Maxillaria-bicentenaria-2023-12-31 *SITF confirms that this plant is Maxillaria bicentenaria (Jan 2024).

This plant matches the description and photos of M. bicentenaria species in the Novataxa paper: "Species New to Science" The species is similar to M. pyhalae, but differs in the shape of the lip, callus and a keel-shaped ridge towards the top of the anther. There is an excellent article in Researchgate, "An Homage to Peru's Bicentenary Maxillaria bicentenaria orchidaceae, A New Species previously misidentified as M. pyhalae". This article has excellent photos, drawings and descriptions comparing and contrasting the two species.

Judging Center: WPBJC

Award Number: 20231686

Award Date: November 16, 2023

Awarded As: Maxillaria bicentenaria

Daniel Piedrahita, Country of origin Peru, previous identification provided by Kew Gardens. Pending SITF identification
66cm total length, upright climbing rhizome, one inflorescence per bulb, flower ovary curves to make flower face inward.

Plant > Overall length of growth/cane: 47 cm

Plant Leaf > number of leaves per growth or cane: 2

Plant > Leaf Length: 42 cm

Plant > Leaf Width: 5.2

Plant > Leaf Margin: rolled underneath

Plant > Leaf Shape: lanceolate

Plant > Leaf petiole length (apex of pseudobulb or stem to leaf base proper): 12 cm

Plant > Pseudobulb/Growth/Ramicaul Length: 5.5 cm

Plant > Pseudobulb/Growth/Ramicaul Width: 4.0 cm

Plant > Pseudobulb/Growth/Ramicaul Margin: fusiform

Plant > Pseudobulb/Growth/Ramicaul distance between growths along rhizome:: 11 cm

Plant >Pseudobulb/Growth/Ramicaul Root Tip Color: not visible

Inflorescence > Overall Length: 32 cm

Inflorescence > Arrangement: upright, curved at apex, flower facing backwards

Inflorescence > Distance from base of inflorescence to first bud or branch: 32 cm

Inflorescence > distance between flowers along inflorescence: n/a

Inflorescence > distance from inflorescence to base of sepals: 4 cm

Inflorescence > distance from inflorescence to base of sepals: 4 cm

Inflorescence > Floral Bracts Length: 4.5 cm

Inflorescence > Floral Bracts Width: 2 cm

Inflorescence > Ovary Length: 4 cm

Inflorescence > Ovary Width: .4 cm

Inflorescence > Ovary Shape: sickle shape...half circle

Inflorescence > Ovary Color: dark brown

Inflorescence > Ovary Texture: 6 longitudinal ridges glabrous, slightly smurfy

Flower Natural Spread Length: 4.2

Flower Natural Spread Width: 3.8

Flower > Dorsal Sepal Length: 3.8

Flower > Dorsal Sepal Width: 0.8

Flower > Dorsal Sepal Cauda Length: 0

Flower > Dorsal Sepal Cauda Width: 0

Flower > Lateral sepals or synsepal Length: 4.0

Flower > Lateral sepals or synsepal Width: 1.7

Flower > Lateral sepals or synsepal Caudae Length: 0

Flower > Lateral sepals or synsepal Caudae Width: 0

Flower > Petals Length: 3.1

Flower > Petals Width: 1.5

Flower > Petals Caudae Length: 0

Flower > Petals Caudae Width: 0

Flower > Lip or Pouch Length: 3.0

Flower > Lip or Pouch Width: 1.3

Flower > Lip or Pouch> characters of lip (calli, spurs, keels, etc.): curled and fused with mentum

Flower > Column Length: 2.3

Flower > Column Width: 0

Flower > Column Color: white

Flower > Anther Cap Color: pale tan



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