Iris chrysophylla

Howell

Fl. N. W. Amer., 633. 1902.

Common names: Yellow-leaf iris
Endemic
Treatment appears in FNA Volume 26. Treatment on page 386. Mentioned on page 374, 382, 384, 385, 387.

Rhizomes compact, dark-brown, slender, 0.5–0.6 cm diam., covered with old leaf-bases; roots few, fibrous. Stems simple, solid, slender, 0.25–2 dm. Leaves: basal with blade light green, pink or red-tinged basally, finely ribbed, linear-acute, 2.5–5 dm × 0.3–0.5 cm, somewhat glaucous, margins not thickened; cauline 1–3, imbricated, blade bractlike, inflated. Inflorescence units usually 2–flowered; spathes sometimes flushed pink or purple apically, lanceolate to linearlanceolate, 5–10 cm × 3–7 mm, unequal, outer much shorter and narrower than inner, herbaceous, margins often scarious, apex acute. Flowers: perianth cream or very pale-yellow, with deeper yellow or lavender veins; floral-tube linear, slender, 4.5–12 cm; sepals with bluish tinge and veins, oblanceolate, 4.6–7 × 1–2 cm, base gradually attenuate; petals lanceolate, 3–5.5 × 0.6–1.2 cm, base gradually attenuate, apex emarginate; ovary 1–1.8 cm, base abruptly attenuate into pedicel (when present), apex gradually acuminate into floral-tube; style 2–3 cm, crests 1.5–2 cm, sometimes exceeding arms, apex narrowly pointed; stigmas tongue-shaped, margins entire; pedicel absent or 0.5–1 cm at anthesis. Capsules sometimes on elongated pedicel, oblong, round in cross-section, sharply beaked, 2–3 cm. Seeds buff, slightly compressed. 2n = 40.


Phenology: Flowering Apr–Jun.
Habitat: Open, coniferous forests

Discussion

Iris chrysophylla hybridizes with I. bracteata, I. douglasiana, I. innominata, I. macrosiphon, I. purdyi, I. tenax, and I. tenuissima.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."decreasing" is not a number."much shorter and narrower" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Iris chrysophylla"
dehiscing +  and latrorse +
Pointed (?) +, Acuminate (?) +  and Acute (?) +
Norlan C. Henderson +
Howell +
red-tinged +  and pink +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
attenuate +
Iris subsect. Californicae +
light green +
inflated +  and bractlike +
additional +
cordlike +
enlarging +
round +  and oblong +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Yellow-leaf iris +
1.5cm +  and 2cm +
monochasial +
Calif. +  and Oreg. +
distinct or;partly completely connate +
hollow +  and solid +
ridged +  and terete +
4.5 cm45 mm <br />0.045 m <br /> (12 cm120 mm <br />0.12 m <br />) +
sessile +  and pedicellate +
fragrant +
upward-facing +
hollow +, solid +, branched +  and simple +
flattened +, terete +  and cordlike +
indehiscent +  and loculicidal +
woody;firm;cartilaginous +
Open, coniferous forests +
multicellular +
distinct +
cauline +  and basal +
scale-like +
distinct +
conspicuous +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
triangular +  and rounded +
not thickened +
6-angled +, 3-angled +  and terete +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
elongated +
4 cm40 mm <br />0.04 m <br /> (18 cm180 mm <br />0.18 m <br />) +
differentiated +
3 cm30 mm <br />0.03 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
reflexed +, spreading +  and erect +
reduced +
0.6 cm6 mm <br />0.006 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
Flowering Apr–Jun. +
Fl. N. W. Amer., +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
heterogeneous +
tan;dark-brown +
conspicuously roughened +  and extensively corky +
4 +  and 20 +
compressed +
reflexed +  and spreading +
oblanceolate +
expanding +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
purple +  and flushed pink +
persisting +
lanceolate +
unequal +
monochasial +
solid +  and simple +
slender +
tongue--shaped +
3-lobed +  and filiform +
2 cm20 mm <br />0.02 m <br /> (?) +  and 3 cm30 mm <br />0.03 m <br /> (?) +
Undefined subg. Limniris +
Iris chrysophylla +
Iris (sect. Limniris) ser. Californicae +
species +
connate +  and distinct +
scarious +
spathaceous +  and more-flowered +
bluish tinge +, lavender +  and deeper yellow +
obscure;prominent +
hardened +  and papery +
unequal +