name).jpg|thumb|center| (IMAGE INFO)]]
Include additional photos of Begonia afromigrata.
Include additional photos of Begonia fimbristipula subsp. siamensis.


=== External Links ===
=== External Links ===
No relevant external links were provided.
No relevant external links were provided.
 
  </div>
</div>
[[Category:Species]]
[[Category:Species]]
[[Category:rhizomatous]]
[[Category:tuberous]]
[[Category:Thailand]]
[[Category:Thailand]]
[[Category:Laos]]

Latest revision as of 09:50, 27 September 2023

B. fimbristipula subsp. siamensis)
Quick Species Info
Species fimbristipula subsp. siamensis
Region South East Asia
Country Thailand
Year Described 2023
Plant Type Tuberous
Section
Chr 2n Not specified

Species Information

Classification and Distribution

Begonia fimbristipula subsp. siamensis is a perennial monoecious acaulescent herb that is primarily found in the northern and north-eastern regions of Thailand. It belongs to the section "Begonia fimbristipula."

Habitat

This subspecies thrives in evergreen forests at high elevations, typically between 1300 to 1900 meters above sea level. It can be found on both limestone and sandstone outcrops.

Distribution

Begonia fimbristipula subsp. siamensis is known to occur in several provinces in northern and north-eastern Thailand.

Characteristics

This subspecies grows as a compact herb, reaching heights of 10–25 cm. It possesses a tuber that can be either globose or sub-elongate, measuring 0.7–2.0 cm in length. The leaves are broadly ovate, with variations in symmetry and coloration on both surfaces. The stipules are ovate-triangular and ciliate. Inflorescences are bisexual and cymose, branching 1–3 times.

Flower Details

    • Staminate Flowers:** Pedicels are maroon and erect, with glabrous tepals that are white-pinkish to pink. Stamens are numerous (10–25) and yellow.
    • Pistillate Flowers:** Pedicels are maroon, and tepals are white-pinkish to pink. Styles are 3, yellow, and bilobed.

Etymology

The subspecific epithet "siamensis" refers to the nativity of this taxon to "Siam," the exonym used for Thailand before 1949.

Comparison to Similar Species

Begonia fimbristipula subsp. siamensis exhibits phenotypic variation among individuals of the same population, especially in leaf size and abaxial leaf surface color. This variability resembles reports from occurrences of B. fimbristipula subsp. fimbristipula in southern China. Phenotypic plasticity may result from adaptation to the harsh environments these plants inhabit.

References

ResearchGate

Care

Care instructions or tips for growing and maintaining Begonia fimbristipula subsp. siamensis are not specified.

Photos

File:(name).jpg
(IMAGE INFO)

Include additional photos of Begonia fimbristipula subsp. siamensis.

External Links

No relevant external links were provided.