houstonia

n.

茜草科小植物（北美产，开蓝、白或紫色花）；

Revision of Houstonia (Rubiaceae-Hedyotideae)
Relationships of Hedyotis fruticosa L. to Houstonia L. and Oldenlandia L
TAXONOMIC REVIEW OF HOUSTONIA ACEROSA AND H. PALMERI, WITH NOTES ON HEDYOTIS AND OLDENLANDIA (RUBIACEAE)
Factors determining fruit set in heterostylous bluets, Houstonia caerulea (Rubiaceae).
Speciation and hybridization among Houstonia (Rubiaceae) species: the influence of polyploidy on reticulate evolution
Molecular phylogenetics of Houstonia (Rubiaceae): descending aneuploidy and breeding system evolution in the radiation of the lineag...
Overview and annotated list of North American species of Hedyotis, Houstonia, Oldenlandia (Rubiaceae), and related genera.
Ecogeographic isolation: a reproductive barrier between species and between cytotypes in Houstonia (Rubiaceae)
PHYLOGENETIC IMPLICATIONS OF DIVERSE SEED TYPES, CHROMOSOME NUMBERS, AND POLLEN MORPHOLOGY IN HOUSTONIA (RUBIACEAE)
Overview and annotated list of North American species of Hedyotis, Houstonia, Oldenlandia (Rubiaceae), a...