triquetrous

“It is a native of Albania, and belongs to that section of its extensive genus having triquetrous and obtuse leaves, or blunt three-sided foliage, as formed by a well developed keel.”

Hardy Perennials and Old Fashioned Flowers Describing the Most Desirable Plants, for Borders, Rockeries, and Shrubberies.

“The spikelets are plano-convex, orbicular to oblong, obtuse, secund, 2-ranked on the flattened or triquetrous rachis of the spike-like branches of a raceme, one-flowered and falling off entire from the very short or obscure pedicels.”

A Handbook of Some South Indian Grasses

“The _inflorescence_ is a compound spike varying in length from 4 to 10 inches, erect; the main rachis is triquetrous, dorsally rounded, glabrous and very thinly scaberulous at the edges.”

A Handbook of Some South Indian Grasses

“The _spikes_ are usually few, 2 to 6, 3 to 6 inches long, with a triquetrous, narrowly winged rachis.”

A Handbook of Some South Indian Grasses

“The superior one fourth division of this stem is formed into a pyramidal spike of flowers, rather diffuse; these flowers are of the hexandria, large, and expanded; of a dark purple colour, delicately powdered with green, yellow, and red, and divided into six parts, or petals; these are succeeded by triquetrous dry pericarpi, when ripe.”

Travels Through North & South Carolina, Georgia, East & West Florida, the Cherokee Country, the Extensive Territories of the Muscogulges, or Creek Confederacy, and the Country of the Chactaws; Containing An Account of the Soil and Natural Productions of Those Regions, Together with Observations on the Manners of the Indians.

“These branches, with their many subdivision, terminate in simple racemes of pale incarnate flowers, which make a fine appearance among the leaves; the flowers are succeeded by desiccated triquetrous pericarpi, each containing a single kernel.”

Travels Through North & South Carolina, Georgia, East & West Florida, the Cherokee Country, the Extensive Territories of the Muscogulges, or Creek Confederacy, and the Country of the Chactaws; Containing An Account of the Soil and Natural Productions of Those Regions, Together with Observations on the Manners of the Indians.