Houstonia longifolia
| Longleaf bluet | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Genus: | Houstonia |
| Species: | H. longifolia |
| Binomial name | |
| Houstonia longifolia Gaertn. | |
| Synonyms[1] | |
| |
Houstonia longifolia, commonly known as long-leaved bluet or longleaf summer bluet, is a perennial plant in the family Rubiaceae.[2] It can be found throughout most of the Eastern United States and Canada. It has been reported from every state east of the Mississippi River except Delaware, plus North Dakota, Minnesota, Missouri, Arkansas and Oklahoma, with isolated populations in Kansas and Texas. Also, all Canadian provinces from Quebec to Alberta.[1][3] It prefers upland woods in poor, dry, often sandy, soil, blooming from June to August.[4]
Varieties
Two varieties are recognized:[1]
- Houstonia longifolia var. longifolia - From Georgia and Arkansas north to Canada
- Houstonia longifolia var. tenuifolia (Nutt.) Alph.Wood. - Florida, Georgia, Tennessee, Virginia
References
- 1 2 3 Kew World Checklist of Selected Plant Families
- ↑ Gaertner, Joseph. 1788 De Fructibus et Seminibus Plantarum: accedunt seminum centuriae quinque priores cum tabulis Aeneis LXXIX. Stutgardiae, Tubingae 1: 226
- ↑ Biota of North America Program
- ↑ {Gleason & Cronquist|title=Manual of Vascular Plants of Northeastern United States and Adjacent Canada|edition=second|year=1991}
External links
- USDA PLANTS Profile
- photo of herbarium specimen at Missouri Botanical Garden, isotype of Houstonia longifolia
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