Iris purdyi |
Iris hartwegii |
|
---|---|---|
Purdy's iris, redwood iris |
Hartweg's iris, rainbow iris, Sierra 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. |
creeping, not producing dense clumps, covered with remains of old leaves, slender to moderately thick, 0.5–0.9 cm diam.; roots fibrous. |
Stems | simple, solid, 1.5–2.5 dm. |
simple, solid, 0.5–3 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 deciduous, blade pale green, not pink basally, 2–4.5 dm × 0.2–0.6(–1) cm, sometimes glaucous, margins not thickened; cauline usually 1–several, spreading, sheathing for about 1/2 length, foliaceous, blade not inflated. |
Inflorescence units | 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. |
1–2(–3)-flowered; spathes divergent, separated by 1.5–4 cm, linear to linear-lanceolate, unequal, outer 5–11 cm × 4–7 mm, inner 5–6 cm × 2–3 mm, herbaceous, apex acute. |
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 lavender, cream, or pale to deep yellow; floral tube funnelform, 0.5–1(–1.5) cm; sepals oblanceolate, 4–7 × 1.4–2 cm, base gradually attenuate; petals narrowly oblanceolate, 3.5–6 × 0.5–1.1 cm, widest at about 1/2 their length, base abruptly attenuate, claw 1–2 mm wide; ovary nearly cylindrical, 1–2 cm; style 1.6–3 cm, crests overlapping, obtusely angled, 0.5–1.1 cm; stigmas acutely triangular, margins entire; pedicel 0.5–2.5 cm at anthesis, lengthening to 3.5–7.5 cm at maturity. |
Capsules | oblong-ovoid, trigonal, somewhat beaked, 2–3 cm. |
oblong-oval, 3-angled, tapering abruptly at either end, 2–3 cm. |
Seeds | light brown, D-shaped, oblong-ovoid, thick, finely wrinkled. |
brown, irregularly D-shaped, wrinkled. |
2n | = 40. |
= 40. |
Iris purdyi |
Iris hartwegii |
|
Phenology | Flowering Apr–Jul. | Flowering Jun. |
Habitat | Open woods of redwood region | Yellow-pine forests on sunny or partially shaded slopes |
Distribution |
CA
|
CA
|
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.) |
Plants with pedicels 2.8–4.7 cm, and flowers light purple or bluish violet have been recognized as subsp. australis. Plants having a 3-flowered inflorescence unit, leaves about 1 cm wide, and pale yellow flowers with golden yellow veining have been called subsp. columbiana. Plants having both flowers open at the same time rather than consecutively, pedicels averaging only 1 cm, long narrow style arms and crests, and floral tubes 1.2–1.5 cm have been named subsp. pinetorum. Iris hartwegii hybridizes with I. douglasiana, I. innominata, I. macrosiphon, I. munzii, I. tenax, and I. tenuissima. It is known from Butte County to Kern County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 385. | FNA vol. 26, p. 385. |
Parent taxa | Iridaceae > Iris > subg. Limniris > sect. Limniris > ser. Californicae | Iridaceae > Iris > subg. Limniris > sect. Limniris > ser. Californicae |
Sibling taxa | ||
Synonyms | I. lansdaleana, I. macrosiphon var. purdyi | I. hartwegii subsp. australis, I. hartwegii var. australis, I. hartwegii subsp. columbiana, I. hartwegii subsp. pinetorum, I. pinetorum |
Name authority | Eastwood: Proc. Calif. Acad. Sci., ser. 3, 1: 78, plate 7, fig. 2. (1897) | Baker: Gard. Chron., n. s. 6: 323. (1876) |
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