Rhodora 49: 133 (1947) I. prismatica: leaves terminating new stolons 2-5 mm. wide, shallowly or obscurely corrugated; valves of spathe pale brown, wholly or partly scario-membranaceous, the outer one rarely foliaceous; flower 5-7 cm. broad, with perianth-tube about 3 mm. long; blade of sepal ovate or obovate to roundish, 1.3-2 cm. broad, rather abruptly contracted to the broad claw; faces of capsule 6-14 (av. 9.6) mm. broad; seeds 3-4 mm. long. Var. austrina: leaves terminating new stolons 5-9 mm. wide, deeply corrugate-sulcate ; valves of spathe firm or subcoriaceous, either brown, or green and foliaceous; flower 8-10 cm. broad, with perianth-tube 5-6 mm. long; sepals spatulate-obovate, 1.2-1.7 cm. broad, the blade gradually tapering into the slender-based claw; faces of capsule 10-14 (av. 12.5) mm. broad; seeds 4-6 mm. long. |
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I | Attachment | Action | Size | Date | Who | Comment |
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jpg | Iris_prismatica01.jpg | manage | 73 K | 11 Oct 2014 - 20:08 | TerryLaurin | Photo scanned from the Adele and Lewis Lawyer slide collection |
jpg | IrisprismaticavaraustinaDKramb01.jpg | manage | 52 K | 11 Oct 2014 - 20:06 | TerryLaurin | Photo by Dennis Kramb-SIGNA |