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Phragmipedium pearcei (Reichenbach fil.) Rauh & Senghas

• Described: Reichenbach fil. in Hamburger Garten- und Blumenzeitung 21: 297 (1865)
• Transferred: Rauh & Senghas in Die Orchidee 26: 298 (1975)
• Etymology: Named for its discoverer, Richard Pearce.
• Varieties & Forms: none
• Synonyms:
  Phragmipedium ecuadorense Garay in Orchidaceae 225(1) in Flora of Ecuador, 9 (1979)
• Chromosome Count (Karasawa 1980):
• as Phrag. pearcei, type 1

  2n =	metacentrics	telocentrics	n.f.
  20	16	4	36

• as Phrag. ecuadorense

  2n =	metacentrics	telocentrics	n.f.
  22	14	8	36

• Chromosome Count (Wimber 1983):

  2n =	metacentrics	telocentrics	n.f.
  20, 22	--	--	--

• Chromosome Count (Atwood 1984):

  2n =	metacentrics	telocentrics	n.f.
  22	18	4	40

Plant Habit

• Leaves: 20-40 cm long, 0.5-1 cm wide, keeled, above dark green, below light green
• Inflorescence: 4-9 flowered, unbranched, 10-45 cm long, dark brown-maroon, pilose
• Bloom: green to yellowish green and white, brown-maroon markings, margins white
• Plant: rhizomes stoloniferous, up to 5 cm long

Habitat Data

• Distribution -
  
• Elevation: 200-1200 m
• Peak Flowering in the Wild: year-round
• Ecology: "Usually found clinging to rocks along streams and rivers [sometimes below the high-water mark], but plants have been found in Equisetum marshes, as well as from trees on the edge of wet forest." (McCook 1989)
• Mean Temperature Range: ?°C
• Light: ?
• Medium: ?
• Water: constantly wet

Sources:

• Atwood, J.T. Jr. "The Relationships of the Slipper Orchids (Subfamily Cypripedioideae, Orchidaceae)." Selbyana 7, no. 2/4 (Aug 1984): 129-247.
• Dodson, C.H., and J.T. Atwood, Jr. "Nomenclature Notes, Phragmipedium pearcei and Phragmipedium ecuadorense." American Orchid Society Bulletin 61, no. 12 (Dec 1992): 1218-19.
• Hooker, W.J. "Cypripedium Caricinum. Sedge-Like Lady's Slipper." Curtis's Botanical Magazine 90 (1864): Tab. 5466. <view article>
• Karasawa, K. "Karyomorphological Studies in Phragmipedium, Orchidaceae." Bulletin of the Hiroshima Botanical Garden 3 (Dec 1980): 1-49.
• McCook, Lucile M. "Systematics of Phragmipedium (Cypripedioideae; Orchidaceae)," Ph.D. dissertation, Cornell University, 1989.
• McCook, Lucile M. "An Annotated Checklist of the Genus Phragmipedium." Orchid Digest special publication (1998): 1-12.
• Garay, L.A. 225 (1). Orchidaceae: Cypripedioideae, Orchidoideae, Neottioideae. Flora of Ecuador, vol. 9, 1978.
• Wimber, D.E. "Phragmipedium Cytology - I - Diploidy and Polyploidy in the Hybrids." American Orchid Society Bulletin 52, no. 9 (Sep 1983): 933-39.

Primary Hybrids

Primary Hybrids - registered as Phrag. ecuadorense

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Page Created By: Stephen Manza
Last Updated: 8-18-06
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