Iris

Yellow flag iris Iris pseudacorus, copyright James St. John.

Belongs within: Iridaceae.

Iris is a genus of monocotyledons found primarily in northern temperate regions, bearing showy flowers with petal-like style branches (Hickman 1993).

Characters (from Hickman 1993): Perennial; rhizome creeping or more or less tuber-like. Inflorescence with flowers 1-many. Flowers with perianth parts clawed, sepals (wider, spreading or reflexed) unlike petals (generally narrower, erect); style branches more or less petal-like, arching over stamens, each with flat, scale-like stigma on surface facing stamen, just below generally 2-lobed tip (crest). Seeds compressed, pitted.

<==Iris [Irideae]
    |--I. sect. Californicae H93
    |    |--I. bracteata H93
    |    |--I. chrysophylla H93
    |    |--I. douglasiana [incl. I. douglasiana var. altissima, I. douglasiana var. oregonensis] H93
    |    |--I. fernaldii H93
    |    |--I. hartwegii H93
    |    |    |--I. h. ssp. hartwegii H93
    |    |    |--I. h. ssp. australis H93
    |    |    |--I. h. ssp. columbiana H93
    |    |    `--I. h. ssp. pinetorum H93
    |    |--I. innominata H93
    |    |--I. macrosiphon H93
    |    |--I. munzii H93
    |    |--I. purdyi H93
    |    |--I. tenax H93
    |    |    |--I. t. ssp. tenax H93
    |    |    `--I. t. ssp. klamathensis H93
    |    `--I. tenuissima H93
    |         |--I. t. ssp. tenuissima H93
    |         `--I. t. ssp. purdyiformis H93
    `--I. sect. Longipetalae H93
         |--I. longipetala H93
         |--I. missouriensis H93
         `--I. pseudacorus Linnaeus 1753 H93, HE80

Iris incertae sedis:
  I. cristata V72
  I. decora O88
  I. florentina BW64
  I. foetidissima Linnaeus 1753 HE80
  I. fulva D51
  I. germanica Linnaeus 1753 HE80
  I. goniocarpa O88
  I. hexagona L03
    |--I. h. var. hexagona D51
    `--I. h. var. gigantocaerulea D51
  I. kemaonensis O88
  I. lacustris V72
  I. laevigata HE80
  I. monnieri HE80
  I. × monspur [I. monnieri × I. spuria] CA26
  I. orientalis Miller 1768 HE80
  I. pumila V72
  I. × robusta [I. versicolor × I. virginica] V72
  I. ruthenica H09
  I. setosa D37
    |--I. s. var. setosa D37
    `--I. s. var. interior D37
  I. sibirica JK80
  I. spuria Linnaeus 1753 HE80
  I. susiana HE80
  I. tectorum BW64
  I. tuberosa C55
  I. versicolor D37
  I. virginica D37
    |--I. v. var. versicolor V72
    `--I. v. var. shrevei V72
  I. xiphioides C55

*Type species of generic name indicated

REFERENCES

[BW64] Booth, C., & J. M. Waterston. 1964. Fusarium redolens. C.M.I. Descriptions of Pathogenic Fungi and Bacteria 27.

[C55] Candolle, A. de. 1855. Géographie Botanique Raisonée: Ou exposition des faits principaux et des lois concernant la distribution géographique des plantes de l’époque actuelle vol. 2. Librairie de Victor Masson: Paris.

[CA26] Cockayne, L., & H. H. Allan. 1926. The present taxonomic status of the New Zealand species of Hebe. Transactions and Proceedings of the New Zealand Institute 57: 11–47.

[D37] Dobzhansky, T. 1937. Genetics and the Origin of Species. Columbia University Press: New York.

[D51] Dobzhansky, T. 1951. Genetics and the Origin of Species 3^rd ed. Columbia University Press: New York.

[HE80] Healy, A. J., & E. Edgar. 1980. Flora of New Zealand vol. 3. Adventive cyperaceous, petalous and spathaceous monocotyledons. P. D. Hasselberg, Government Printer: Wellington (New Zealand).

[H09] Heltmann, H. 2009. Der Königstein (Piatra Craiului), die Perle der Burzenländer Gebirge. Mauritiana 20 (3): 515–527.

[H93] Hickman, J. C. (ed.) 1993. The Jepson Manual: Higher Plants of California. University of California Press: Berkeley (California).

[JK80] John, J., & K.-P. Kolbe. 1980. The systematic position of the “Theales” from the viewpoint of serology. Biochemical Systematics and Ecology 8: 241–248.

[L03] Leschen, R. A. B. 2003. Erotylidae (Insecta: Coleoptera: Cucujoidea): phylogeny and review. Fauna of New Zealand 47: 1–108.

[O88] Ohba, H. 1988. The alpine flora of the Nepal Himalayas: an introductory note. In: Ohba, H., & S. B. Malla (eds) The Himalayan Plants vol. 1. The University Museum, University of Tokyo, Bulletin 31: 19–46.

[V72] Voss, E. G. 1972. Michigan Flora. Part I. Gymnosperms and Monocots. Cranbrook Institute of Science and University of Michigan Herbarium.