Information om | Engelska ordet LIGULE

Exempel på hur man kan använda LIGULE i en mening

• This family is distinguished from Lycopodiaceae (the clubmosses) by having scale-leaves bearing a ligule and by having spores of two types.
• The ligule is extremely short and square-ended, making a contrast with annual meadowgrass (Poa annua) and rough meadowgrass (Poa trivialis) in which it is silvery and pointed.
• The leaves are narrow, folded or flat, sometimes bristled, and with the basal sheath flattened or sometimes thickened, with a blunt or hooded apex and membranaceous ligule.
• The ligule appears to be a continuation of the leaf sheath and encircles or clasps the stem as does the leaf sheath.
• They have a number of unusual and/or "primitive" features, such as rudimentary leaves (microphylls), ubiquitous dichotomous branching, heterospory, and the ligule.
• What look like single flowers are actually a cluster of florets, each petal or ligule being a flower, or floret, possessing its own stamen and capable of producing the specialized seed of the family Asteraceae, the parachute-like achene.
• The ligule on Selaginella species can be found rising on the adaxil surfaces of leaves at their base, as well as on sporophylls.
• The main difference from other narrow-leaved pondweeds is that the stipule joins the leaf base, when it is pulled the sheath and stipule comes away, similar to a grass sheath and ligule.
• The species' leaf-sheaths are scabrous, tubular, keeled and are closed on one end with its ligule having eciliate membrane.
• Sheaths papillose - pilose in their majority, ligule 4–6 mm long, blades linear, 20–50 cm long and 10–20 mm wide.
• The dorsal ligule is very small, papilliform and bears a cirrus, which is much longer, extending somewhat beyond the extremity of the notopodial lobe, that is large, obtusely conical.
• The flowers are white, with 5-10 female ray florets, ligulate, with a pubescent tube, the ligule is elliptical and tridentate, the style is bifid and glabrous, the ovary is triquetral, uniaristate and without a fin; with about 20 disk florets, hermaphroditic, with hairy tubulous corolla, slightly pentadentate, the teeth are oblong; anthers blackish with a mutic base.

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