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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
|---|
| 0 | PI 479297 | NA 51168 | Alnus japonica (Thunb.) Steud. | Japan | NC7 | | | 1982 | COLLECTED | 09/23/1982 | East, 7km of Kushiro along hwy 44, Kushiro-shi, Hokkaido | 42.98333333, 144.45000000 | | | Wild material | Snow cover 50cm. Minimum temperature -28C. Tree deciduous, 7.6-9.1m tall. Branches spreading very brittle. Bark rough, light gray. Leaves deep green above, impressed. Growing in a marsh moor, open area; only tree in this habitat. Seed collected from 5 trees. | 1374233 | PI 479297 |
| 1 | Ames 27961 | 'September Sun' | Alnus maritima (Marshall) Muhl. ex Nutt. subsp. oklahomensis J. A. Schrad. & W. R. Graves | Oklahoma, United States | NC7 |  | Not Available | 2005 | COLLECTED | 10/15/1997 | Blue River watershed approximately 8.0 miles northeast of Tishomingo, Johnston County | 34.33336800, -96.59511400 | | | Cultivar | Selected from a trial of seedlings af A. maritima subsp. oklahomensis on the campus of Iowa State University, Ames. The seed that formed the original plant was obtained from an open-pollintaed A. maritima subsp. oklahomensis growing on the bank of the Blue River near Tishomingo, Oklahoma. 'September Sun' has been propagated with high rates of success from softwood cuttings by using the methods of Schrader and Graves. Ramets grow rapidly and can be 2 meters tall within 2 years. Suitable for use in USDA hardiness Zone 4a and possibly in areas as cold as USDA Zone 3a. Although the heat tolerance and minimal chilling requirement of this cultivar have not been established, it is native to USDA Zone 7a. Therefore, its useful range includes areas with mean annual minimum temperatures at least as mild as -15 C, and attempts to use 'September Sun' in somewhat milder climates are warranted. Thrives in wet soils, can survive complete inundation of its root zone with fresh water indefinitely, and is more resistant to drought than are other alders cultivated in North America. Should be planted at exposed sites only. Its symbiotic relationship with Frankia, makes 'September Sun' an excellent choice for nitrogen-poor soils. Vigorous plants that remain free of foliar chlorosis in soils exceeding pH 7 have been grown in Iowa. Mature plants are large shrubs or small trees with multiple trunks that form broadly rounded, upright canopies 7 meters tall and 5 meters wide. Trunks support more leaves and axillary shoots than are found on plants of the others subspecies. This leads to dense canopies of glossy leaves that are darker green than the leaves of all other alders indigenous to North America. Leaves display mottled blends of yellow, orange, and rich brown under autumnal conditions in USDA hardiness Zone 5a. The infructescences of 'September Sun' are medium to dark brown, cone-like strobili; each is 16-22 mm long and 11-14 mm in diameter. Strobilimature 1 year after pollination and then persist on the branches through at least one more season, providing subtle ornamental appeal throughout the year. This cultivar differs from other genotypes of its species as the fastest-growing, most densely foliated, and most symmetrically shaped individual observed in field trials with over 1000 plants. | 1700783 | Ames 27961 |