Of plant duration, a plant whose life span ends within one year after germination, e.g. a winter annual germinating in the autumn and flowering in the spring (esp. in Mediterranean climates), approximately synonymous to therophyte, c.f. biennial, ephemeral, perennial, c.f. also of flowering with respect to architecture, hapaxanthic, monocarpic, pleonanthic.
Vascular plant without significant woody tissue above or at the ground. Forbs and herbs may be annual, biennial, or perennial but always lack significant thickening by secondary woody growth and have perennating buds borne at or below the ground surface. In the PLANTS Database (http://plants.usda.gov/), graminoids are excluded but ferns, horsetails, lycopods, and whisk-ferns are included.
The general growth form of a plant - its size and branching - also its woodiness. Some plants have different growth habits depending on environment or location, so a plant can have more than one value.
Five indicator statuses, or ratings, are used in the United States National Wetland Plant List to designate a plant species’ preference for occurrence in a wetland or upland: Upland (UPL), Facultative Upland (FACU), Facultative (FAC), Facultative Wetland (FACW), and Obligate Wetland (OBL). The statuses represent the estimated probability of a species occurring in wetlands versus nonwetlands in a region.