Source:http://linkedlifedata.com/resource/umls/id/C0242724
MSH: Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed),CSP: major organ for photosynthesis; cools plant by transpiration; may be broad, needle shaped, or modified to form flowers or cones.,NCI: A special organ of plant in the form of lateral outgrowth from the stem. Leaves usually consist of a blade, or lamina, supported upon a leafstalk or petriole. Leaves may appear as part of the foliage, or as a cotyledon, a scale, a bract, a spine, or a tendril.