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Three new species of Vaccinium endemic to the island of Mindanao, Philippines are here described and illustrated. Vaccinium fallax most closely resembles V. myrtoides, but differs by having smaller leaves, caducous bracts, shorter pedicels, a broadly obconical hypanthium, broadly triangular calyx lobes, and a deep pink and broadly urceolate corolla. It grows on exposed areas and among sulfur vents at and near the summit of Mt. Apo. Vaccinium gamay most closely resembles V. gitingense, but differs in having shorter inflorescences, early caducous inflorescence bracts, shorter pedicels, presence of clavate glands on the hypanthium, and an absence of anther spurs. It grows on exposed areas in the ultramafic forest of Mt. Hamiguitan. It is one of only two Philippine Vaccinium species possessing distinctly callose-thickened calyx lobes, the other being V. gitingense. Vaccinium vomicum most closely resembles V. carmesinum, but differs by having smaller leaves, presence of glands on the extreme end of the leaf blade base, presence of clavate glands on the hypanthium, shorter stamens, and presence of stalked glands on the dentate apex of the tubules. It grows in the mossy rainforest of Mt. Kitanglad, and it is the only Philippine species of Vaccinium with glands on the extreme end of its leaf blade base. Following IUCN guidelines, we propose a conservation status of Critically Endangered for V. fallax, Endangered for V. gamay, and Data Deficient for V. vomicum. With these discoveries, the number of Vaccinium species in Mindanao Islands increases to 22 and in the Philippines to 44. Furthermore, the Mindanao Islands can now be considered the center of Vaccinium diversity in the Philippines.
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Two new endemic species of blueberry (Vaccinium L., Ericaceae) from Luzon and Mindanao islands, Philippines
Two new species of Vaccinium from the Philippines are described and illustrated from historical herbarium collections. Vaccinium burburan from Luzon Island, Northern Philippines is morphologically similar to V. tenuipes, but is distinguished by having shorter petioles, pedicels and corolla, adaxially pubescent leaf blades with cordate base, apically pubescent corollas, and pubescent filaments throughout. It is only one of two species of Vaccinium in the Philippines known to have a cordate leaf blade base. Vaccinium burburan is considered critically endangered. Vaccinium jubatum from Mindanao Island, Southern Philippines, is morphologically similar to V. sylvaticum, but is distinguished by having a dentate leaf blade margin, shorter inflorescences and pedicels, a glabrous calyx, and shorter filaments. The dentate leaf blade margin of V. jubatum uniquely distinguishes it from other Philippine Vaccinium species. The conservation status of V. jubatum is considered data deficient. These discoveries further increase the current number of known Vaccinium species in the Philippines to 40.
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- PAR ID:
- 10427928
- Date Published:
- Journal Name:
- Phytotaxa
- Volume:
- 564
- Issue:
- 2
- ISSN:
- 1179-3155
- Page Range / eLocation ID:
- 139 to 148
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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Vaccinium carmesinum is described as a new species of Ericaceae from Mt. Tago Range, Mindanao Island, Philippines. It is similar to V. platyphyllum Merrill and V. luzoniense S.Vidal but is distinct from the former by longer and wider leaves, longer racemes, longer bracts, glabrous corollas, and glabrescent fruits, and from the latter by longer petioles, leaf glands distributed along the blade margin, glabrous rachis, and lanate filaments. Vaccinium carmesinum bears the widest leaves among Philippine Vaccinium. Its discovery increases the number of Vaccinium species recognized in the Philippines to 37.more » « less
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null (Ed.)Vaccinium hamiguitanense, a new species from the Philippines, is described and illustrated. The new species is most similar to V. gitingense Hook. f. but differs by having smaller leaf blades, leaf blade margins with 2 to 4 impressed more or less evenly distributed crenations (glands) per side, inflorescences with fewer flowers, shorter pedicels that are puberulent and muriculate, and a glabrous floral disk. The new species is endemic to Mt. Hamiguitan Range Wildlife Sanctuary in Davao Oriental Province of Mindanao Island in Tropical Upper Montane Rain Forest and low (“bonsai”) forest on clay derived from ultramafic rock. We assign an IUCN Red List preliminary status as Data Deficient.more » « less
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x (Ed.)A new species of blueberry, Vaccinium coarctatum M.N.Tamayo & Fernando, from the dwarf forest on ultramafic soil of Dinagat Island, Philippines, is described. It closely resembles Vaccinium hamiguitanense P.W.Fritsch but is distinct from that species in having a longer inflorescence, shorter pedicels, longer and persistent bracteoles, white-hirsutulous calyx lobes, and shorter anther spurs. This discovery brings the number of Vaccinium species known from the Philippines to 41. A key to the small-leaved Vaccinium in the Philippines is provided.more » « less
- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Journal Article:
- https://doi.org/10.11646/phytotaxa.564.2.1
