Hastate. Like an arrow-head, but with the basal lobes pointing outward nearly at right angles.
Head. A dense cluster of sessile or nearly sessile flowers on a very short axis or receptacle.
Heart-shaped. Ovate with a sinus at base.
Herb. A plant with no persistent woody stem above ground.
Herbaceous. Having the characters of an herb; leaf-like in color and texture.
Heterocarpous. Producing more than one kind of fruit.
Heterogamous. Bearing two kinds of flowers.
Hilum. The scar or point of attachment of the seed.
Hirsute. Pubescent with rather coarse or stiff hairs.
Hispid. Beset with rigid or bristly hairs or with bristles.