It also looks similar to the Florida bluet which is orange in color. It is commonly known as the slender bluet. The orange bluet has a long flight season. The populations of the tule bluet are widespeard, abundant, and secure. Orange bluet females will posture their unwillingness to mate. This is how this bluet gets its common name. De Mortimer's tenant was another Norman, Ralph Bluet. Houstonia (bluet) is a genus of plants in the family Rubiaceae. On the male slender bluet his abdominal segments 8 and 9 are blue. He was a younger son of Richard Bluet, of Holcombe Rogus in Devon. The slender bluet has many species that are similar to it. One of the similar species is the skimming Bluet which is found in similar habitats. The tule bluet is found almost always where there are extensive stands of tules. Coenagrion hastulatum, the northern damselfly or spearhead bluet, is a damselfly in the family Coenagrionidae. The orange bluet ("Enallagma signatum") is a species of damselfly in the family Coenagrionidae.