How To Use Pinnule In A Sentence
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Sori borne along the longitudinal veins and the reflexed edges of the ultimate segments of pinnules.
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The branchia is translucent white with brown spots and white-tipped brown 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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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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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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If the primary pinnae are divided, then the individual divisions are known as pinnules.
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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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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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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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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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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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The tube feet, arranged in groups of three on the pinnules, are coated with mucus that ensnares the prey.
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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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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 food is transferred down the arms to the mouth by tube feet located on the pinnules and arms.
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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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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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Lepidopteris is a bipinnate frond whose pinnules resemble some species of Alethopteris.
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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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Predators mistaking the pinnule tips for the tegmen could take bites out of the distal parts of the pinnules.
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If the primary pinnae are divided, then the individual divisions are known as pinnules.
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Fishelson and Nichols observed fish targeting organisms sheltering in the arms and pinnules of living crinoids.
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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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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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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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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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Pinnules lanceolate, strongly decurrent so that the pinnæ are merely pinnatifid.
The Fern Lover's Companion A Guide for the Northeastern States and Canada
