Rock Garden Plants
Houstonia purpurea L.  
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FamilyRUBIACEAE
Genus speciesHoustonia purpurea L. 
SynonymsHedyotis purpurea (L.) Torr. & A.Gray
 Houstonia angustifolia Pursh
 Houstonia macrosepala Nutt.
Habitatgrassland
Descriptionstems erect, leaves large, ovate, flowers in terminal or lateral panicles, flowers 1cm long
Size10-40cm
Colorlilac, red
Bloomsummer
Ca
Typesubshrub
Cultivationmesic, slightly humous, sunny site
alpine house, moist, rich, drained soil, sun
Propagationseed in spring, barely covered, germ. 1-3 months, 10-16°C
cuttings in late summer
Territory Northern America
     North-Central U.S.A. (Illinois , Missouri , Oklahoma )
     Northeastern U.S.A. (Indiana , Ohio , Pennsylvania , West Virginia )
     South-Central U.S.A. (Texas )
     Southeastern U.S.A. (Alabama , Arkansas , Delaware , Georgia , Kentucky , Louisiana , Maryland , Mississippi , North Carolina , South Carolina , Tennessee , Virginia)
BibliographyPlants of the World online powo.science.kew.org
International Plant Names Index www.ipni.org
Comments

RUBIACEAE

Houstonia purpurea L., Sp. Pl. 1: 105 (1753)

Synonyms:
Anotis purpurea (L.) G.Don
Chamisme pupurea (L.) Nieuwl.
Hedyotis purpurea (L.) Torr. & A.Gray
Knoxia purpurea (L.) Lam. ex Poir.
Oldenlandia purpurea (L.) A.Gray
=============================================================================
purpurea typica ined.

Synonyms:
Anotis ciliolosa G.Don
Anotis lanceolata DC.
Anotis longifolia G.Don
Dioidia frankii Steud. & Hochst. ex C.Presl, pro syn.
Hedyotis caroliniana Raeusch.
Hedyotis ciliolata Torr. ex Spreng.
Hedyotis frankii C.Presl
Hedyotis nigricans rigidiuscula (A.Gray) Shinners
Hedyotis purpurea albiflora (Standl.) Fosberg
Hedyotis purpurea leucantha (Standl.) Fosberg
Hedyotis purpurea pubescens (Britton) Fosberg
Hedyotis umbellata Walter
Houstonia angustifolia Pursh
Houstonia angustifolia rigidiuscula A.Gray
Houstonia lanceolata albiflora Standl.
Houstonia latifolia Willd. ex Roem. & Schult.
Houstonia pubescens Raf.
Houstonia purpurea pubescens Britton
Houstonia rigidiuscula (A.Gray) Wooton & Standl.
Houstonia rupestris Raf.
Houstonia tenuifolia leucantha Standl.
Houstonia umbellata Walp., pro syn.
Houstonia varians Michx.
Oldenlandia purpurea ciliolata (Torr. ex Spreng.) A.Gray
Spermacoce lanceolata Frank ex C.Presl

c. & e. USA
74 ILL MSO OKL 75 INI OHI PEN WVA 77 TEX 78 ALA ARK DEL GEO KTY LOU MRY MSI NCA SCA TEN VRG

purpurea calycosa A.Gray, Syn. Fl. N. Amer. 1(2): 26 (1884)

Synonyms:
Hedyotis calycosa Shuttlew. ex A.Gray
Hedyotis purpurea calycosa (A.Gray) Mohr
Houstonia calycosa (A.Gray) Mohr

Hedyotis lanceolata Poir.
Houstonia lanceolata (Poir.) Britton

nc. & e. USA
74 ILL MSO OKL 75 INI OHI VER 78 ALA TEN

purpurea montana (Small) Terrell, Rhodora 61: 169 (1959)

Basionym:
Houstonia montana Small, Fl. S.E. U.S. [Small] 1325, 1338 (1903)

Synonyms:
Hedyotis purpurea montana (Small) Fosberg

North Carolina, Tennessee
78 NCA TEN

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