Got back home yesterday. The X. lindenii inflorescences were no where to be seen. I dug around in the leaf mulch and there they were all withered. The plant itself was wilting. My automatic irrigation system had failed some time is the past few days. After some hand watering it recovered.
Unfortunately my Cyrtosperma johnstonii was in a very poor state. The wilted leaves were starting to brown off. Heavy watering got them standing up a bit so I'm hoping the plant will recover.
While in Cairns the other day I went into a nursery and saw their X. lindenii were all flowering as well. The whole inflorescence looked identical to mine, no apparent variation. Looks like it's a winter/dry season flowerer.