Iris hartwegii |
Iris hookeri |
|
---|---|---|
Hartweg's iris, rainbow iris, Sierra iris |
beach-head iris, iris de Hooker |
|
Rhizomes | creeping, not producing dense clumps, covered with remains of old leaves, slender to moderately thick, 0.5–0.9 cm diam.; roots fibrous. |
many-branched, forming dense, cespitose clumps with many crowded fans with persistent old leaf bases, 3–5 × 1.3–1.5 cm. |
Stems | simple, solid, 0.5–3 dm. |
several to many from a single clump of fans, simple, 0.5–6 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. |
basal erect or strongly ascending, blade 1–5.2 dm × 0.5–1.4 cm; cauline 2–4, proximal 2–3 similar to basal leaves, distalmost leaf occasionally borne nearly midway on stem, clasping, blade bracteiform, lanceolate, 0.5–1.5 dm. |
Inflorescence units | 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. |
1–2-flowered; spathes herbaceous, lanceolate to oblong-ovate, 2.5–6 cm, firm, outer spathe apex acute, inner similar or scarious at apex. |
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. |
perianth deep to pale blue or blue-violet; floral tube 0.5–0.75 cm; sepals broadly rounded, 2.5–4 cm wide, base strongly attenuate to claw, signal diffuse white basal patch; petals much reduced to insignificant, involute or tubular rudiments, 1–2 cm, apex with short bristle, mostly hidden by sepal bases; ovary green or flushed purple, acutely trigonal; style white with purple keel, 2–5 cm, crests overlapping, 2-lobed, subquadrate, margins coarsely serrate; stigmas rounded-triangular, margins entire; pedicel 2.5–4 cm. |
Capsules | oblong-oval, 3-angled, tapering abruptly at either end, 2–3 cm. |
thin walled, trigonal, with rounded angles and grooved sides, 2–4 cm, apex blunt. |
Seeds | brown, irregularly D-shaped, wrinkled. |
in 2 rows per locule, dark brown with prominent white raphe, compressed-pyriform, 4–6 mm, lustrous. |
2n | = 40. |
= 38. |
Iris hartwegii |
Iris hookeri |
|
Phenology | Flowering Jun. | Flowering Jun–Jul. |
Habitat | Yellow-pine forests on sunny or partially shaded slopes | Grassy headlands, upper borders of beaches, dunes, and other coast formations, within reach of ocean spray |
Distribution |
CA
|
ME; NB; NL; NS; PE; QC |
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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Some authors still treat this taxon as Iris setosa var. canadensis, but others believe that it merits recognition as a separate species. I have seen I. hookeri flowering in its native habitat in both Nova Scotia and Prince Edward Island, and have examined dozens of herbarium specimens of both it and I. setosa, from which it is clearly distinct. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 385. | FNA vol. 26, p. 381. |
Parent taxa | Iridaceae > Iris > subg. Limniris > sect. Limniris > ser. Californicae | Iridaceae > Iris > subg. Limniris > sect. Limniris > ser. Tripetalae |
Sibling taxa | ||
Synonyms | I. hartwegii subsp. australis, I. hartwegii var. australis, I. hartwegii subsp. columbiana, I. hartwegii subsp. pinetorum, I. pinetorum | I. canadensis, I. setosa var. canadensis, I. setosa subsp. pygmaea |
Name authority | Baker: Gard. Chron., n. s. 6: 323. (1876) | Penny ex G. Don: in J. C. Loudon, Hort. Brit. ed. 2, 591. (1832) |
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