Monographs Details: Orectanthe sceptrum (E. G. H. Oliver) Maguire
Authority: Carlquist, Sherwin. 1960. Anatomy of Guayana Xyridaceae: Abutboda, Orectanthe and Achtyplola. Mem. New York Bot. Gard. 10: 63-117.
Discussion:As shown in figure (34, sepals of O. sceptrum subsp. occidcntalis
are like those of 0. ptaritepuiana except that pockets of thin-walled
parenchyma, like that in the keel region, occur in the wing regions between
veins. Liquid-preserved material was used to demonstrate the presence of
chloroplasts in this soft-walled parenchyma. The central portion of a flattened
sepal of this species, shown in figure 21, illustrates these same structural features.