Houstonia caerulea L.

Azure bluet (en)

Species

Angiosperms > Gentianales > Rubiaceae > Houstonia

Characteristics

A herb. The leaves are small and opposite. At the base they are in a ring. The stems are 20 cm tall and with one flower per stalk. The flowers have 4 pale blue petals and a yellow centre. The flowers are about 1 cm across
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a temperate plant. It grows in grassy areas. It is best in moist acidic soils in shady areas. It suits hardiness zone 4.
Light 4-9
Soil humidity 1-6
Soil texture 1-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-7

Usage

Uses environmental use medicinal wood
Edible flowers leaves
Therapeutic use Urinary Aid (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Houstonia caerulea habit picture by jimseng jimseng (cc-by-sa)
Houstonia caerulea habit picture by Yves SPM (cc-by-sa)

Leaf

Houstonia caerulea leaf picture by Eric Rebsamen (cc-by-sa)
Houstonia caerulea leaf picture by Justin Welch (cc-by-sa)

Flower

Houstonia caerulea flower picture by Michelle W (cc-by-sa)
Houstonia caerulea flower picture by David Hill (cc-by-sa)
Houstonia caerulea flower picture by Bill Glick (cc-by-sa)

Distribution

Houstonia caerulea world distribution map, present in Åland Islands, Canada, France, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:278288-2
WFO ID wfo-0000215160
COL ID 3MR3P
BDTFX ID -
INPN ID 762043
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Anotis gentianoides Houstonia pusilla Houstonia faxonorum Houstonia grandiflora Houstonia serpyllifolia Anotis coerulea Poiretia erecta Hedyotis caerulea f. albiflora Hedyotis gentianoides Houstonia caerulea f. albiflora Hedyotis caerulea f. benkei Hedyotis brachiata Houstonia linnaei Oldenlandia caerulea Houstonia caerulea f. caerulea Houstonia linnaei var. elatior Hedyotis caerulea var. faxonorum Houstonia caerulea var. elatior Houstonia caerulea var. faxonorum Houstonia caerulea var. piersii Houstonia caerulea var. toxonorum Hedyotis caerulea Houstonia caerulea var. caerulea Houstonia caerulea