Whilst birding the Talea Valley we came across a number of large flowering
Aloe castellorum. This is a medium-sized aloe with solitary rosettes of up-turned pale green leaves that have green spines that darken with age. Unbranched flower spikes rise about 60 centimeters above the leaves bearing waxy greenish-yellow flowers that at first point outwards as buds then lie flat against the spike when open. This is a drought resistant species found in the highlands of Saudi Arabia and Yemen.
