Cyperaceae

Definition and stakes

Robert Brown,  The miscellaneous botanical works of Robert Brown (1866)

“ CYPERACEÆ. In Terra Australis this is a very extensive order, consisting already of more than 200 species. It contains, however, fewer peculiarities in structure than several other orders that are much less numerous. Its maximum appears to be in the principal parallel; but the species observed solely within the tropic exceed one third of the whole number. Cyperaceæ, in many respects, are nearly related to Restiaceæ, and when furnished with a true perianthium are distinguishable from the monospermous genera of that order, solely by the different position of the embryo in the seed. ”
Source: Wikisource

1911 Encyclopædia Britannica (1911)

“ The best distinctions are found in the position of the embryo in relation to the endosperm—lateral in grasses, basal in Cyperaceae—and in the possession by Gramineae of the 2-nerved palea below each flower. Less absolute characters, but generally trustworthy and more easily observed, are the feathery stigmas, the always distichous arrangement of the glumes, the usual absence of more general bracts in the inflorescence, the split leaf-sheaths, and the hollow, cylindrical, jointed culms—some or all of which are wanting in all Cyperaceae. ”
Source: Wikisource

Portrait of Eugenius Warming Eugenius Warming,  A handbook of systematic botany (1895)

“ The Cyperaceæ are regarded as a form derived from the Juncaceæ through reduction, and associated with this, as is so often the case, there is a complication of the inflorescence; the Dipsacaceæ are again regarded as a form proceeding from the Valerianaceæ by a similar reduction, and these in their turn as an offshoot from the Caprifoliaceæ, etc. Of course these principles of systematic arrangement could only be applied very generally; for teaching purposes they have often required modification. ”
Source: Gutenberg

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