Ticket #5998 (new)
Opened 2 hours ago
Congratulations! You can get a $100 Lowes gift card!
Reported by: | "Lowes Shopper Gift Card Chance" <LowesShopperFeedback@…> | Owned by: | |
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Priority: | normal | Milestone: | 2.11 |
Component: | none | Version: | 3.8.0 |
Severity: | medium | Keywords: | |
Cc: | Language: | ||
Patch status: | Platform: |
Description
Congratulations! You can get a $100 Lowes gift card! http://coolable.co/kxprI0_AvW1n0fSF8EVd_rtC2qpGLduMb0mkeCWnjuC4ePHxPw http://coolable.co/LE1CcH_LQDPfdaD148jT75THff6lY0GB1MumzJO8bQhjwrvKQA mple, vascularized leaves (microphylls), such as those of the early Devonian lycopsid Baragwanathia, first evolved as enations, extensions of the stem. True leaves or euphylls of larger size and with more complex venation did not become widespread in other groups until the Devonian period, by which time the carbon dioxide concentration in the atmosphere had dropped significantly. This occurred independently in several separate lineages of vascular plants, in progymnosperms like Archaeopteris, in Sphenopsida, ferns and later in the gymnosperms and angiosperms. Euphylls are also referred to as macrophylls or megaphylls (large leaves). Morphology See also: Glossary of leaf morphology Leafstem of dog rose with petiole, stipules and leaflets Rosa canina: Petiole, two stipules, rachis, five leaflets Citrus leaves with translucent glands A structurally complete leaf of an angiosperm consists of a petiole (leaf stalk), a lamina (leaf blade), stipules (small structures located to either side of the base of the petiole) and a sheath. Not every species produces leaves with all of these structural components. The proximal stalk or petiole is called a stipe in ferns. The lamina is the expanded, flat component of the leaf which contains the chloroplasts. The sheath is a structure, typically at the base that fully or partially clasps the stem above the node, where the latter is attached. Leaf sheathes typically occur in grasses and Apiaceae (umbellifers). Between the sheath and the lamina, there may be a pseudopetiole, a petiole like structure. Pseudopetioles occur in some monocotyledons including bananas, palms and bamboos. Stipules may be conspicuous (e.g. beans and roses), soon falling or otherwise not obvious as in Moraceae or absent altogeth
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