Pterichis triloba (Lindl.) Schltr. 1911 SECTION Acraea

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Common Name The Three Lobed Pterichis

Flower Size .2" [5 mm]

Found in Norte de Santander, department of Colombia, Pichincha province of Ecuador and Peru in moss on rocks at elevations of 2600 to 4100 meters as a small to large sized, cold growing terrestrial or lithophyte with a [when present] solitary or rarely 2, basal, oblong-elliptic, acute to subacute, gradually narrowing below into the petiolate base leaves that blooms in the later summer on a terminal, glabrous to sparingly glandular-tomentose, to 5.6" [14 cm] long, laxly to subdensely to 20 flowered inflorescence with several clasping, distant sheaths and has ovate to lanceolate-ovate, glandular-pubescent, usually shorter than the ovary floral bracts.

"According to Morales 1986 the 3 lobed lip and 2 veined petals distinguish this species from Pterichis pauciflora which has a triangular elliptic lip and single veined petals and from Pterichis multiflora which has 3 veined petals but we examined specimens of P triloba with 3 veined petals, so the number of veins is not a distinguishing factor between both species. They can be separated by the lip shape and size." Szlachetko & Kolanowska 2020

Synonyms *Acraea triloba Lindl. 1845;

References W3 Tropicos, Kew Monocot list , IPNI ;

Ann. Mag. Nat. Hist. 15: 386 Lindley 1845 as Acraea triloba

* Bot. Jahrb. Syst. 45: 389 Schlechter 1911

Orchids of Peru vol 1 Schweinfurth 1958;

Flora of Ecuador No 9 225[1] Garay 1978;

Orquideologia Vol XVI No 3 Morales 1986 drawing fide;

Native Ecuadorian Orchids Vol 4 Dodson 2003 drawing/photo good;

LANKESTERIANA 14(2): 102 Kolanowska 2014 Drawing fide;

PeerJ 9(e10807): 33 (2021 Synopsis of Ecuadorian Pterichis [Orchidaceae] Kolanowska 2021 Drawing/collection sheet fide;

Materials to the Orchid Flora of Colombia Vol 3: 156 Szlachetko & Kolanowska 2020 drawings fide

Materials to the Orchid Flora of Colombia Vol 3: 157 Szlachetko & Kolanowska 2020 drawings fide

Materials to the Orchid Flora of Colombia Vol 3: plates 191-195 Szlachetko & Kolanowska 2020 photos fide

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