Begonia montaniformis: Difference between revisions

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== Begonia montaniformis ==
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        [[File:(IMGNAME.jpg|thumb|center|B. montaniformis)]]
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      [[File:Begoniamontaniformis.png|thumb|center| B. montaniformis]]
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         | species = montaniformis
         | species = montaniformis
         | region = Thanh Hoa Province, Northern Vietnam
         | region = South East Asia
         | year_published = N/A
        | country = Vietnam
         | Date_of_Origin = N/A
         | year_published = 2015
         | plant_type = Rhizomatous
         | Date_of_Origin = Not specified
         | Chr_2n = 30, 31, 32, 33
         | plant_type = rhizomatous
        | section = Coelocentrum
         | Chr_2n = 2n = 30, 31, 32, 33
         }}
         }}
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=== Species Information ===
=== Species Information ===


==== Description ====
==== Classification and Distribution ====
- **Growth Habit:** Herbaceous, monoecious, perennial, and rhizomatous.
Begonia montaniformis is a monoecious, perennial, rhizomatous herb endemic to Northern Vietnam, specifically Thanh Hoa Province, Ba Thuoc District, Co Lung Municipality, Eo Dieu village.
- **Rhizome:** Stout, creeping, up to 30 cm long, 1-2.3 cm thick, with internodes 0.5-1.7 cm long, villous near the petiole insertion.
- **Stipules:** Pale green to pinkish, ovate-triangular, 0.7-1.4 cm long, 0.6-1.3 cm wide, strongly keeled, abaxially hairy along midrib, margin velutinous, apex aristate with an arista of about 0.2 cm.
- **Petiole:** Red to greenish-purple, terete, 7-20 cm long, 0.4-0.7 cm thick, densely white villous.
- **Leaves:** Alternate, blade asymmetric, ovate to widely ovate, 11.5-19 cm long, 8-13.5 cm wide, with a broad side measuring 6-8 cm wide. The apex is acuminate to acute, and the base is strongly oblique-cordate. The margin is repand to shallowly denticulate and ciliate. The leaves are thickly chartaceous to succulent. Adaxially, they are blackish-malachite green, purplish-olive, or dark bluish-brown, with a silvery green zone along primary and secondary veins. The leaf surface is bullate, with conical bullae measuring 0.4-0.8 (-1) cm high and 0.5-0.8 cm across, tipped by 2-4 (-6) peak-like hispidulous protrusions. Abaxially, the leaves are pale green, reddish on the hollow bullate region, and densely brownish-white tomentose on veins. Venation is palmate with 7-9 primary veins, a distinct midrib, 2-4 secondary veins on each side, and tertiary veins that are percurrent or reticulate, sometimes spiderweb-like near petiole attachment, with minor veins reticulate.
- **Inflorescences:** Axillary, arising directly from the rhizome, with dichasial cymes branching 3-8 times. Peduncles are 11-28 cm long, tomentose to subglabrous. Bracts and bracteoles are caducous, yellowish-green to reddish, with ovate bracts (about 1 cm long, 0.5 cm wide) and boat-shaped bracteoles.
- **Staminate Flower:** Pedicel 1.1-2 cm long. Tepals number 4, with outer 2 broadly ovate to obovate-orbicular (7-12 mm long, 6-10 mm wide) and inner 2 greenish, elliptic (6-8 mm long, 3-5 mm wide). Androecium is sub-actinomorphic, spherical, about 5 mm across, with 55-90 stamens. Filaments are fused at the base into a column, and anthers are yellow, slightly compressed, obovate, and about 1 mm long.
- **Pistillate Flower:** Pedicel 1.4-2 cm long. Tepals number 3, with outer 2 suborbicular or broadly ovate, abaxially reddish-green and adaxially yellowish-greenish (8-12 mm long, 9-13 mm wide), and inner 1 yellowish-greenish, elliptic (5-8 mm long, 2.5-4.5 mm wide). The ovary is reddish-green, trigonous-ellipsoid (5-9 mm long, about 3 mm thick excluding wings), sparsely sessile-glandular, and 3-winged. The wings are unequal, reddish-green, with lateral wings measuring 2-3 mm wide and an abaxial wing crescent-shaped (3-8 mm wide). Styles number 3, fused at the base, and are yellow or greenish, about 4 mm long, with a spirally twisted stigma.
- **Capsule:** Trigonous-ellipsoid, 7-11 mm long, about 3-4 mm thick (wings excluded), greenish or reddish when fresh. The wings are unequal, with lateral wings measuring 2-4 mm wide and an abaxial wing crescent-shaped (4-9 mm wide).


