Camassia: A plant genus of the family LILIACEAE that contains steroidal SAPONINS and should not be confused with Death Camas (ZIGADENUS).Scilla: A plant genus of the family LILIACEAE. Members contain the cardiotonic PROSCILLARIDIN. The common name of squill is also used for URGINEA.Agave: A genus known for fibers obtained from their leaves: sisal from A. sisalana, henequen from A. fourcroyoides and A. cantala, or Manila-Maguey fiber from A. cantala. Some species provide a sap that is fermented to an intoxicating drink, called pulque in Mexico. Some contain agavesides.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Plastids: Self-replicating cytoplasmic organelles of plant and algal cells that contain pigments and may synthesize and accumulate various substances. PLASTID GENOMES are used in phylogenetic studies.Agavaceae: A plant family of the order Liliales, subclass Liliidae, class Liliopsida. Members of the family have narrow, lance-shaped, sometimes fleshy or toothed leaves that are clustered at the base of each plant. Most species have large flower clusters containing many flowers. The fruit is a capsule or berry.Yucca: A genus (and common name) in the AGAVACEAE family. It is known for SAPONINS in the root that are used in SOAPS.Zigadenus: A plant genus of the family LILIACEAE that is fatally toxic to grazing animals. The name is similar to another plant called Camas (CAMASSIA).Puerto Rico: An island in the Greater Antilles in the West Indies. Its capital is San Juan. It is a self-governing commonwealth in union with the United States. It was discovered by Columbus in 1493 but no colonization was attempted until 1508. It belonged to Spain until ceded to the United States in 1898. It became a commonwealth with autonomy in internal affairs in 1952. Columbus named the island San Juan for St. John's Day, the Monday he arrived, and the bay Puerto Rico, rich harbor. The island became Puerto Rico officially in 1932. (From Webster's New Geographical Dictionary, 1988, p987 & Room, Brewer's Dictionary of Names, 1992, p436)Delphinium: A plant genus of the family RANUNCULACEAE. Members contain ACONITINE and other diterpenoid alkaloids.NevadaVerbena: A plant genus of the family VERBENACEAE. Members contain verbenachalcone (dimeric dihydrochalcone), iridoids, and phenylethanoids.Northwestern United States: The geographic area of the northwestern region of the United States. The states usually included in this region are Idaho, Montana, Oregon, Washington, and Wyoming.Colocasia: A plant genus of the family ARACEAE. Members contain acrid calcium oxalate and LECTINS. Polynesians prepare the root into poi. Common names of Taro and Coco Yam (Cocoyam) may be confused with other ARACEAE; XANTHOSOMA; or with common yam (DIOSCOREA).Coreopsis: A plant genus of the family ASTERACEAE that contains phenyl propanoids.Comfrey: Perennial herb Symphytum officinale, in the family Boraginaceae, used topically for wound healing. It contains ALLANTOIN, carotene, essential oils (OILS, VOLATILE); GLYCOSIDES; mucilage, resin, SAPONINS; TANNINS; triterpenoids, VITAMIN B12, and ZINC. Comfrey also contains PYRROLIZIDINE ALKALOIDS and is hepatotoxic if ingested.Chamomile: Common name for several daisy-like plants (MATRICARIA; TRIPLEUROSPERMUM; ANTHEMIS; CHAMAEMELUM) native to Europe and Western Asia, now naturalized in the United States and Australia.Crocus: A plant genus, in the IRIDACEAE family, known as a source of Saffron.Stellaria: A plant genus of the family CARYOPHYLLACEAE.Nepeta: A genus of the LAMIACEAE family. It is known for its mild calming effect and for the way cats are attracted to the aroma.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Dracaena: A plant genus of the family LILIACEAE. The common name of "dragon's blood" is also used for CROTON and Daemonorops (ARECACEAE).Stevens-Johnson Syndrome: Rare cutaneous eruption characterized by extensive KERATINOCYTE apoptosis resulting in skin detachment with mucosal involvement. It is often provoked by the use of drugs (e.g., antibiotics and anticonvulsants) or associated with PNEUMONIA, MYCOPLASMA. It is considered a continuum of Toxic Epidermal Necrolysis.Pedigree: The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition.Ferns: Seedless nonflowering plants of the class Filicinae. They reproduce by spores that appear as dots on the underside of feathery fronds. In earlier classifications the Pteridophyta included the club mosses, horsetails, ferns, and various fossil groups. In more recent classifications, pteridophytes and spermatophytes (seed-bearing plants) are classified in the Subkingdom Tracheobionta (also known as Tracheophyta).Food Coloring Agents: Natural or synthetic dyes used as coloring agents in processed foods.Plants, Genetically Modified: PLANTS, or their progeny, whose GENOME has been altered by GENETIC ENGINEERING.Heliotropium: A plant genus in the family Boraginaceae, order Lamiales, subclass Asteridae. This is the True Heliotrope that should not be confused with an unrelated plant sometimes called Garden Heliotrope (VALERIAN).Plant Leaves: 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)Plant Proteins: Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which VEGETABLE PROTEINS is available.Introduced Species: Non-native organisms brought into a region, habitat, or ECOSYSTEM by human activity.Sheltered Workshops: Protective places of employment for disabled persons which provide training and employment on a temporary or permanent basis.AustriaCongresses as Topic: Conferences, conventions or formal meetings usually attended by delegates representing a special field of interest.Informatics: The field of information science concerned with the analysis and dissemination of data through the application of computers.Self-Help Devices: Devices, not affixed to the body, designed to help persons having musculoskeletal or neuromuscular disabilities to perform activities involving movement.Dental Care for Disabled: Dental care for the emotionally, mentally, or physically disabled patient. It does not include dental care for the chronically ill ( = DENTAL CARE FOR CHRONICALLY ILL).International Cooperation: The interaction of persons or groups of persons representing various nations in the pursuit of a common goal or interest.Tropical Climate: A climate which is typical of equatorial and tropical regions, i.e., one with continually high temperatures with considerable precipitation, at least during part of the year. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Ethnobotany: The study of plant lore and agricultural customs of a people. In the fields of ETHNOMEDICINE and ETHNOPHARMACOLOGY, the emphasis is on traditional medicine and the existence and medicinal uses of PLANTS and PLANT EXTRACTS and their constituents, both historically and in modern times.Search Engine: Software used to locate data or information stored in machine-readable form locally or at a distance such as an INTERNET site.Information Storage and Retrieval: Organized activities related to the storage, location, search, and retrieval of information.Seasons: Divisions of the year according to some regularly recurrent phenomena usually astronomical or climatic. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Beauty: Characteristics or attributes of persons or things which elicit pleasurable feelings.Beauty CultureFlowers: The reproductive organs of plants.Transposases: Enzymes that recombine DNA segments by a process which involves the formation of a synapse between two DNA helices, the cleavage of single strands from each DNA helix and the ligation of a DNA strand from one DNA helix to the other. The resulting DNA structure is called a Holliday junction which can be resolved by DNA REPLICATION or by HOLLIDAY JUNCTION RESOLVASES.Temperature: The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.Famous PersonsHerbicide Resistance: Diminished or failed response of PLANTS to HERBICIDES.Plant Diseases: Diseases of plants.Microbial Sensitivity Tests: Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses).Anti-Bacterial Agents: Substances that reduce the growth or reproduction of BACTERIA.