Derris sp. Claudie River (L.J.Webb 8348)
Provisional HISPID phrase name.
Pink Cascade; Derris, Northern; Northern Derris
Usually 5-7 leaflets in each compound leaf. Leaflet blades about 4-16 x 2-7.5 cm, leaflet stalks about 0.5-1 cm long, usually transversely wrinkled. 'Stalk' of the terminal leaflet much longer than the stalk of the lateral leaflets. Stipules about 1-2.5 mm long, rounded at the apex, clothed in brown hairs.
Flowers borne in raceme-like structures or narrow panicles about 10-15 cm long. Pedicels appear to be about 2-6 mm long but because there are two bracts just beneath the calyx the flowers should be regarded as sessile on a peduncle about 2-6 mm long. Flowers about 7-10 mm diam. Calyx tube about 2-2.5 mm long, lobes about 0.3-1 mm long. Petals: standard about 7-11 mm long with a green centre near the base; wings about 8-9 mm long; keel about 8-9 mm long. Stamens 10, the filaments of nine stamens fused to form a tube open on one side. One stamen free. Staminal tube about 6 mm long, free filaments alternately long and short. Ovary stalked. Stalk + ovary + style about 11 mm long. Ovary about 5-6 mm long. Disk cup-shaped.
Fruits flat and papery, about 3.5 x 1.5-2.5 cm overall including the 2-5 mm wide wing along one margin. Style remnant, about 5 mm long, persistent at the apex. Seeds reniform, about 10-12 x 15-18 mm. Cotyledons reniform, about 15 x 18 mm. Radicle about 1 mm long, located at the end of the cotyledons (i.e. the narrow side).
First pair of leaves opposite. Leaf blades drawn out into a long acuminate tip at the apex. Leaf blades about 5.5 x 2-2.5 cm. Lateral veins forming loops inside the blade margin. At the tenth leaf stage: leaflet blades ovate-elliptic, apex acuminate-caudate, base obtuse, midrib depressed on the upper surface. Lateral veins forming loops inside the blade margin. Stipules about 1.5-2 mm long, apex fimbriate. Seed germination time 8 to 34 days.