This chapter discusses the different aspects of the Involucrum. It is the third kind of Angraecum terrestre and its leaves resemble those of the first kind, for they are full of ridges and folds, at the back with sharp protruding ridges down its length, but finer than with the first one, thin, smooth, and of a blackish green, each one growing on a ridged stem, and clasping each other, like the Curcuma, together with the stem some three to four feet long, two hands wide. The flowers and fruits appear in a peculiar manner, not like an Angrek, but more like a lobba. A short spike rises up from the roots from between the leaves, fashioned from dirty-green leaves or scales, like the Hypophyton of the Globba durion or Curcuma, but much smaller.
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