Bulbophyllum

Finding

SITF confirms this plant as Bulbophyllum fenestratum (Yellow form) (Jul 2025). This species is similar to B. taeniophyllum; however, this species has longer narrower flowers than B. taeniophyllum. The IOSPE has photos of both colors of B. dentiferum, which is synonymous with B. fenestratum. Also the IOSPE shows B. taeniophyllum as a yellow form, but adds the statement "Often cited as a synonym of Cirrhopetalum (Bulbophyllum) fenestatum [sic] but differs in the longer, narrower flowers."

Flower Natural Spread Length: 1.5

Flower Natural Spread Width: 0.4

Dorsal Sepal Length: 0.4

Dorsal Sepal Width: 0.3

Lateral Sepals Width: 0.4

Petals Width: 0.1

Judging Center: Puerto Rico

Award Number: 20246317

Award Date: December 07, 2024

Awarded As: HCC

In reviewing the prior awards to this species, there are two prior cultivars both having the same clonal name 'Rainbow' but they are very different flowers. It seems that there may be some confusion on this species, so I would like to have this one evaluated and also determine which of the prior two awards is correctly named and what the other might be.

This is the award description for this most recent award:
Fifty-nine flowers on three umbellate inflorescences up to 20 cm; dorsal sepal and petals mustard, stippled burgundy; lateral sepals fused, light mustard, speckled light burgundy throughout; dorsal sepal hooded, concave, apex with hair-like projection; petals porrect, margins ciliated; lip fleshy, articulate and deflexed, chalk white, speckled old rose; substance slightly firm; texture crystalline, dorsal sepal and lip waxy.

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Learn more about the Bulbophyllum genus