Iris bracteata |
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Siskiyou iris |
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Rhizomes | sheathed with old leaf bases, slender, 0.6–0.9 cm diam.; roots few, fibrous. |
Stems | simple, solid, 1.5–3 dm. |
Leaves | basal with abaxial surface of blades deep glossy green on one side of fan, light yellow-green on other side, pink or red-tinged basally, strongly ribbed, 4–6 dm × 0.8–1 cm, rigid, margins not thickened; cauline 3–6, imbricated, closely sheathing stem ca. 2/3 length, spreading distally, bractlike, blade inflated, often shorter than basal leaves. |
Inflorescences | simple, units 1–2-flowered; spathes closed tightly around pedicel and ovary, lanceolate, 5.2–9 cm × 6–8 mm, subequal, herbaceous, margins scarious, apex acuminate. |
Flowers | perianth cream to buff-yellow; floral tube 0.8–0.9 cm; sepals with deeper yellow signal, veined with purple or brown, obovate-lanceolate, 6.5 × 2.5 cm, base gradually attenuate into wide claw; petals narrowly oblanceolate, 7–9 × 0.8–2 cm, base gradually attenuate; ovary nearly circular in cross section, 1.5–2.5 cm, base gradually attenuate into pedicel, apex abruptly acuminate into floral tube; style 2.2–3 cm, crests spreading, yellow, not veined, 1.2 × 0.9–1.7 cm, margins toothed; stigmas triangular or tongue-shaped, margins entire; pedicel 3–6.2 cm. |
Capsules | nearly circular in cross section, tapering abruptly at each end, 2–2.5 × 1–1.5 cm. |
Seeds | dark brown, irregular in shape, wrinkled. |
2n | = 40. |
Iris bracteata |
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Phenology | Flowering May–Jun. |
Habitat | Shady forests, particularly ponderosa pine |
Distribution |
CA; OR
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Discussion | Iris bracteata is limited to one county each in northern California and southern Oregon. It hybridizes with I. chrysophylla, I. douglasiana, I. innominata, I. munzii, I. purdyi, and I. tenax. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26. |
Parent taxa | Iridaceae > Iris > subg. Limniris > sect. Limniris > ser. Californicae |
Sibling taxa | |
Name authority | S. Watson: Proc. Amer. Acad. Arts 20: 375. (1885) |
Web links |