Dendrobium polysema photo C. Solimbergo |
taxonomy | described by | Schlechter, Friedrich Richard Rudolf |
published in | Die Flora der Deutschen Schutzgebiete in der Südsee 163 1906 | |
family | Orchidaceae | |
subfamily | Epidendroideae | |
tribe | Malaxideae | |
subtribe | Dendrobiinae | |
genus | Dendrobium Swartz 1799 | |
chromosomes | 2n = 38 | |
metabolism |
CAM pathway, stomata of the leaves are open at night. |
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(K.Silvera, L.S. Santiago, J.C. Cushman, K. Winter - International Symposium on Plant Biology, August 2013) | ||
it is useful give the soluble mineal nutriens, on the roots. | ||
native of | origins | rain forests, in Papua (Bismark Range, Wau, Marobe, Northern Province, Highlands), |
Islands of Solomon (Terai Ise, Guadalcanal, Santa Ysabel), Vanuatu (Sanma, Espirito Santo, Pentecost), | ||
Santa Cruz and Bouganville | ||
altitude | Papua 1200 - 1900 m ( 3960 - 6270 ft) - Pacific Islands 150- 700 m (495 - 2310 ft) | |
habitat |
climate informations from Bulolo (Morobe, Papua) |
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Köppen climate classification : Af, humid tropical climate of the rainforest | ||
(no winter season, more abundant rainfall) | ||
the weather station data (temperatures are calculated for an altitude of 400 m / 1320 ft) : | ||
photoperiod | in Bulolo this orchid bloom with a photoperiod, that varies during the year, from 12 h 28 m' to 11 h 32 m' | |
life form | epiphyte | |
brightness | partial shade | |
inflorescence | length | 22 - 30 cm (8.8" - 12"), apical |
nr flowers | 16 - 22 | |
size | single flower 4 L 4 cm (1.6" L 1.6") - inflorescence 22 L 11 cm (8.8" L 4.4") | |
duration | inflorescence lengt ≈ 80 days | |
time | to bloom from birth, ≈ 60 days | |
CITES | appendix | II |