Odontoglossum astranthum Linden & Rchb. f. 1867 SECTION Lobulatum SERIES Astranthumm
Photo by © Jay Pfahl.
Photo by © Lourens Grobler.
LATE
EARLY
Common Name The Star Flowered Odontoglossum
Flower Size 1.6" [4 cm]
Found in Ecuador and Peru in seasonally wet cloud forests at elevations of 2400 to 3000 meters as a small sized, cold growing epiphyte or terrestrial with clustered, ovate to pear-shaped, compressed, ancipitous, rugose and longitudinally ridged with maturity pseudobulbs enveloped basally by several distichous, imbricating, leafless below and leaf-bearing above sheaths carrying 2, apical, linear to lanceolate, obtuse, strongly keeled below, channeled along the midvein above and conduplicate to form a petiole-like base leaves that blooms in the late spring and early summer on an axillary, arising on a recently matured pseudobulb, arching to subpendent, paniculate, with the few branches held to the apical half, to 36" [45 cm] long, 12 to many flowered, paniculate inflorescence with appressed, scale-like, shorter to as long as the ovary flroral bracts and carrying stellate flowers.
Synonyms Collare-Stuartense astranthum (Linden & Rchb. f.) Senghas & Bockemühl 1997; Odontoglossum loxense F. Lehm. & Kraenzl. 1899; Oncidium astranthum [Linden & Rchb.f] Chase & NH Wms. 2008
References W3 Tropicos, Kew Monocot list , IPNI ; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 as Collare-stuartense astranthum photo fide; Native Ecuadorian Orchids Vol 3 Dodson 2002 photo fide; Orchid Species Culture: Oncidium, Bakers 2006; AOS Bulletin Vol 77 No 12 2008 as Oncidium astranthum; Orchid Species of Peru Zelenko Bermudez 2009 photo fide; AOS Bulletin Vol 85 #12 2016 as Oncidium astranthum photo fide; The Odontoglossum Story Dalstrom, Higgins & Deburghgraeve 2020 drawing/phto fide
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