Advanced Search

Flowering Quillwort is a tufted annual with leafless stems that are 3-20 cm high. The linear basal leaves are 2-25 cm long, are round in cross-section, and have a broad base that sheaths each flower stem. Male, female, or bisexual flowers are borne in an open spike that is 5-40 mm long and at the tops of stems, which are shorter than the leaves. Additional female flowers may be found partly encl...

Water Howellia is a glabrous, much-branched, annual, aquatic herb with fragile, submerged and floating stems that are up to 100 cm tall. The simple, alternate or occasionally opposite or whorled stem leaves are narrowly linear, 1-5 cm long, and entire-margined. Beneath the surface of the water, small flowers that produce seeds without opening are solitary in the leaf axils. Once the stems reach ...