Physosiphon asperrimus (Luer) Luer 2006

TYPE Drawing by Carl Luer


Common Name or Meaning The Very Exasperate Physosiphon [refers to the inner surface of the sepals]

Flower Size .4" [1 cm]

Found in Azuay province of Ecuador at elevations around 1500 meters as a miniature sized, cool growing, densely caespitose epiphyte with slender, erect ramicauls occasionally prolific, enveloped by a tubular sheath below the middle 2 to 3 others at the base and carrying a single, coriaceous, elliptical, obtuse, cuneate below into the petiolate base leaf that blooms in the late summer and early fall on an erect, peduncle 1.6 to 2" [4 to 5 cm] long, arising through a spathe, rachis 3.2 to 2.6" [8 to 9 cm] long, loose, subsecund, simultaneously several flowered inflorescence with the tubular floral bract as long as the pedicel and carrying flowers with white sepals that are bright orange above the middle, white petals and a white lip.

"Similar to P tubatus but distinguished by the broader leaves about as long as the ramicauls, a dense brush-like pubescence on the inner surfaces of the sepals and the smooth, bicarinate, apical lobe of the lip." Luer 2007

Synonyms Pleurothallis asperrima Luer 1981; Stelis asperrima (Luer) Pridgeon & M.W.Chase 2001

References W3 Tropicos, Kew Monocot list , IPNI ;

Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986;

Lindleyana Vol 16 No 4 2001 as Stelis asperimus

Icones Pleurothallidinarum Vol XXVIII A Reconsideration of Masdevallia Systematics of Specklinia Luer 2006;

Icones Pleurothallidinarum Vol XXIX A Third Century of Stelis In Ecuador Systematics of Apoda-Prorepentia Luer 2007 Drawing fide