Iris purdyi |
Iris tenuis |
|
---|---|---|
Purdy's iris, redwood iris |
Clackamas iris |
|
Rhizomes | much branched, forming dense clumps, dark red-brown, very slender, 0.3–0.6 cm diam., covered with remains of old leaves; roots fibrous. |
superficial or very shallow, cordlike portion 1–2 dm × 2 mm, expanding to 10–15 mm diam., nodes with brown, scalelike leaves and few to no roots. |
Stems | simple, solid, 1.5–2.5 dm. |
1–2-branched, 3–3.2 dm. |
Leaves | basal few, laxly spreading, longer than stem, blade bright dark green adaxially, flushed pink basally, veins subprominent, linear, 2.8–4.8 dm × 0.5–0.8 cm, rather glaucous abaxially, margins thickened, apex acute; cauline imbricated, sheathing, free only at tips, bracteiform, blade green edged with pink, strongly striate, inflated, apex acuminate. |
basal with blade pale green, 3.2 dm × 1.5 cm, margins scarious basally, apex acute, proximal 2 semi- sheathing, blade 5 cm, scarious; cauline 1–2, sheathing branch and stem for ca. 1/2 their length, blade ca. 5 cm, semimembranous. |
Inflorescences/ |
1–2-flowered; spathes green with prominent red margins, inflated, broadly lanceolate-ovate, 5.6–7 cm × 8–13 mm, unequal, outer shorter than inner, herbaceous, apex acuminate. |
2–3-branched, each unit with single flower, all borne at approximately the same level; spathes 2–3 cm × 5 mm, subequal, scarious except basally and along midrib. |
Flowers | perianth pale creamy yellow flushed with pale lavender, with conspicuous brownish purple lines; floral tube linear, 3–5 cm, somewhat dilated apically; sepals widely spreading, veined and dotted with deeper purple on claw and limb, oblanceolate, 5.5–8.4 × 1.6–2.7 cm; petals spreading, lanceolate, 5–7 × 1–2 cm, margins sinuate; ovary trigonal in cross section with groove along each angle, narrow, 1–1.5 cm; style 2–3 cm, crests narrowly semiovate or nearly linear, laciniate, 1–2 cm; stigmas rounded-truncate to 2-lobed, never triangular, margins minutely denticulate; pedicel 1–2 cm. |
perianth white or blue tinged with deep violet lines; floral tube funnelform, 0.3 cm; sepals oblong-spatulate, 2.8 × 1 cm, apex deeply emarginate, signal an inconspicuous crest with low, yellow, undissected ridge; petals bluish white, oblanceolate-spatulate, base gradually attenuate into claw; ovary elliptical, 0.4–0.7 cm; style 1.8 cm, crests broadly obovate, 0.7 cm, margins erose; stigmas triangular-acuminate, margins entire; pedicel 0.4–1 cm, not lifting flower clear of spathes. |
Capsules | oblong-ovoid, trigonal, somewhat beaked, 2–3 cm. |
depressed-globose, roundly triangular, 0.9–1.5 × 1.2 cm. |
Seeds | light brown, D-shaped, oblong-ovoid, thick, finely wrinkled. |
pale brown, with whitish raphe, D-shaped, pitted. |
2n | = 40. |
= 28. |
Iris purdyi |
Iris tenuis |
|
Phenology | Flowering Apr–Jul. | Flowering May. |
Habitat | Open woods of redwood region | Open, wooded slopes in leafy soil with Douglas fir and dense shrubs |
Distribution |
CA
|
OR |
Discussion | Iris purdyi hybridizes with I. bracteata, I. chrysophylla, I. douglasiana, I. innominata, I. macrosiphon, I. tenax, and I. tenuissima. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Iris tenuis was originally placed in ser. Californicae, but R. C. Foster (1937) stated, “It is with some hesitation that I leave it in association with them. The broad, pale green leaves are much like those of a giant I. cristata.” F. H. Smith and Q. D. Clarkson (1956) said, “It clearly does not belong in the subsection with the other members of the Californicae,” and Clarkson in a later treatment (1958) created a new subsection, the Oregonae, for it. L. W. Lenz (1959b) moved this species into subsect. Evansia (= sect. Lophiris), with which it shows many relationships. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 385. | FNA vol. 26, p. 378. |
Parent taxa | Iridaceae > Iris > subg. Limniris > sect. Limniris > ser. Californicae | Iridaceae > Iris > subg. Limniris > sect. Lophiris |
Sibling taxa | ||
Synonyms | I. lansdaleana, I. macrosiphon var. purdyi | |
Name authority | Eastwood: Proc. Calif. Acad. Sci., ser. 3, 1: 78, plate 7, fig. 2. (1897) | S. Watson: Proc. Amer. Acad. Arts 17: 380. (1882) |
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