Iris hartwegii

Baker

Gard. Chron., n. s. 6: 323. 1876.

Common names: Sierra iris
Endemic
Synonyms: Iris hartwegii subsp. australis (Parish) L. W. Lenz Iris hartwegii var. australis Parish Iris hartwegii subsp. columbiana L. W. Lenz Iris hartwegii subsp. pinetorum (Eastwood) L. W. Lenz Iris pinetorum
Treatment appears in FNA Volume 26. Treatment on page 385. Mentioned on page 374, 382, 383, 384, 386, 387.

Rhizomes 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, 0.5–3 dm. Leaves: 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 (–3) -flowered; spathes divergent, separated by 1.5–4 cm, linear to linearlanceolate, unequal, outer 5–11 cm × 4–7 mm, inner 5–6 cm × 2–3 mm, herbaceous, apex acute. Flowers: 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-oval, 3-angled, tapering abruptly at either end, 2–3 cm. Seeds brown, irregularly D-shaped, wrinkled. 2n = 40.


Phenology: Flowering Jun.
Habitat: Yellow-pine forests on sunny or partially shaded slopes

Discussion

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.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."sheathing" is not a number.No values specified."thick" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Iris hartwegii"
dehiscing +  and latrorse +
Norlan C. Henderson +
attenuate +
Iris subsect. Californicae +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
pink +  and pale green +
not inflated +
0.2cm;0.6cm +
additional +
cordlike +
enlarging +
tapering +, 3-angled +  and oblong-oval +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Sierra iris +
overlapping +
0.5cm +  and 1.1cm +
monochasial +
distinct or;partly completely connate +
hollow +  and solid +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
ridged +  and terete +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
sessile +  and pedicellate +
fragrant +
upward-facing +
hollow +, solid +, branched +  and simple +
flattened +, terete +  and cordlike +
indehiscent +  and loculicidal +
woody;firm;cartilaginous +
Yellow-pine forests on sunny or partially shaded slopes +
multicellular +
distinct +
cauline +  and basal +
scale-like +
distinct +
conspicuous +
triangular +  and rounded +
not thickened +
cylindrical +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
4 cm40 mm <br />0.04 m <br /> (18 cm180 mm <br />0.18 m <br />) +
differentiated +
reflexed +, spreading +  and erect +
reduced +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 1.1 cm11 mm <br />0.011 m <br /> (?) +
Flowering Jun. +
Gard. Chron., n. s. +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
not slender +
heterogeneous +
tan;dark-brown +
conspicuously roughened +  and extensively corky +
4 +  and 20 +
wrinkled +
d--shaped +
reflexed +  and spreading +
oblanceolate +
expanding +
1.4 cm14 mm <br />0.014 m <br /> (2 cm20 mm <br />0.02 m <br />) +
separated +  and divergent +
persisting +
inner +  and outer +
unequal +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
monochasial +
solid +  and simple +
triangular +
3-lobed +  and filiform +
1.6 cm16 mm <br />0.016 m <br /> (?) +  and 3 cm30 mm <br />0.03 m <br /> (?) +
Iris hartwegii subsp. australis +, Iris hartwegii var. australis +, Iris hartwegii subsp. columbiana +, Iris hartwegii subsp. pinetorum +  and Iris pinetorum +
Iris hartwegii +
Iris (sect. Limniris) ser. Californicae +
species +
connate +  and distinct +
scarious +
spathaceous +  and more-flowered +
obscure;prominent +
hardened +  and papery +
unequal +