Monographs Details: Diodia hyssopifolia var. hyssopifolia f. psiloclada
Authority: Maguire, Bassett. 1972. The botany of the Guayana Highland--part IX. Mem. New York Bot. Gard. 23: 1-832.
Family:Rubiaceae
Description:Latin Diagnosis - A var hyssopifolia f hyssopifolia caulibus glabris vel duobus lateribus parce puberulentibus recedit; stipularum vaginis plerumque glabris vel parce puberulentibus; foliis subtus saepe glabris 3.5-5.5 cm × 1-1.8 mm; corollis 3-4.2 mm longis.

Discussion:This form differs from typical D. hyssopifolia var hyssopifolia in having the stems glabrous or with lines of puberulence running down two sides of the stem, glabrous lower surface of the leaves, and glabrous sheaths or these with lines of puberulence.