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IRIDACEAE IRIS FAMILY

Peter Goldblatt, except as noted

[(Annual), shrub], perennial herb generally from [bulb], corm, or rhizome. Stem: generally erect, generally ± round in ×-section. Leaf: generally basal (few cauline), 2-ranked, ± sword-shaped, blade edge-wise to stem, with midvein or not; bases overlapped, sheathing. Inflorescence: generally ± terminal; spikes, umbel-like cymes, or flowers 1; flowers in spikes or 1 subtended by 2 subopposite flower bracts; umbel-like cymes enclosed by 2 subopposite, generally large, leaf-like inflorescence bracts, including various flower bracts. Flower: bisexual (unisexual), radial, with stamens erect, enclosing style, or bilateral, with stamens, style to 1 side, stamens not enclosing style; perianth radial, parts free or generally fused into tube above ovary, generally petal-like, in 2 series of 3, outer ± like inner (or not, in Iris, parts in that genus called sepals, petals), upper ± like lower or not; stamens 3, attached at base of outer 3 perianth parts or in tube, generally free; ovary inferior [(superior)], [(1)]3-chambered, placentas axile [(parietal)], style 1, branches 3, entire to 2-branched, thread- or petal-like with stigma abaxial, proximal to tip. Fruit: capsule, loculicidal. Seed: few to many.
± 65 genera, ± 2050 species: worldwide, especially Africa; many cultivated (e.g., Crocus, Dietes, Freesia, Gladiolus, Iris, Sisyrinchium). [Goldblatt & Manning 2008 The Iris Family: Natural History and Classification. Timber Press] Gladiolus italicus Mill., Gladiolus tristis L. are urban weeds. Sparaxis grandiflora (D. Delaroche) Ker Gawl., Sparaxis tricolor (Schneev.) Ker Gawl. are waifs. —Scientific Editor: Thomas J. Rosatti.

Key to Iridaceae

SISYRINCHIUM

Anita F. Cholewa

[Annual] perennial herb; rhizomes compact. Stem: 1 or tufted, ± flat, winged, nodes well above basal leaves with leaves or not, each with >= 1 flower-branch. Leaf: bases overlapped, sheathing. Inflorescence: flowers in umbel-like cymes; bracts 2, equal in length or not, margins translucent. Flower: perianth red-purple, ± blue, violet, yellow (white), parts mucronate, ± alike, outer generally wider; filaments ± free to ± fused. Seed: ovoid, smooth or pitted.
100+ species: western hemisphere. (Latin, Greek: pig, snout) Use of treatments prior to ± 2003 often results in misidentification. Sisyrinchium douglasii moved to Olsynium.
Unabridged etymology: (Latin, sus, pig, and Greek, rhynchos, snout, alluding to swine digging the roots of some bulbous plant for food, spoken of by Pliny and Theophrastus (W.J. Hooker, 1830). The reason for applying the name to a genus of New World Iridaceae was apparently arbitrary.)
Unabridged references: [Henderson 1976 Brittonia 28:149–176]
Unabridged note: Use of treatments prior to ± 2003 often results in misidentification due to inconsistent or incorrect use of morphological terms and the fact the taxa look very much alike.

Key to Sisyrinchium

S. idahoense E.P. Bicknell IDAHO BLUE-EYED-GRASS
NATIVE
Stem: tufted, < 45 cm, green to glaucous, leaf-bearing nodes 0(1). Inflorescence: translucent margins of inner bract ± uniformly narrow. Flower: perianth 8–17(20) mm, generally blue to blue-violet, base yellow, outer parts generally elliptic to narrowly oblanceolate, tips rounded to deep-notched. Highly variable, self- or cross-pollinated. Varieties intergrade; 2 others, in Washington, British Columbia. [Online Interchange]

Previous taxon: Sisyrinchium hitchcockii
Next taxon: Sisyrinchium idahoense var. idahoense

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 25 2014
Citation for this treatment: [Author of taxon treatment] 2013. Sisyrinchium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44711, accessed on Nov 25 2014

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Geographic subdivisions indicated for the distribution of Sisyrinchium idahoense Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.