| Rhynchostylis gigantea var. rubrum photo C. Solimbergo |
| taxonomy | described by | (Lindley) Ridley, Henry Nicholas |
| published in | Journal of the Linnean Society , Botany 32 : 356 1896 | |
| var. rubrum | color variation | |
| described by | Sagarik, Rapee | |
| family | Orchidaceae | |
| subfamily | Epidendroideae | |
| tribe | Vandeae | |
| subtribe | Aeridinae | |
| genus | Rhynchostylis Blume 1825 | |
| 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 | western Thailand (Prachin Buri) |
| altitude | 0 - 500 m ? (1650 ft ?) | |
| habitat | climate informations from Kabin Buri (Prachin Buri, Thailand) | |
| Köppen climate classification : Aw, tropical savanna climate (with a dry season and a rainy season) | ||
| the weather station data (temperatures are calculated for an altitude of 250 m / 825 ft) : | ||
 |
||
| photoperiod | in Kabin Buri this orchid bloom with a photoperiod, that varies during the year, from 12 h 54 m' to 11 h 06 m' | |
| life form | epiphyte | |
| brightness | partial shade | |
| inflorescence | length | 10 - 12 cm (4" - 4.8"), axillary |
| nr flowers | 12 - 14 | |
| size | single flower 2.5 L 3,5 cm (1" L 1.4") - inflorescence 16 L 8 cm (6.4" L 3.2") | |
| duration | inflorescence ≈ 30 - 40 days | |
| time | to bloom from birth, ≈ 60 - 70 days | |
| CITES | appendix | II |