==== Distribution and Ecology ====
==== Habitat ====
Lithophytic herb on shady cliff. Endemic to Ba Thuoc District, Thanh Hoa Province, Northern Vietnam. Known only from the type locality. It grows in primary evergreen seasonal broad-leaved closed lowland forest on crystalline marble-like highly eroded limestone, very steep rocky slopes, and cliffs at elevations of 450-600 m.
This begonia species is a lithophytic herb that grows on shady cliffs in primary evergreen seasonal broad-leaved closed lowland forests on crystalline marble-like highly eroded limestone. It is found at elevations ranging from 450 to 600 meters.
 
==== Characteristics ====
Begonia montaniformis features stout creeping rhizomes, pale green to pinkish stipules, and red to greenish-purple petioles. Its leaves are alternate, ovate to widely ovate, with unique conical bullae on the leaf surface.
 
==== Flower Details ====
The staminate flowers have two tepals, while the pistillate flowers have three tepals. The ovary is reddish-green, trigonous-ellipsoid, with unequal wings. The species is characterized by its spirally twisted stigma.


==== Etymology ====
==== Etymology ====
The specific epithet refers to the leaf surface with dense conic bullae, reminiscent of the peak clusters in Sino-Vietnamese limestone karst landforms.
The specific epithet "montaniformis" refers to the leaf surface with dense conic bullae, resembling peak clusters in Sino-Vietnamese limestone karst landforms.


==== Notes ====
==== Similar Species ====
Begonia montaniformis shares some similarities with B. ferox and B. nahangensis but can be distinguished by several features, including stipule margin, vein color, bullae characteristics, and flower color. A detailed comparison of the new species with B. ferox and B. nahangensis is provided in Table 5.
Begonia montaniformis resembles other species like B. ferox and B. nahangensis but differs in various characteristics.


=== References ===
==== Chromosome Cytology ====
- (Add references if available)
Begonia montaniformis has been observed with 2n = 30, 31, 32, 33 chromosomes.
 
=== Care ===
Detailed care instructions for growing and maintaining Begonia montaniformis are not provided in the provided text.


=== Photos ===
=== Photos ===
[[File:(IMGNAME.jpg|thumb|center| (IMAGE INFO)]]
[[File:Begonia_montaniformis.jpg|thumb|center| Image of Begonia montaniformis]]


=== references ===
[https://www.researchgate.net/publication/277364353_Six_new_species_of_Begonia_Begoniaceae_from_limestone_areas_in_Northern_Vietnam ResearchGate]


=== External Links ===
=== External Links ===
No external links to additional resources related to Begonia montaniformis are provided.
</div>
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[[Category:rhizomatous]]
[[Category:Species]]
[[Category:Species]]
[[Category:Begonia Type]]
[[Category:Northern Vietnam]]
[[Category:Vietnam]]

Latest revision as of 12:41, 27 September 2023

B. montaniformis
Quick Species Info
Species montaniformis
Region South East Asia
Country Vietnam
Year Described 2015
Plant Type rhizomatous
Section Coelocentrum
Chr 2n 2n = 30, 31, 32, 33

Species Information

Classification and Distribution

Begonia montaniformis is a monoecious, perennial, rhizomatous herb endemic to Northern Vietnam, specifically Thanh Hoa Province, Ba Thuoc District, Co Lung Municipality, Eo Dieu village.

Habitat

This begonia species is a lithophytic herb that grows on shady cliffs in primary evergreen seasonal broad-leaved closed lowland forests on crystalline marble-like highly eroded limestone. It is found at elevations ranging from 450 to 600 meters.

Characteristics

Begonia montaniformis features stout creeping rhizomes, pale green to pinkish stipules, and red to greenish-purple petioles. Its leaves are alternate, ovate to widely ovate, with unique conical bullae on the leaf surface.

Flower Details

The staminate flowers have two tepals, while the pistillate flowers have three tepals. The ovary is reddish-green, trigonous-ellipsoid, with unequal wings. The species is characterized by its spirally twisted stigma.

Etymology

The specific epithet "montaniformis" refers to the leaf surface with dense conic bullae, resembling peak clusters in Sino-Vietnamese limestone karst landforms.

Similar Species

Begonia montaniformis resembles other species like B. ferox and B. nahangensis but differs in various characteristics.

Chromosome Cytology

Begonia montaniformis has been observed with 2n = 30, 31, 32, 33 chromosomes.

Care

Detailed care instructions for growing and maintaining Begonia montaniformis are not provided in the provided text.

Photos

File:Begonia montaniformis.jpg
Image of Begonia montaniformis

references

ResearchGate

External Links

No external links to additional resources related to Begonia montaniformis are provided.

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