Water whorl-grass
Catabrosa aquatica
Synonyms: Glyceria dulcis, Catabrosa angusta, Catabrosa aquatica var. pamirensis, Aira aquatica, Catabrosa viridula, Catabrosa aquatica f. zapalowiczii, Catabrosa aquatica f. latifolia, Catabrosa aquatica var. laurentiana, Catabrosa aquatica f. uniflora, Agrostis tillieri, Hydrochloa airoides, Aira scabra, Catabrosa minor, Poa dulcis, Glyceria aquatica, Catabrosa kneuckeri, Poa airoides var. uniflora, Catapodium aquaticum, Catabrosa pseudairoides, Poa pseudairoides, Aira aquatica var. duplicata, Catabrosa scabra, Catabrosa aquatica subsp. capusii, Catabrosa ochroleuca, Glyceria aquatica var. americana, Festuca airoides, Catabrosa aquatica var. atrata, Catabrosa aquatica var. ochroleuca, Catabrosa aquatica var. subtilis, Colpodium aquaticum, Poa grandiflora, Glyceria catabrosa, Molinia aquatica, Diarrhena aquatica, Poa airoides var. purpurascens, Catabrosa capusii, Catabrosa aquatica f. schurii, Catabrosa aquatica var. uniflora, Catabrosa aquatica var. terrestris, Glyceria aquatica var. acutiflora, Glyceria aquatica var. latifolia, Catabrosa aquatica var. angusta, Catabrosa elbursensis, Catabrosa aquatica var. minor, Glyceria viridula, Colpodium elbursense, Aira aquatica var. multiplicata, Catabrosa aquatica var. littoralis, Poa rivularis, Aira aquatica var. ochroleuca, Catabrosa aquatica var. major, Catabrosa atrata, Catabrosa sikkimensis, Aira viridula, Catabrosa aquatica subsp. ochroleuca, Glyceria ochroleuca, Catabrosa airoides, Catabrosa aquatica subsp. pseudairoides, Catabrosa aquatica f. major, Catabrosa aquatica var. chionophila, Melica aquatica, Catabrosa aquatica var. latifolia
Western Herbalism Properties
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Botanical Description
Catabrosa aquatica is a soft, spreading perennial grass of the Poaceae family growing 10-70 cm tall from creeping, rooting stolons that form loose mats in shallow water and saturated mud. The culms are weakly ascending, often partly floating, and bright pale green. Leaf blades are flat, soft, smooth on both surfaces, 4-10 mm wide and 5-15 cm long, with conspicuous ribbed sheaths and a prominent membranous ligule 3-8 mm long; the blade tip is rounded or abruptly pointed. The inflorescence is a delicate open, pyramidal panicle 8-25 cm long with whorls of fine, smooth, widely spreading branches bearing small purplish to greenish spikelets 2-3 mm long, each with 2-3 florets. Lemmas are obtuse and conspicuously three-nerved with the nerves projecting into small teeth at the truncate apex. Native to shallow streams, ditches, springs, and wet meadows across the temperate Northern Hemisphere, it flowers May to August.
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