• common and widely distributed tall timber pine of western North America having dark green needles in bunches of 2 to 5 and thick bark with dark brown plates when mature
• hairy perennial with yellow flower heads in branched clusters; found almost everywhere in dry places from Canada to west central and western United States; sometimes placed in genus Chrysopsis
• a progressive disease of connective tissue that is characterized by nodules along arteries; nodules may block the artery and result in inadequate circulation to the particular area
• greyish-green shrub of desert regions of southwestern United States and Mexico having sparse foliage and terminal spikes of bluish violet flowers; locally important as source of a light-colored honey of excellent flavor
• fragrant rounded shrub of southwestern United States and adjacent Mexico having brittle stems and small crowded blue-green leaves and yellow flowers; produces a resin used in incense and varnish and in folk medicine
• large semi-evergreen tree of the East Indies; trunk exudes a tenacious gum; bitter bark used as a tonic; seeds yield an aromatic oil; sometimes placed in genus Melia
• soft-haired sticky plant with heads of bright pink trumpet-shaped flowers; found in sandy desert soil; after ample rains may carpet miles of desert with pink from the southwestern United States to northern Mexico
• floating aquatic carnivorous perennial of central and southern Europe, Africa, Asia, Australia having whorls of 6 to 9 leaves ending in hinged lobes for capturing e.g. water fleas
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