Iris x ampliflora Y.E. Xiao, F.Y. Yu & X.F. Chen, 2021
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publication ID |
https://dx.doi.org/10.3897/phytokeys.174.62306 |
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persistent identifier |
https://treatment.plazi.org/id/B2DF36F7-DC0C-5D58-B02A-5ACCE9B11ECB |
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treatment provided by |
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scientific name |
Iris x ampliflora Y.E. Xiao, F.Y. Yu & X.F. Chen |
| status |
nothosp. nov. |
Iris x ampliflora Y.E. Xiao, F.Y. Yu & X.F. Chen nothosp. nov. Figures 1 View Figure 1 , 2 View Figure 2 , Appendix 2: Figure A1 View Figure A1
Diagnosis.
Morphologically similar to I. japonica , the new hybrid differs in having 7-10 branches and an aerial stem (25-29 cm compared to 10-15 cm), larger leaves (length and width, 68-80 cm and 6-7 cm compared to 45-51 cm and 3-4.5 cm) and larger purple flowers (diam., 11-13 cm compared to 4-5 cm).
Type.
Shanghai Botanical Garden, grown from collection from the Qingyang Town of Fuling District , Chongqing, 14 June 2014, Y. E. Xiao XYE20140614 (holotype: CSH-0180673!; isotypes: CSH!) . A photo of the holotype is shown in Appendix 2: Figure A1 View Figure A1 .
Description.
Rhizomes creeping, thick, ca. 1.5-2 cm in diam. Overall plant up to 85.4-125.5 cm. Stem ascending upright, 24-31 cm. Leaves mainly in basal fans, green, broadly sword-shaped, curved, midrib evident, 69.0-82.9 × 5.5-7.5 cm, the basal leaves fibrous. Flowering stems with 7-10 branched that arise in the axillary leaves, 1- or 2 leaved subtend the flower on the branch, ca. 50.0 × 4.5 cm. Spathes 2 or 3, green, lanceolate, ca. 2 cm, 3- or 4- flowered, seldom 5, apex acuminate. Flowers blueish violet, 11.5-12.8 cm in diam.; pedicel 1.5-3.0 cm, perianth tube slender, ca. 1.5 cm; outer segments mottled darker around conspicuous, yellow, irregularly toothed crest, broadly ovate, 6.8-7.3 × 5.2-5.5 cm; inner segments spreading horizontally at anthesis, elliptical, 5.5-6.2 × 3.9-4.2 cm. Stamens ca. 2 cm; anthers bright white without pollen. Style branches pale bluish violet, 4-5 cm, feathery apex, terminal lobes fimbriate. Ovary cylindrical, ca. 2 cm. Flowering season, March-April. Sterile.
Etymology.
The new hybrid is named for the large flower.
Distribution and habitat.
Iris x ampliflora was collected from the Qingyang Town , Fuling District , Chongqing, China (29°31'40.8"N, 107°12'54"E). With complicated mountainous topography, the Qingyang Town is located in the range of the Dalou Mountains with an average altitude of 750 m. There were about 10 clones each with 6-10 individuals in the population of I. x ampliflora , covering an area of 200 m 2. Plants of I. x ampliflora grow well on roadsides of subtropical mixed evergreen deciduous broad-leaved forest in full-sun and partly-shaded environments at an altitude of about 650 m. The lowest and highest temperature of the original site are about -5 ° C and 38 ° C, respectively GoogleMaps .
Phenology and reproductive characteristics.
Iris x ampliflora blooms in March to April in Chongqing, and it blooms in April in Shanghai. It is evergreen. No fruits have been observed, but it can reproduce vegetatively.
Preliminary conservation status.
Only one population of I. x ampliflora was found by our investigation in Qingyang Region and there are risks of disturbance by human activities. I. x ampliflora is currently cultivated in the conservation nurseries of Shanghai Botanical Garden and the Flower Fragrance Horticulture Limited Company in Chongqing.
Other Iris species examined.
I. japonica Chongqing Municipality , WUK0495843 View Materials ; PE 01012482; PE 01012483; PE 01012489; PE 01012492; IMC0013795 View Materials . I. confusa Chongqing Municipality , CDBI0169691 View Materials , IMC0013989 View Materials , IMC0013998 View Materials ; IMC0014000 View Materials ; IMC0014010 View Materials . I. milesii Yunnan Province, LBG 00106670 View Materials ; LBG00106671 View Materials ; KUN0360444 View Materials . I. wattii Chongqing Municipality , KUN0360622 View Materials . Mount Emei , Sichuan Province, CSH0086611 View Materials . Liangshan Prefecture, Sichuan Province, PE01013840 . I. tectorum , Chongqing Municipality , IBSC0629040 View Materials ; IBSC0629027 View Materials ; CDBI0169658 View Materials .
| Y |
Yale University |
| E |
Royal Botanic Garden Edinburgh |
| CSH |
Chenshan Botanical Garden |
| A |
Harvard University - Arnold Arboretum |
| C |
University of Copenhagen |
| PE |
Institute of Botany, Chinese Academy of Sciences |
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