How To Use Pinnule In A Sentence
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The food is transferred down the arms to the mouth by tube feet located on the pinnules and arms.
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Pinnules lanceolate, strongly decurrent so that the pinnæ are merely pinnatifid.
The Fern Lover's Companion A Guide for the Northeastern States and Canada
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Fertile fronds have clusters of elongate sporangia that partially replace pinnules.
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Fertile fronds have clusters of elongate sporangia that partially replace pinnules.
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An unusually large and rare form with triangular, lanceolate, and pinnatifid pinnules, having blunt, oblong segments.
The Fern Lover's Companion A Guide for the Northeastern States and Canada
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Their relative inedibility and dense network of arms and pinnules makes crinoids attractive to commensals - organisms which benefit from close association with a host - and other small animals that wish to hide from predators.
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In the east it is often dwarfed -- six to ten inches high, growing in tufts with stout rootstocks, having the pinnules finely toothed instead of rounded and the indusia often lunate, rarely twice as long as broad.
The Fern Lover's Companion A Guide for the Northeastern States and Canada
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Fishelson and Nichols observed fish targeting organisms sheltering in the arms and pinnules of living crinoids.
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If the primary pinnae are divided, then the individual divisions are known as pinnules.
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Predators mistaking the pinnule tips for the tegmen could take bites out of the distal parts of the pinnules.
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Pinnæ sub-opposite, divergent, narrowly oblong, obtuse; base truncate, cordate or clasping, occasionally auricled; lower pinnæ often with orbicular or cordate pinnules.
The Fern Lover's Companion A Guide for the Northeastern States and Canada
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Lepidopteris is a bipinnate frond whose pinnules resemble some species of Alethopteris.
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Fronds twice pinnate with the lower pinnules pinnatifid
The Fern Lover's Companion A Guide for the Northeastern States and Canada
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The food is transferred down the arms to the mouth by tube feet located on the pinnules and arms.
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Sori borne along the longitudinal veins and the reflexed edges of the ultimate segments of pinnules.
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Recent crinoids are passive suspension feeders on microscopic plant and animal plankton and organic detritus by means of the tubefeet of the water vascular system in their arms and pinnules.
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Many of the specimens are strongly falcate and appear to be pinnules rather than leaves; they often have longitudinal wrinkles that appear to result from compression of a thick lamina.
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The tube feet, arranged in groups of three on the pinnules, are coated with mucus that ensnares the prey.
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They are commonly referred to as the Lip Ferns because the sori are borne at the margins of the pinnules and the leaf margins themselves are often reflexed to form false indusia that protect the sori.
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Fronds pale green, one to six feet high; sterile part bipinnate, each pinna having numerous pairs of lance-oblong, serrulate pinnules alternate along the midrib.
The Fern Lover's Companion A Guide for the Northeastern States and Canada
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The most common elements are parallel-veined leaves that resemble cordaites but that could be isolated pinnules of a pinnate leaf.
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They are commonly referred to as the Lip Ferns because the sori are borne at the margins of the pinnules and the leaf margins themselves are often reflexed to form false indusia that protect the sori.
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It should have required less energy for the crinoid to regenerate the damaged pinnules than to regenerate a lost or damaged tegmen containing part of the gut tract.
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If the primary pinnae are divided, then the individual divisions are known as pinnules.
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Pinnules toothed or entire nearly covered beneath with the large, thin, imbricated indusia which are orbicular with a narrow sinus, having the margins ragged and sparingly glanduliferous.
The Fern Lover's Companion A Guide for the Northeastern States and Canada
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Lepidoteris fronds typically have so-called intercalary pinnules along the rachis between the primary pinnae, and are covered with the characteristic blisters mentioned above.
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Recent crinoids are passive suspension feeders on microscopic plant and animal plankton and organic detritus by means of the tubefeet of the water vascular system in their arms and pinnules.
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The branchia is translucent white with brown spots and white-tipped brown pinnules.