Bulbophyllum sungaiutikense Kurniawan, Yudistira & Mustaqim, 2022 - sect. Beccariana

Etymology:— Sungai Utik dusun kecil tempat ditemukannya angrek ini.

Distribution:— Tumbuhan endemik di Sungai Utik, Kabupaten Kapuas hulu Kalimantan Barat - Indonesia (type locality).

Habitat and ecology:— Tumbuh secara terrestrial pada lapisan humus tanah gambut atau secara epifit pada semak-semak atau pepohonan kecil. Menyukai suhu yang hangat (23–33°C) dengan kelembaban tinggi (80–90%) serta berada pada naungan canopy antara 75–85%, pada ketinggian 70–100 m.

Phenology:— Masa berbunga antara Januari–Maret.

Conservation status: — Diketahui dari type locality yang berada pada hutan adat masyarakat dayak iban yang jarang dijamah. Berdasar Guidelines IUCN (2012) dan IUCN Standard Petition and Committee (2022), species ini dimasukan dalam kategori data tidak cukup (data deficient - DD) sampai adanya penelitian selanjutnya.

Bunga

Tanaman

Plate

Description :— Epiphytic or creeping terrestrial herbs. Rhizome 1.0− 1.5 mm in diameter, distance between pseudobulbs 2.0− 3.7 cm. Pseudobulbs subconical cylindric, slightly flattened, 3.0−3.4 × 0.6−0.7 cm. Leaf petiole 0.5−1.0 cm long, blade elliptic to ovate, 8.8−9.8 × 2.5−3.7 cm, length per width ratio 2.6−3.5, acuminate, margin entire. Inflorescence from the base of pseudobulb, more or less patent, 6.6−9.5 cm long, 1-flowered, peduncle 5.5−9.4 cm, with 4 flowerless bracts, uppermost bract ovate, 9.2−9.5 × 4.5−4.9 mm, apex acute, basal node of pedicel approximately level with the floral bract attachment. Flowers opening widely, fragrance of rotten fish at anthesis, pedicellate ovary 12−15 mm long, straight, ribs rounded, glabrous. Sepals and petals yellow to cream with purple veins and margins, labellum purple at margins, paler towards the middle, dorsal sepal free, somewhat incurved, narrowly triangular-ovate, 27.2−34.1 × 6.8−8.4 mm, length per width ratio 3.9−4.1, acute, margins entire, glabrous, 5-veined, lateral sepals oblique, the lower 4/5 tetragonal, upward narrowly triangular, 31.7−34.6 × 12.4−14.7 mm, length per width ratio 2.4−2.6, petals triangular, slightly falcate, 22.2−24.8 × 6.5−6.7 mm, length per width ratio 3.4−3.7, acute, margins entire, recurved at the base, glabrous, 5-veined, labellum slightly recurved in lowest third, dorsoventrally flattened near the base, subsagittate, 22.7−24.0 × 7.2−9.0 mm (not flattened), length per width ratio 2.7−3.2, apex long caudate, margin curved upward, entire, adaxially concave from the basal towards apical part due to upturned margins, more slightly so towards the apex, with shallow, longitudinal median furrow from the base to near the apex, gradually verrucose toward the margin, verrucae conical, abaxially with distinctly grooved on the base, upward with two thin ridges towards the apex, glabrous; column including stelidia 2.9−3.2 mm long, glabrous, stelidia deltoid, obtuse to rounded, with additional short antrorse subcuspidate part, c. 1.0 mm long, tooth present, patent to horizontal, distinct in half of the lower margins, narrowly triangular, 2.38−2.40 mm long, tapering toward the blunt tip, anther cap obdeltoid, the anterior part of connective drawn out, slightly erose, ridge distinct abaxially, glabrous. Pollinia 4, in two pairs.

Referensi :

Firman H. Kurniawan, Yuda R. Yudistira and Wendy A. Mustaqim. 2022. A New Species of Bulbophyllum (Orchidaceae: Epidendroideae) from Kalimantan Barat, Indonesia.  Phytotaxa. 544(1); 89-94. DOI:  10.11646/phytotaxa.544.1.8

Dosen Biologi UNSAM ikut temukan spesies baru anggrek Bulbophyllum Sungai Utik mipabiologi.UNSAM.ac.id/2022/05/06/dosen-biologi-temukan-spesies-baru-anggrek 

Bulbophyllum sungaiutikense F. H. Kurniawan, Yudistira & Mustaqim 2022, sp. nov., Zenodo.org