| 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. |
|
| (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) |
|
| 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) : | ||
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| 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 |
