■ (SPEC) Iris chrysophylla Howell
Iris chrysophylla Howell
(T. J. Howell
, 1897, Oregon); CA (Series Californicae)
; 8" (20 cm); Color Class-Y1; Flowers 2 per stem, pale cream color or off-white veined in gold or violet; style crests very long and narrow only slightly reflexed; perianth tube very long (4.5-12 cm); spathes closed; ovary ovoid; evergreen leaves, narrow (3-5 mm wide), light-green, often glaucous and stained pink or red at base. Distinguished from Iris tenuissima
by the shape of its perianth tube which only widens slightly at apex.
| Howell in Fl. N.W. Am. 1: 633. 1897;I. chrysophylla. Stems low and very slender, 2-8 inches high, from slender rootstocks: radical leaves linear, 6-18 inches long by 2-3 lines wide, light green, finely striate, thick and persistent for at least one winter: bracts lanceolate, long-acuminate, contiguous, 2-4 inches long: flowers 1-3, sessile or nearly so, yellow to white, with blue veins: perianth with filiform tube 2-3 inches long; outer segments 2-3 inches long, with long claw and broadly lanceolate blade, inner ones spatulate: filaments flat, bearded at base: capsule oblong or broader, nearly an inch long: seeds slightly compressed. In Pine woods, southern Oregon.
| Ainsley 1928; Per. 1930;
| Originally considered a form of Iris macrosiphon in 1939 checklist, now raised to specific rank.
| Bulletin of the American Iris Society 53: 15. Oct. 1934 illustrated;
2n=40, Foster, 1937. Iris chrysophylla
. Registered as a cultivar 'Chrysophylla'.
'Chrysophylla', 'Noti Form'
crosses: 'Valley Banner'
¼ Iris chrysophylla crosses: 'Candy Banner'
, 'Foothill Banner'
, 'Ruth Hardy'
Distribution and Cultivation
| Distribution: The distribution of the species gives clues as to its cultural requirements, although plants in cultivation can often tolerate a wider range of variables: The species is found in the following region: California and OregonBonap's North American Plant Atlas shows the following map reproduced by permission of Kartesz, J.T., The Biota of North America Program (BONAP). 2015. Taxonomic Data Center. (http://www.bonap.net/tdc). Chapel Hill, N.C. [maps generated from Kartesz, J.T. 2015. Floristic Synthesis of North America, Version 1.0. Biota of North America Program (BONAP). (in press)]
| Cultivation; Prefers moist soil, but can be grown in good garden soil, well-drained and flourishes in full sun to part shade.
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