Thứ Bảy, 13 tháng 2, 2016

Dendrobium aduncum Lindl. 1842( Hoàng thảo thập hoa)

Hoàng thảo thập hoa - Dendrobium aduncum
Found in Assam India, eastern Himalayas, Bhutan, Sikkim, Myanmar, Thailand, Laos, Guangdong, Guangxi, Ghuizhou, Hainan, Hunan and Yunnan provinces of China, Hong Kong and Vietnam in subtropical forests and broadleaf, evergreen lowland forests and primary montane forests near rivers at elevations of 300 to 1300 meters as a medium sized, hot to cool growing epiphytic species with pendulous, terete, fractiflex, branching canes enveloped by sheaths and carrying 4 to 6, linear-lanceolate, acuminate leaves that blooms on an axillary, 2.8" [7cm] long, zigzag, racemose inflorescence arising from the leafless nodes at the apex of an older leafless canes occuring in the spring through fall with 2 to 5, long-lasting, fragrant flowers.
This species is best mounted to accomodate the growth and flowering habit and needs ample huimidity and water with only a short 3 to 4 week rest from water and fertilizer in the winter.
Similar to D hercoglossum but differs mostly in that this one has wings on the column and D linguella does not as well but it has a much more open lip and D bifurcatum has a narrow acute lip with 2 oblong violet spots at the apex of the column.
Synonyms Callista adunca (Wall. ex Lindl.) Kuntze 1891; Dendrobium aduncum var. faulhaberianum (Schltr.) Tang & F.T.Wang 1951; Dendrobium faulhaberianum Schltr. 1911; Dendrobium oxyanthum Gagnep. 1930;

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