Coelogyne tomentosa (synonym massangeana) Grown by our member Ralf Wahl Rafi Wahl in his greenhouse. The species is from the mountainous regions of Malaysia, Sumatra, Borneo, and Java in river valleys at elevations of 1150-2100m, which makes it a cool to cold-growing orchid. In summer in its natural habitat, the average day temperature is 73 F. However, this is considered one of the easier coelogynes to grow, and this plant has handled the NJ heat easily and shows no heat stress. Once the spikes