Kingdom:
Phylum:
Angiosperms
Order:
Asterales
Family:
Genus:
Species:
barba-johannis
ID:
29023

Status:
valid

Authors:
(DC.) H.Rob. & Brettell

Source:
gcc

Year:
1974

Citation Micro:
Phytologia 27: 415 (1974)

WFO Identifier:
wfo-0000028352



Common Names

  • Roldana barba-johannis
  • Roldana
  • Barba-Johannis
  • Barba-Johannis


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Description

Roldana barba-johannis (also called Barbas-John's Roldana, among many other common names) is an annual herbaceous plant of the Asteraceae family. It has a single stem and yellow flowers. It is native to Mexico and is found in grasslands and open woodlands.

Uses & Benefits

Roldana barba-johannis is used as an ornamental plant in gardens and parks, and as a medicinal plant for treating skin diseases.

Flower, Seeds and Seedlings

Roldana barba-johannis has small yellow flowers with five petals. The seeds are small and black, and the seedlings have long, narrow leaves.

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Cultivation and Propagation

Roldana barba-johannis is a perennial herb that grows up to 1 meter in height. It is native to Mexico and is found in open grassland areas. It prefers a well-drained soil in a sunny or partly shaded position. Propagation is by seed or division. Sow the seed in spring or autumn in a sunny position in well-drained soil. Division can be done in spring or autumn.

Where to Find Roldana barba-johannis

Roldana barba-johannis is native to the Mexican states of Oaxaca, Chiapas, and Veracruz.

Roldana barba-johannis FAQ

What are the ideal growing conditions for Roldana barba-johannis?

Roldana barba-johannis prefers full sun to partial shade and well-drained soil. It is drought tolerant and can tolerate a variety of soil types.

What is the growth rate of Roldana barba-johannis?

Roldana barba-johannis is a fast-growing plant, with a growth rate of up to 6 inches per year.

What is the lifespan of Roldana barba-johannis?

Roldana barba-johannis is a short-lived perennial, with a lifespan of up to 5 years.

Species in the Roldana genus

Roldana cristobalensis, Roldana cordovensis, Roldana neogibsonii, Roldana hirsuticaulis, Roldana juxtlahuacana, Roldana tlacotepecana, Roldana schaffneri, Roldana ehrenbergiana, Roldana heteroidea, Roldana mezquitalana, Roldana mazatecana, Roldana barba-johannis, Roldana pennellii, Roldana subpeltata, Roldana gentryi, Roldana hartwegii, Roldana scandens, Roldana acutangula, Roldana robinsoniana, Roldana mixtecana, Roldana michoacana, Roldana anisophylla, Roldana oaxacana, Roldana tepopana, Roldana heteroideus, Roldana chapalensis, Roldana hintonii, Roldana langlassei, Roldana lanicaulis, Roldana floresiorum, Roldana mexicana, Roldana sartorii, Roldana angulifolia, Roldana heracleifolia, Roldana gonzaleziae, Roldana albonervia, Roldana greenmanii, Roldana eriophylla, Roldana lobata, Roldana guadalajarensis, Roldana metepecus, Roldana sundbergii, Roldana jurgensenii, Roldana petasioides, Roldana heterogama, Roldana platanifolia, Roldana reticulata, Roldana tonii, Roldana petasitis, Roldana galiciana,

Species in the Asteraceae family

Aaronsohnia pubescens, Aaronsohnia factorovskyi, Abrotanella filiformis, Abrotanella rostrata, Abrotanella linearis, Abrotanella trilobata, Abrotanella muscosa, Abrotanella inconspicua, Abrotanella trichoachaenia, Abrotanella caespitosa, Abrotanella nivigena, Abrotanella pusilla, Abrotanella linearifolia, Abrotanella papuana, Abrotanella rosulata, Abrotanella emarginata, Abrotanella fertilis, Abrotanella spathulata, Abrotanella purpurea, Abrotanella patearoa, Abrotanella submarginata, Abrotanella diemii, Abrotanella scapigera, Abrotanella forsterioides, Acamptopappus shockleyi, Acamptopappus sphaerocephalus, Acanthocephalus benthamianus, Acanthocephalus amplexifolius, Acanthocladium dockeri, Acanthodesmos distichus, Acanthodesmos gibarensis, Acanthospermum humile, Acanthospermum consobrinum, Acanthospermum glabratum, Acanthospermum microcarpum, Acanthospermum hispidum, Acanthospermum australe, Acanthospermum lecocarpoides, Acanthostyles buniifolius, Acanthostyles saucechicoensis, Achillea buiana, Achillea conrathii, Achillea cucullata, Achillea styriaca, Achillea clavennae, Achillea cappadocica, Achillea huber-morathii, Achillea ptarmicoides, Achillea sieheana, Achillea barrelieri,

References

The Plant List v1.1 record gcc-127405: Based on the initial data import
Harold E. Robinson (1932-2020): Based on occurrence of standard abbreviation 'H.Rob.' in the authors string.
Augustin Pyramus de Candolle (1778-1841): Based on occurrence of standard abbreviation 'DC.' in the authors string.
Robert D. Brettell (b.1934): Based on occurrence of standard abbreviation 'Brettell' in the authors string.