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Pachysandra procumbens, the Allegheny pachysandra or Allegheny spurge, is a flowering plant in the family Buxaceae, native to the southeast United States from West Virginia and Kentucky south to Florida, and west to Louisiana. The name Allegheny is sometimes spelled Alleghany. It is an evergreen subshrub, growing to at most 30 cm high, usually ...
It has been adapted by and to other countries (such as Canada) in various forms. A plant may be described as "hardy to zone 10": this means that the plant can withstand a minimum temperature of 30 to 40 °F (−1.1 to 4.4 °C). Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale.
Hopkins' bioclimatic law states that in North America east of the Rockies, a 130-m (400-foot) increase in elevation, a 4° change in latitude North (444.48 km), or a 10° change in longitude East (two-thirds of a time zone) will cause a biological event to occur four days later in the spring or four days earlier in the fall. [1]
This page alphabetically lists some known plant species occurring in the US state of Pennsylvania. Currently about 2,100 native and 1,300 non-native plant species are known in Pennsylvania. [1] According Pennsylvania Department of Conservation and Natural Resources, the known species make up 37% of Pennsylvania's total wild plant flora.
Native plants in the U.S. are under threat from habitat loss, construction, overgrazing, wildfires, invasive species, bioprospecting — the search for plant and animal species from which ...
Kalmia latifolia, the mountain laurel, [3] calico-bush, [3] or spoonwood, [3] is a flowering plant and one of the 10 species in the genus of Kalmia belonging to the heath(er) family Ericaceae. It is native to the eastern United States. Its range stretches from southern Maine to northern Florida, and west to Indiana and Louisiana.
Phlox stolonifera (creeping phlox or moss phlox) is a species of flowering plant in the family Polemoniaceae. It is a perennial herbaceous plant that is native to the eastern United States. [ 1 ] It occurs in woodlands and stream banks [ 1 ] in the vicinity of the Appalachian Mountains from Pennsylvania south to northern Georgia .
A colony of Pennsylvania sedge in the Morton Arboretum. Pennsylvania sedge produces leaves up to 2 ft (0.6 m) long and 1 to 3 mm (0.04 to 0.12 in) wide that become arching at maturity. [5] It has culms (stems) 10 to 45 cm (4 to 18 in) long. [6] Pennsylvania sedge blooms early in the spring, from April to June.