Difference: SpecTuberosaLongifolia (r4 vs. r3)

‘Longifolius’. (Robert Sweet, 1800). Hermodactylus. Sweet in The British Flower Garden, table 146 describes the Long-leaved Snake’s-head as Hermodactylus longifolius. He provides the flollowing notes; “Root, tubers varying from 1 to 2. Sheaths tightly surrounding the leaves at the base, varying in length, white, of a soft feel to the touch, somewhat inclining to membranaceous, but rather succulent, points soon decaying. Leaves very glaucescent, almost white, quadrangular, longitudinally striated; root ones frequently 3 to 4 ft in length, the largest above half an inch in circumferance”. Mathew’s The Iris lists this as Genus Hermodactylus but recent work at Kew indicates this will be returned to the Genus Iris. Iris tuberosa (Linn.) Salisbury ]. See below:

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