Cypripedium flavum P.F. Hunt & Summerh. 1966 SECTION Cypripedium SUBSECTION Obtusipetala
Photo courtesy of Rogier van Vugt © and his Orchid webpage
Photo courtesy of Botanická zahrada a arboretum Mendelova zemedelská a lesnická univerzita v Brne, Brno, Czech
Photo by © David Llewelyn and his Koolplants website
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EARLY
Common Name The Yellow Cypripedium - In China Huang Hua Shao Lan
Flower Size 2 1/2 to 3 1/2" [6.25 to 8.75 cm]
Found in souther Gansu, western Hubei, Sichuan, southeastern Xizang and northwestern Yunnan provinces of China in open woodlands or under scrub in grassy to stony locations at higher elevations of 1850 to 3700 meters as a medium to large sized, cool to cold growing terrestrial with an erect, brown, pubescent stem provided with several basal sheaths and carrying 6 to 10, well spaced, ellipitic to ellipitc-lanceolate, pubescent and shortly ciliate on both sides, acute to acuminate apically leaves that blooms in the late spring and early summer on a solitary [rarely 2] flowered, slender stalked, 2 1/2 to 9" [6.25 to 22.5 cm] long, terminal inflorescence with foliaceous, ellipitc-lanceolate, much longer than the ovary floral bracts and carrying color variable flowers.
Synonyms Cypripedium luteum Franch. 1828
References W3 Tropicos, Kew Monocot list , IPNI ; Die Orchideen Schlechter 1915 as C luteum; Encyclopedia of Cultivated Orchids Hawkes 1965 as C luteum; Die Orchideen 3 Auflage Bd 1 Sonderabdruck aus Schlechter Lieferung 4 193 to 256 Brieger, Maatsch and Senghas 1971 as C luteum; Orchid Digest Vol 57 No 1 1993 photo fide; Wild Orchids of China Tsi, Chen Mori 1997; Orchid Digest Vol 62 #1 1998 photo fide; Native Orchids of China in Colour Singchi, Zhanhuo and Yibo 1999 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 40 pg 2492 - 2564 Brieger 2000; Rudolf Schlechter Die Orchideen Band 1C lieferung 40 pg 2492 - 2564 Brieger 2000 as C luteum; Australian Orchid Review Vol 66 No 6 2001 photo; AOS Bulletin Vol 75 No 12 2006 photo fide; Orchid Digest Vol 71 No 1 2007 photo; AOS Bulletin Vol 76 No 2 2007 photo fide; AOS Bulletin Vol 76 #6 2007 photo fide; Australian Orchid Review Vol 72 No 6 12/07-1/08; Orchid Digest Vol 71 #1 2008 photo fide; Native Orchids From Gaoligongshan Maountains, China Xiaohua, Xiaodong and Xiaochun 2009 photo fide; A Field Guide to the Orchids of China Singchi, Zhongjian, Yibo, Xiaohua and Zhanhuo 2009 photo fide; Flora of China Vol 25 Zhengyi, Raven & Deyuan 2009; Flora of China Vol 25 Illustrations Zhengyi, Raven & Deyuan 2010 drawing fide; Orchids of Huanglong Perner, Tang Si-Yuan 2007 photos fide; The Wild Orchids in Yunnan Xu Xiang Ye & Liu 2010 photos fide; AOS Bulletin Vol 85 #3 2016 photo fide; Atlas of Native Orchids of China Vol 1 Jin Xiaohua, Li Jianwu and Ye Deping 2019 photo fide
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