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peristome
peristome (ˈpɛrɪstəʊm) Also in L. forms peˈristoma (pl. -ata), periˈstomium (pl. -ia). [= F. péristome (18..), ad. mod.L. peristoma (Hedwig 1782), f. Gr. περί around + στόµα mouth; altered (by Ehrhart 1787) to peristomium, after pericarpium, etc.] 1. Bot. The fringe of small teeth around the mouth o...
Oxford English Dictionary
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Nepenthes abgracilis
The inner margin of the peristome lacks conspicuous teeth. The lid–peristome junction has deeply sunken, unbordered glands around 0.25 mm in diameter.
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Nepenthes limiana
Additionally, the narrowly oblanceolate to almost linear laminae that are slightly decurrent and the proportionally wider and bulbous peristome of the flared and
crenellated on its lower pitchers characterize this species from the sessile and oblong laminae as well as the proportionally thinner peristome
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Nepenthes diabolica
It is characterised by an exceptionally developed peristome and conspicuous, woolly pitcher indumentum. Morphologically it is closest to N. hamata, the only other species from Sulawesi with a similarly elaborated peristome.
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Nepenthes jacquelineae
They bear a wide, flattened peristome (≤10 mm wide) which is contracted in the middle. The wide peristome may function as a kind of landing platform for such prey.
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Asperdaphne suluensis
It is yellowish-white but brownish behind the peristome. The protoconch is wanting. The peristome is moderately thin, undulated, with a shallow sinus just below the suture, angular at the entrance of the siphonal canal.
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Nepenthes putaiguneung
resembles in its morphology to N. singalana, however, it differs from the latter with its narrowly spatulate leaves, the upper pitchers with finely lobed peristome This species also resembles N. mikei but differs by the shape of the leaves, the shape of the lower pitchers, the short, dense ribs on the peristome of
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دردوري
وفيه يقتصر وجود الأهداب على منطقة الحولفم peristome، والتي يكون اتجاهها مع عكس اتجاه عقارب الساعة. وللناقوس حافة سميكة وبوسط السطح العلوي قرص يعرف باسم المنطقة الحولفمية Peristome.
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Drymaeus cecileae
The peristome is thin, expanded, buff or white, not continuous.
The width of the shell is 7–10 mm. The height of the shell is 17–22 mm. He regarded this taxon as a colour form of Drymaeus strigatus, which, however, has always a lilac band on the inside, bordering the peristome.
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Brachytoma rufolineata
The peristome is rather thin, with a very shallow sinus near the siphonal canal, which is short and broad. The interior of the aperture is light purplish, nearly white near the peristome.
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Horaiclavus madurensis
The peristome is thin, slightly curved. The columellar margin is tubercled above, then regularly concave and conspicuously enamelled. The interior of the aperture shows a white layer of enamel near peristome and 3 brown blotches at its margin, corresponding to the external bands.
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Vosmaeropsis macera
Vents of the individuals respectively terminal, circular, and each provided with a peristome, leading into a general cloacal cavity, which is narrow and Spicules of two kinds, viz. acerate and triradiate ; no quadriradiates : — 1, acerates, of three forms, viz. that usually composing the peristome, among
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Geastrum jurei
(an opening on top of the spore sac) and G. fornicatum has a peristome the same color as the endoperidium. The peristome is indefinite, but due to its color it is well-distinguished from the endoperidium.
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Buxbaumia
The unusual peristome in Buxbaumia is now thought to be a transitional form between the nematodontous (cellular teeth) peristome of the Polytrichopsida and the arthrodontous (cell wall teeth) peristome of the Bryopsida.
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Crassispira rubidofusca
There are about 15 ribs on the body whorl, of which the ventral ones are obsolete, that behind the peristome are very strong and varix-like. The aperture is oblong, narrow, with a thin peristome, protracted about the middle, with a deep, rather wide sinus above .
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