Pleurothallis ruizii [Damian] in ed. SUBGENUS Acianthera SECTION Sicariae SUBSECTION Sicariae Luer 1986 TYPE drawing by © Greta Damian and Brittonia 70: 73 2017 Acianthera rodolfo-vasquezii and A. ruizii, spp. nov. (Orchidaceae:
3 Pleurothallidinae) from the montane cloud forest of the central
Andes, Peru
Common Name Marlen's Pleurothallis [Senior authors matenal family name]
Flower Size .2" [5 mm]
Found in Oxapampa department of Peru in dwarf forests at elevations around 2000 meters as a small sized, cool to cold growing epiphyte with erect, sub-oblique,
sharply winged, broader at the junction with
the leaf ramicaul enclosed above the
base by a thin tubular sheath and carrying a single, apical, erect, coriaceous, narrowly
elliptical, acute, with the margins
continuous with the wings of the ramicaul, sessile base leaf that blooms in the fall and winter on a borne
from the apex of the ramicaul at the base of
the leaf, subtended by a thin spathe, peduncle .08" [2 mm] long,
congested, .16" [4 mm] long overall, successively single, 2 flowered inflorescence with inflated floral bracts.
"Acianthera ruizii is most similar to
P tokachii Luer from which it is distinguished by the green-yellowish to dark reddish
flowers (vs. dark brown), petals with a prominent
longitudinal carina along one margin above the middle (vs. none), and ovate lip, with the sides not
deflexed and a pair of low calli extending from
above the basal lobes to the apex (vs. ovoid lip,
strongly deflexed sides and with a pair of tall calli
extending to the middle third of the lamina), ovary
smooth (vs. pubescent) and column pubescent
(vs. smooth).
Synonyms *Acianthera ruizii Damian 2017
References W3 Tropicos, Kew Monocot list , IPNI ;
Brittonia 70: 73 2017 Acianthera rodolfo-vasquezii and A. ruizii, spp. nov. (Orchidaceae:
3 Pleurothallidinae) from the montane cloud forest of the central
Andes, Peru as Acianthera ruizii Drawing/photo fide
Anales Jard. Bot. Madrid 75(1)e069: 13 2018 A taxonomic synopsis of Acianthera (Orchidaceae: Pleurothallidinae) in Peru, including two new species Damian, Chiron and Mitidieri 2018 as Acianthera ruizii
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