Begonia tanauanensis
Begonia tanauanensis. (Photo: Danilo N. Tandang)

In March 2024, the description of a new species of flowering plant from the Philippines was published in Phytotaxa.

π˜½π™šπ™œπ™€π™£π™žπ™– 𝙩𝙖𝙣𝙖π™ͺπ™–π™£π™šπ™£π™¨π™žπ™¨

Distribution/habitat: Tanauan City, Batangas, southern Luzon, Philippines

Endemic: Yes

Distinctive traits: π˜‰. 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴 has a few similarities with a π˜‰π˜¦π˜¨π˜°π˜―π˜ͺ𝘒 species from eastern Luzon, π˜‰. 𝘀𝘩π˜ͺ𝘯𝘨π˜ͺ𝘱𝘦𝘯𝘨π˜ͺπ˜ͺ. Both plants have light pink flowers, fleshy green leaf blades (laminae), and boat-shaped bracts (leaflike structures), but π˜‰. 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴 differs from π˜‰. 𝘀𝘩π˜ͺ𝘯𝘨π˜ͺ𝘱𝘦𝘯𝘨π˜ͺπ˜ͺ in that it has no prominent white midrib and veins on the top side of its leaves. The leaf edges of π˜‰. 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴 are smooth, unlike π˜‰. 𝘀𝘩π˜ͺ𝘯𝘨π˜ͺ𝘱𝘦𝘯𝘨π˜ͺπ˜ͺ’s, which has tiny hairs. Moreover, the stipules (paired appendages near the leaf base) of π˜‰. 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴 are only partly keeled (folded along the middle, like a boat), while π˜‰. 𝘀𝘩π˜ͺ𝘯𝘨π˜ͺ𝘱𝘦𝘯𝘨π˜ͺπ˜ͺ’s are prominently keeled. Lastly, π˜‰. 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴 has no thick and wooly (tomentose) hair covering under its leaves and stalks, which the leaves of π˜‰. 𝘀𝘩π˜ͺ𝘯𝘨π˜ͺ𝘱𝘦𝘯𝘨π˜ͺπ˜ͺ possess.

π˜‰. 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴 has only been found growing on moist boulders near a waterfall, within a lanzones plantation. It has been observed to bear flowers and immature fruits from February to March and dried capsules in May.

Conservation status: Critically Endangered

Described by: Mark Angelo Bucay, Danilo Tandang, and Kuo-Fang Chung

Etymology: Its species name, 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴, references its place of origin.

Significance

Aside from its β€œrestricted and severely fragmented distribution,” the existence of π˜‰. 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴 is also threatened both by human activities (e.g., people bathing or doing their laundry near the area, nearby land conversions) and Taal Volcano’s activity. The description of π˜‰. 𝘡𝘒𝘯𝘒𝘢𝘒𝘯𝘦𝘯𝘴π˜ͺ𝘴 brings hope not just for increased environmental awareness, but perhaps more importantly, for a stronger commitment from all stakeholders β€” including the government and the general public β€” to protect and support research efforts in vulnerable areas where these novel species reside.β€”MF


Reference:

Bucay, Mark Angelo & Chung, Kuo-Fang & Tandang, D.N.. (2024). A new Begonia species (sect. Baryandra, Begoniaceae) from Batangas Province, Luzon Island, Philippines. Phytotaxa. 641. 277–285. 10.11646/PHYTOTAXA.641.4.4.

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