Details Title: BOTANY 400 Description: systematics terminology Total Flash Cards: 60 Created: 09/11/2005 14:42:47		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Plant Sciences Flashcards
Cards in this set: Term receptacle Definition floral axis, modified stem holding the flower, off of which come the four whorls. can become elongated and cup-like in some species. Term pedicel/peduncle Definition floral stalk- stem holding flower Term perianth Definition outer structure, protects sexual parts of plant. composed of two whorls: sepals and petals. can also be composed of tepals. Term sepal Definition lowermost whorl; covers unopened flower/protects petals. aka: calyx Term petal Definition second whorl; attracts pollinating agents (decorative function?); not always present in wind-pollinated species. aka: corolla Term androecium Definition all of a flower's stamen Term stamen Definition "male"; sexual. composed of anther and filament. Term anther Definition part of stamen; sac-like appendage at end of stamen that produces pollen Term filament Definition part of stamen; tube-like appendage for pollen transport up the stamen Term inflorescence Definition cluster of flowers Term syncarpic Definition many carpels fuse to form one pistil; number of carpels usually signified by number of stigmatic lobes Term apocarpic Definition # of pistils = # of carpels. can have many pistils. ex: 3 pistils = 3 carpels. MARSH MARIGOLD Term monocarpic Definition one carpel = one pistil Term marginal placentation Definition ovules connect to ovary wall in one spot. all apocarpic plants. Term Juniperus (juniper, red cedar) Definition two types of leaves: scale or needle. blue berry-like cones. Term Thuja (white cedar, arborvitae) Definition branchlets flattened, scale-like Term Picea (spruce) Definition alternate, four sided rigid leaves Term Pinus (pine) Definition leaves in clusters of 2-5. long and thin. Term Tsuga (hemlock) Definition leaves flattened, soft, and of two types; spreading lateral and small appresed (pointing out of stem) Term Taxus (yew) Definition leaves flattened, needle-like, deccurent (extend down stem, stem looks green) Term Larix (larch, tamarack) Definition leaves in clusters of 10+, small cones Term Abies (fir) Definition leaves alternate/spiral giving branch a tube-like shape, short needles. Term raceme Definition indeterminate INFL., alternate arrangement Term spike Definition indeterminate INFL., sessile raceme Term umbel Definition indeterminate INFL., flat-top arrangement Term panicle Definition indeterminate INFL., compounded raceme Term head Definition indeterminate INFL., stem head flattens out, becomes base for INFL., arranged in line Term dichasium Definition determinate INFL., palmately branched Term cyme Definition determinate INFL., compounded dichasium Term monochasium Definition determinate INFL., only one branching Term scirpoid Definition determinate INFL., compounded monochasium Term simple fruit Definition formed from one pistil Term dehiscent Definition dry fruits; open at maturity to shed seeds Term follicle Definition dry, dehiscent fruit from one carpel that splits along one line only. MARSH MARIGOLD. Term capsule Definition dry, dehiscent fruit from many carpels Term indehiscent Definition dry fruits that don't open at maturity Term achene Definition one seeded indehiscent fruit, seed attatches to fruit wall at a single point Term nut Definition indehiscent fruit with hardened walls Term aggregate fruit Definition developed from many pistils on the same flower Term multiple fruit Definition developed from many pistils, sometimes other parts, from many flowers Term axile placentation Definition ovary walls sectioned, ovules attatched to center, not walls Term parietal placentation Definition ovules attached to walls Term free central placentation Definition ovules attatched to center, not walls. no segmentation of ovary. Term basal placentation Definition ovules attach to ovary at base