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Orchid Species: Altensteinia pilifera

Kew currently accepted name is Porphyrostachys pilifera

Altensteinia pilifera is an orchid species identified by Kunth in F.W.H.von Humboldt in 1816. Culture information and photos for this orchid are commonly detailed under the currently accepted name of Porphyrostachys pilifera.
Genus
Altensteinia (Alt.)
Grex
pilifera
Parents
Species
Author
Kunth in F.W.H.von Humboldt
Year
1816
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ORIGIN: This litho-terrestrial is found in Ecuador and Peru in dry montane regions with scattered trees at elevations of 1100 to 2800 meters.

DESCRIPTION: Text By Joseph Dougherty: Grows cold to cool ; lithoterrestrial; bright light to full sun. I've seen this plant in the wild near Cuenca, Ecuador, growing on volcanic rock in full sun in baking temps during the day and really cold at night. Very tough and quite uncommon in cultivation. This litho-terrestrial is found in Ecuador and Peru in dry montane regions with scattered trees at elevations of 1100 to 2800 meters. This orchid has fasciculate, stout, tuberous roots with oblong-lanceolate to oblanceolate, acute leaves that narrow to the basal sheathing base and are withered or absent by blooming time in the spring and summer when a stout, slender, glabrous stem enveloped by tubular-cylindric, scarious sheaths with a free, triangular, acuminate apex stem arises with a showy, thick-cylindric, several to many flowered, to 5 1/2" [to 14 cm] long, subdense or dense inflorescence with cucullate-ovate, acuminate floral bracts that exceed the length of the glabrous ovary and carries relatively large, showy, glabrous, non-resupinate flowers.

FLOWER SIZE: 3/4 inch [2 cm] -- information provided by Jay Pfahl, author of the Internet Orchid Species Encyclopedia (IOSPE).
Other Names
Genus Name Genus Grex Name Year Author
Add+ Porphyrostachys Porp pilifera 1854 (Kunth) Rchb.f.
Add+ Stenoptera Sna cardinalis 1840 Lindl.
Add+ Stenoptera Sna pilifera 1940 (Kunth) C.Schweinf.
Most awarded/recent cultivars: Porp. pilifera 'Herrenhausen' (2011) Porp. pilifera 'Lillian Sparks' (2002)
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