The stalk of a single flower in an inflorescence.Ī stalk that supports an inflorescence composed of 1 or more flowers. Dreiling, North American Moth Photographers Group. Living on, and deriving nutrients from, another organism (usually to the disadvantage of the host). With veins that run side-by-side at the same angle and do not converge, often arranged parallel to the midvein of the leaf blade.Ī compound leaf in which all the leaflets are paired, with no terminal leaflet (compare with imparapinnate). Palmedes Swallowtail, photo ©Sturgis McKeever, Georgia Southern University, .īlack Swallowtail, photo ©Herman GiethoornĪ series of scales, hairs or bristles surrounding the tip of the achene in Asteraceae. Shaped like a pea-flower, with an upright banner petal, two lateral wing petals, and two lower petals fused into a keel. With projections that radiate from a common point, as fingers in a hand.įiddle-shaped (constricted in the middle).Ī branched, indeterminate flower cluster (inflorescence) with individual flowers on stalks (pedicels).Įastern Tiger Swallowtail, photo ©Herman Giethoorn With parts radiating from a common point, like fingers of a hand.Ī leaf comprised of separate leaflets that radiate from a common point, like parts of a fan. In grasses (Poaceae), the inner of the two bracts enclosing the floret in composites (Asteraceae), the chaff (bracts) of the disk florets of the receptacle. ![]() ![]() A raised area on a lower lip of a two-lipped corolla that obscures or blocks the mouth.
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