Finding
SITF confirms this plant as Zootrophion arrondeauanum (Mar 2025). This plant matches the original description, photo and dissection images found in the New World Orchidaceae– Nomenclatural Notes Nomenclatural Note– Issue No. 130, March 14, 2024: "A New Species of Zootrophion Luer (Orchidaceae), Zootrophion arrondeauanum Uribe-Velez & Sauleda. It is also based on the detailed differentiation from other species provided in the description in the IPNI. The plant awarded is same plant that the dissection plate was made from in the original description.
Overall Length Of Growth Cane: 42.5 cm wide by 38 cm tall plant
Number Of Leaves Per Growth Or Cane: 1 leaf per stem, alternating overlapping sheaths on stem.
Leaf Length: 16.2 cm
Leaf Width: 8.0 cm
Leaf Shape: Ovate
Pseudobulb Distance: tightly clustered
Pseudobulb Root Tip: root tip not observed
Inflorescence Overall Length: 6.2 cm
Inflorescence Dist Bet Flowers: flowers clustered at tip
Ovary Length: 0.7 cm
Ovary Width: 0.4 cm
Ovary Color: green
Flower Natural Spread Length: 4.0 cm
Flower Natural Spread Width: 1.7 cm
Dorsal Sepal Length: 4.0 cm
Dorsal Sepal Width: 1.2 cm
Lateral Sepals Width: 1.1 cm
Petals Width: 0.2
Judging Center: PNWJC
Award Number: 20255462
Award Date: February 27, 2025
Awarded As: CBR
Sixteen flowers and twenty-nine buds on eleven inflorescences to 6.2 cm on a 42.5 cm wide by 38 cm tall plant grown in a 15.5 cm pot in bark; sixteen ovate leaves with acute tip up to 8.0 cm wide by 16.2 cm long, dark green with purple underside; plant stem covered by alternating leaf sheaths; sepals ivory, heavily veined and spotted pink, sepal margins oxblood, sepals almost completely fused with a small opening at the lateral sepal base; petals abrupt acuminate, cream , blushed pink centrally; lip delicately hinged, base to hinge point 0.2 cm, distal portion horned proximally, curled upwards distally, cream with pink spot at hinge point; column cream, anther cap yellow; substance firm; texture matte. Noted for unusual opening on flowers. Species recently described in International Plant Names Index (IPNI), Uribe Velez & Sauleda New World Orchid Nomenclature Notes 130:1 (2024).