Biology:Rauhia

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Rauhia is a genus of bulbous,[1] perennial plants[2] in the family Amaryllidaceae endemic to Peru.[3][4][5][6]

Description

Rauhia multiflora bulb with scale bar (10 cm)

Vegetative characteristics

Rauhia are bulbous,[1] perennial plants[2] with annual,[7] ovate to oblong, fleshy, petiolate, glaucous leaves[8] and large,[7] solitary, tunicate, underground bulbs.[2]

Generative characteristics

The stout,[8] umbellate inflorescences with erect, solid scapes[2] bear numerous pedicellate, infundibular to tubular,[8] actinomorphic or zygomorphic,[7][9] green[8] to white flowers.[2] The seeds are black or brown.[1][7]

Cytology

The diploid chromosome count is 2n = 46.[7]

Taxonomy

It was published by Hamilton Paul Traub in 1957 with Rauhia peruviana Traub as the type species.[10]

Species

As of June 2023, Plants of the World Online accepted the following species:[3]

  • Rauhia albescens Meerow & Sagást.
  • Rauhia decora Ravenna - Peru (Amazonas)
  • Rauhia multiflora (Kunth) Ravenna - Peru (Cajamarca)
  • Rauhia occidentalis Ravenna - Peru (Cajamarca)
  • Rauhia staminosa Ravenna - Peru (Amazonas)

Etymology

The generic name Rauhia refers to the German botanist Werner Rauh (1913-2000).[8][2]

Ecology

It occurs on rocky slopes, and in open, seasonally dry woodlands at elevations of 1000–1500 m.[1][7]

Cultivation

Rauhia multiflora is found in cultivation.[2] Rauhia has been successfully used in intergeneric hybridisation with Eucrosia.[11]

References

  1. ↑ 1.0 1.1 1.2 1.3 Rauhia. (n.d.). Pacific Bulb Society. Retrieved January 6, 2025, from https://www.pacificbulbsociety.org/pbswiki/index.php/Rauhia
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Arroyo-Leuenberger, S. (2020). Rauhia AMARYLLIDACEAE. In: Eggli, U., Nyffeler, R. (eds) Monocotyledons. Illustrated Handbook of Succulent Plants. Springer, Berlin, Heidelberg.
  3. ↑ 3.0 3.1 "Rauhia Traub" (in en). Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org/taxon/295612-2. 
  4. ↑ Hamilton Paul Traub. 1957. Plant Life 13: 74.
  5. ↑ Brako, L. & J. L. Zarucchi. (eds.) 1993. Catalogue of the Flowering Plants and Gymnosperms of Peru. Monographs in systematic botany from the Missouri Botanical Garden 45: i–xl, 1–1286
  6. ↑ León, B., J. Roque, C. Ulloa Ulloa, N. C. A. Pitman, P. M. Jørgensen & A. Cano E. 2006 [2007]. El Libro Rojo de las Plantas Endémicas del Perú. Revista Peruana de Biologia 13(núm. 2 especial): 1s–971s
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Meerow, A.W., Snijman, D.A. (1998). Amaryllidaceae. In: Kubitzki, K. (eds) Flowering Plants · Monocotyledons. The Families and Genera of Vascular Plants, vol 3. Springer, Berlin, Heidelberg.
  8. ↑ 8.0 8.1 8.2 8.3 8.4 Leuenberger, B. E., & Arroyo-Leuenberger, S. (2006). Humboldt, Bonpland, Kunth and the type specimen of Rauhia multiflora (Amaryllidaceae) from Peru. Willdenowia, 601-610.
  9. ↑ Byng, J. W. (2014). The Flowering Plants Handbook: A practical guide to families and genera of the world. p. 88. Vereinigtes Königreich: Plant Gateway Ltd..
  10. ↑ Missouri Botanical Garden. (n.d.-x). Rauhia Traub. Tropicos. Retrieved January 6, 2025, from https://www.tropicos.org/name/40022909
  11. ↑ Meerow, A. W., Roh, M., & Lawson, R. S. (1992, May). Breeding of Eucrosia (Amaryllidaceae) for cutflower and pot plant production. In VI International Symposium on Flower Bulbs 325 (pp. 555-560).

Wikidata ☰ Q3930517 entry



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