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[SANS] S. volkensii and S. intermedia

Until recently (remember this article was written in 1979) no authentic
material existed and only a few characteristics were known of S. volkensii,
discovered by G. Volkens near Mt Kilimanjaro and described by Gurke. Now it
can be considered as very close to, if not identical with, S. intermedia.
Both species usually produce 3-7 leaves to a stem, the outer semi-circular
in cross-section, the inner cylindrical with a channel down the face. S.
intermedia possibly has a more compact habit, with leaves about 2 cm thick
and usually up to 50 cm long. the inflorescences of both species are
splendid, dense, spike-like racemes, but for their formation they require
good light and sparse watering.

Frances Verrity
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