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Paphiopedilum lawrenceanum (Reichenbach fil.) Pfitzer

• Described: Reichenbach fil. in Gardener's Chronicle, 2nd series, 10: 748 (1878)
• Transferred: Pfitzer in Pringsheim, Jahrbcher fur wissenschaftliche Botanik, 19:163 (1888)
• Etymology: Named for Sir Trevor Lawrence, avid orchid grower and president of the Royal Horticultural Society.
• Varieties & Forms:
  Paphiopedilum lawrenceanum fma. hyeanum (Linden fil. & Rodigas in Lindenia, 1:89, plate 42 (1885)) Gruss & Roeth in Caesiana, No. 12: 57-65 (1999) - albino form
• Synonyms: none
• Chromosome Count -

  2n =	metacentrics	telocentrics	n.f.
  36	16	20	52

Plant Habit

• Leaves: 5-6, up to 19 cm long, 4-7 cm long, above mottled dark and yellow green, below pale green
• Inflorescence: 1-flowered, up to 31 cm long, maroon, pubescent
• Bloom: 9-13 cm wide
• Plant: found in small colonies

  Lindenia Plate	Lindenia Plate	Lindenia Plate	Lindenia Plate

Habitat Data

• Distribution -
  
• Elevation: 300-450 m (in question)
• Peak Flowering in the Wild: ?
• Ecology: usually found on the forest floor, occasionally on moss-covered limestone rock
• Mean Temperature Range: 23-24°C
• Light: moderate shade
• Medium: leaf litter, mosses
• Water (D-drier, M-moderate, W-wetter) -

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Sources:

• Braem, Guido J., and Guy Chiron. Paphiopedilum. Saint-Genis Laval, France: Tropicalia, 2003.
• Cribb, Phillip J. The Genus Paphiopedilum. Kota Kinabalu, Malaysia: Natural History Publications in association with Royal Botanic Gardens, Kew, 1998.
• Gruss, O. "Albino Forms of the Slipper Orchids." Orchid Digest 69, no. 4 (Oct/Dec 2005): 204-29.
• Hooker, J.D. "Cypripedium lawrenceanum. Native of Borneo." Curtis's Botanical Magazine 105 (1879): Tab. 6432. <view article>
• Karasawa, K. "Karyomorphological Studies in Paphiopedilum, Orchidaceae." Bulletin of the Hiroshima Botanical Garden 2 (Mar 1979): 1979.
• Ooi, Michael on the Slipper Orchid Forum <http://www.slipperorchidforum.com/forum/showthread.php?t=4212>

Primary Hybrids

Paph. lawrenceanum x	Hybrid
delenatii	Pourpoint
bellatulum	Lawrebel
concolor	Conco-Lawre
godefroyae	Dom Carlos
niveum	Antigone
boxallii	Thayerianum
charlesworthii	Decipiens
druryi	Cybele
exul	Julia
fairrieanum	Streathamense
hirsutissimum	Mulus
insigne	Umlauftianum
spicerianum	Radiosum
villosum	Luridum
acmodontum	Herbert Fouraker
argus	Io
barbatum	Almum
bullenianum	Michel-Christophe Hervy
callosum	Maudiae
ciliolare	Lucie
curtisii	Gowerianum
dayanum	Littleanum
hookerae	Enfieldense
javanicum	Dewey's Delight
mastersianum	William Mathews
purpuratum	Tashmoo
sukhakulii	Chiara
superbiens	Euryale
tonsum	Madame Barbey
urbanianum	Jeanette Judson
venustum	Auroreum
wardii	Starry Sky
glanduliferum	Red Baroness
kolopakingii	Wössner Kololaw
lowii	Macfarlanianum
parishii	Elizabethiae
philippinense	Charles Steinmetz
rothschildianum	Wiertzianum
sanderianum	Ultor
stonei	Numa
chamberlainianum	Hiero
glaucophyllum	Lawrencifillum
primulinum	Prilawrence

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Page Created By: Stephen Manza
Last Updated: 7-23-06
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