Iris prismatica |
Iris innominata |
|
---|---|---|
slender blue iris |
Del Norte County iris, Del Norte iris, golden iris |
|
Rhizomes | superficial or only slightly buried in peaty soil, cordlike portions usually 1-branched, 40 cm × 2–5 mm, bearing scalelike leaves at nodes; nodal roots absent. |
freely branching, forming compact tufts, slender, 0.3–0.4 cm diam., covered with remains of old leaves; roots fibrous. |
Stems | simple or 1–2-branched, 3–8 dm. |
simple, solid, slender, 2–2.5 dm. |
Leaves | basal with blade slightly ribbed, 3–6 dm × 0.2–0.5 cm; cauline 1–4, erect. |
basal evergreen, abundant, blade dark, shining green on one side, lighter green on the other, pink to deep purple basally, 3.5 dm × 0.2–0.4 cm, longer than flowering stem, margins not thickened; cauline 2–4, sheathing stem for about 2/3 length, foliaceous, spreading, blade not inflated, 4–9 cm. |
Inflorescence units | 1–3-flowered, branch units 1–2-flowered; spathes pale brown, narrowly lanceolate, 2–4 cm, scarious or partially membranaceous. |
1(–2)-flowered; spathes closely enclosing ovary and floral tube, broadly lanceolate to ovate, 3.3–6 cm × 5–7 mm, herbaceous, margins scarious. |
Flowers | perianth pale blue or blue-violet; floral tube 0.2–0.3 cm; sepals pale violet, veined deep violet basally, ovate, 4–5 × 1.3–2 cm, base abruptly attenuate; petals lavender, oblanceolate, 3.5–4.5 × 0.7–1.5 cm; ovary trigonal, sharply angled; style arched, narrow, 2–3 cm, crests divergent, quadrate, 0.5–0.7 cm, margins serrate; stigmas sharply triangular; pedicel somewhat flattened, 3–7 cm, exserted from spathe. |
perianth usually dark golden yellow, cream, pink, lavender, or purple, heavily veined purple or brown; floral tube 1.5–3 cm; sepals usually yellow with heavy veining, broadly oblanceolate, 4.5–6 × 1.7–3 cm, base gradually attenuate, margins often wavy; petals same color as sepals with lighter veining, narrowly oblanceolate, 4–5.7 × 0.9–1.6 cm, base gradually attenuate; ovary roundly triangular in cross section, 1.5–1.8 cm; style 2–2.6 cm, crests overlapping, subquadrate to semiovate, 0.9–1.4 cm, margins irregularly toothed; stigmas triangular, margins entire; pedicel 0.4–1.3 cm at anthesis. |
Capsules | sharply 3-angled, almost winged, 3–4 × 1.2–1.4 cm, concave faces 6–14 mm wide. |
oblong-oval, circular in cross section, 2.5 × 1.2 cm. |
Seeds | in 1 row per locule, buff to dark brown, pyriform, with convex sides, 3–4 mm, smooth. |
in 2 rows per locule, dark brown, oval, sharply angled, 3 mm, wrinkled, pitted. |
2n | = 42. |
= 40. |
Iris prismatica |
Iris innominata |
|
Phenology | Flowering Apr–Jul. | Flowering May–Jun. |
Habitat | Swampy, peaty soil | Dry, sunny woods |
Distribution |
AL; CT; DE; GA; KY; MA; MD; ME; NC; NH; NJ; NY; RI; SC; TN; VA
|
CA; OR
|
Discussion | Iris innominata hybridizes with I. bracteata, I. chrysophylla, I. douglasiana, I. fernaldii, I. macrosiphon, I. munzii, I. purdyi, and I. tenax. It is known only from southwestern Oregon and Del Norte County in northwestern California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 26, p. 395. | FNA vol. 26, p. 387. |
Parent taxa | Iridaceae > Iris > subg. Limniris > sect. Limniris > ser. Prisimaticae | Iridaceae > Iris > subg. Limniris > sect. Limniris > ser. Californicae |
Sibling taxa | ||
Name authority | Pursh: Fl. Amer. Sept. 1: 30. (1814) | L. F. Henderson: Rhodora 32: 23. (1930) |
Web links |