Begonia jubar

**Quick Species Info**
Species	jubar
Region	South East Asia
Country	Vietnam
Year published	2021
Date of Origin	2019
Plant Type	rhizomatous
Section	Petermannia
Chr 2n	Not specified

Begonia jubar V.T.Pham & C.W.Lin, sp. nov. §. Petermannia

Description

Monoecious rhizomatous herb with yellowish-green rhizome, dense hirsute internodes, and rose-pink persistent stipules. Leaves are alternate, ovate, and exhibit colorful patterns.

Distribution

Begonia jubar is endemic to Lak district in Dak Lak Province, southern Vietnam.

Habitat

It thrives in semi-deciduous lowland forests on silicate rocks, typically growing on silicate cliff faces in semi-shade. The elevation of its habitat is approximately 450 meters above sea level.

Characteristics

Begonia jubar is a monoecious rhizomatous herb. Its rhizome is stout, creeping, and yellowish-green, with densely hirsute internodes. The stipules are rose-pink, widely triangular, and recurved. Leaves are alternate, with carmine to pale vermilion petioles. The leaf blade is asymmetric, oblique, ovate to widely ovate, and exhibits distinctive patterns. Staminate flowers have pinkish-white tepals, while pistillate flowers have pinkish-white tepals and 3-winged ovaries. The plant's bright veins contrast with the dark lamina, giving it a striking appearance.

Flowers

- Staminate flowers have pinkish-white tepals. - Pistillate flowers have pinkish-white tepals and 3-winged ovaries.

Distribution and Ecology

Endemic to Lak district in Dak Lak Province, Vietnam. Grows on silicate cliff faces in semi-shade, under the canopy of various tree and herbaceous species.

Etymology

From Latin "jubar" meaning brightness, referring to its outstanding bright veins.

Conservation Status

Considered Vulnerable due to its rarity and potential horticultural trade threat.

Notes

Begonia jubar is most closely allied to Begonia rigidifolia but has distinct characteristics, including glabrous stipules, leaf base, and larger flowers.

References

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