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Rotala Linn., Mant. Alt. 1771. D.A. Webb in Tutin etal, l.c. 303; Pol. & Rech. f. in Rech. f., l.c. 8.
Ammannia Sect. Ameletia Boiss.Ammannia subgenus Rotala (L.) C.B. Clarke
Annual herbs, hygrophilous, glabrous. Stem ± quadrangular. Inflorescence axillary, solitary or spicate, in almost every axil. Flowers 4-5-merous, sessile, 2-bracteolate; bracteoles ± equalling the flower. Hypanthium campanulate or tubular-campanulate, membranous in fruit. Epicalyx present or absent. Petals persistent. Ovary oblong or 3-angled, 2-3(-4)-locular, style short. Capsule equalling the hypanthium, 2-3 (-4)-valved, faintly horizontally striate, placenta clavate. Seeds elongated or roundish.
Species about 50. Tropical or subtropical. 2 species occur in Pakistan.
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| 1 |
Leaf margin cartilaginous. Inflorescence an axillary
spike. Flowers 4-merous. Epicalyx absent. Capsule 2-
valved |
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Rotala indica |
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Leaf margin not cartilaginous. Inflorescence axillary
solitary. Flowers 5-merous. Epicalyx present. Capsule
3(-4)-valved |
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Rotala densiflora |
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Lower Taxa
Related Synonym(s):
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