D I S C O V E R    L I F E   
Bee Hunt! Odonata Lepidoptera 
  HomeAll Living ThingsIDnature guidesGlobal mapperAlbumsLabelsSearch
  AboutNewsEventsResearchEducationProjectsStudy sitesHelp


Iris douglasiana Herbert
DOUGLAS IRIS
Mountain Iris

Life   Plantae   Monocotyledoneae   Iridaceae   Iris

Iris douglasiana
© Copyright Gary Perlmutter 2010 · -9
Iris douglasiana

Click on map for details about points.

IDnature guide

Links

Associates · map
FamilyScientific name @ source (records)
Pucciniaceae  Puccinia iridis @ BPI (21)

go to Discover Life's Facebook group

Following modified from Plants Database, United States Department of Agriculture
   Top | See original

http://plants.usda.gov/java/profile?symbol=IRDO ---> https://plants.usda.gov/java/profile?symbol=IRDO
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://plants.usda.gov/java/profile?symbol=IRDO

Following modified from Flora of North America
   Top | See original

Link to Flora of North America home
 
All Floras       Advanced Search
FNA Vol. 26 Page 374, 381, 382, 384 , 385, 386, 387 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 26 | Iridaceae | Iris

13. Iris douglasiana Herbert G. A. W. Arnott in W. J. Hooker and, Bot. Beechey Voy. 395. 1840.

Mountain iris

Iris beecheyana Herbert; I. douglasiana var. alpha Dykes; I. douglasiana var. altissima Purdy ex Jepson; I. douglasiana var. beecheyana (Herbert) Baker; I. douglasiana var. bracteata Herbert; I. douglasiana var. major Torrey; I. douglasiana var. mendocinensis Eastwood; I. douglasiana var. nuda Herbert; I. douglasiana var. oregonensis R. C. Foster; I. watsoniana Purdy

Rhizomes freely branching, forming large colonies, slender, 0.8—0.9 cm diam., covered with remains of old leaves; roots fibrous. Stems 1—4-branched, solid, 1.5—7 dm. Leaves: basal with blade yellow-green, occasionally darker green, sometimes flushed pink or red basally, prominently ribbed, linear, 4.5—10 dm × 2 cm, apex acute; cauline 1—3, reduced. Inflorescence units (2—)3-flowered, branch units 2—3-flowered; spathes opposite or separated, divergent, green, sometimes flushed purple basally, lanceolate-acuminate, 6—12 cm × 7—12 mm. Flowers: perianth deep red-purple, lavender, gray-blue, cream, or white, with gold signal and blue or purple veins; floral tube 1.5—2.8 cm, usually widening to bowl shape at base of flower; sepals oblanceolate to obovate, 5—9 × 1.4—3 cm, base gradually attenuate, apex obtusely rounded; petals oblanceolate, 4.5—7 × 0.9—1.8 cm, base attenuate to narrow claw; ovary elliptic-oval, sharply triangular in cross section, 3—4 cm; style 1.7—3.5 cm; crests overlapping, subquadrate, 1—2 cm, margins coarsely toothed; stigmas triangular; pedicel 2—5 cm. Capsules sharply triangular in cross section with ridge at each angle, tapering at both ends, remnant of floral tube forming tip at apex, 2.5—5 cm. Seeds dark brown, pyriform, wrinkled. 2n = 40.

Flowering Apr--Jun. Open woods, sunny slopes and fields; Calif., Oreg.

R. C. Foster (1937) named several varieties of Iris douglasiana, about which L. W. Lenz (1954) said, "This is a widespread and extremely variable species whose total variability is being increased due to introgressive hybridization between it and other species with which it has come into contact. Well marked and distinct geographic races cannot be detected; however, pronounced variations are to be found within a single population. For these reasons no attempt is made here to segregate taxa within such a polymorphic species."

Iris douglasiana hybridizes with I. bracteata, I. chrysophylla, I. fernaldii, I. hartwegii, I. innominata, I. macrosiphon, I. munzii, I. purdyi, I. tenax, and I. tenuissima. The natural hybrid between I. douglasiana and I. innominata has been designated as Iris ×thompsonii R. C. Foster and the garden hybrid as Iris ×aureonympha E. H. English.

Following modified from CalPhotos
   Top | See original

http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Iris+douglasiana&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Iris+douglasiana&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Iris+douglasiana&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

Updated: 2017-11-21 09:16:22 gmt
Discover Life | Top
© Designed by The Polistes Corporation