The flowers are solitary or cymose and vary in colour from white to purple.    From Wordnik.com.  [Chapter 30] Reference

The instances just cited all occur in plants having an indefinite form of inflorescence; but the production of a tuft of leaves or of a leafy shoot above or beyond the inflorescence is not confined to plants with this habit of growth, for Jacquin figures and describes an instance of this nature in the cymose flower-stems of a.    From Wordnik.com.  [Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants] Reference

Zoosporangia formed from their tips, generally cylindrical or slightly clavate, rarely short and in series; the later ones arising within the empty membranes of preceding ones by upward growth of their basal walls, or rarely beside them by cymose branching.    From Wordnik.com.  [Transactions of the American Philosophical Society] Reference

Prolification in both varieties is also more frequently met with in branched inflorescences than in those in which the flowers are sessile; but the degree of branching seems less material, inasmuch as this malformation is more commonly recorded as occurring in racemes than in the more branched panicles, &c. From the similar arrest of growth in length, in the case of the flower, to that which occurs in the stem in the case of definite inflorescence, it might have been expected that axillary prolification would be more frequent in plants having a cymose arrangement of their flowers than in those whose inflorescence is indefinite; such, however, is not the case.    From Wordnik.com.  [Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants] Reference

Flowers cymose.    From Wordnik.com.  [The Medicinal Plants of the Philippines] Reference