The secondary veins branch off at intervals from the primary vein The edge of the leaf blade is entire (has no teeth or lobes) The underside of the leaf has no noticeable bloom The base of the leaf blade is cuneate (wedge-shaped, tapers to the base with relatively straight, converging edges), or narrow Opposite: there are two leaves per node along the stem The leaf blade does not have inflated hairs on it The upper side of the leaf is not hairy, or it has very few hairs The underside of the leaf is not hairy, or it has very few hairs The flower has one or more bracts associated with it The floral bracts have a hard and bony or firm and leathery texture The fruits do not have thorn-like defensive structuresįinal leaf segment length (compound lvs only)įinal leaf segment length to width ratio (compound lvs only)įinal leaf segment width (compound lvs only) The plant has axile placentation, in which the ovules are attached where the septa of a compound ovary are united, usually on the central axis, or to the septa themselves The fruit is a schizocarp (when dry it splits into sections, each holding one or more seeds) The fruit is dry but does not split open when ripe The upper lip of the bilabiate corolla has one lobe The stigma protrudes beyond the mouth of the corolla The stamens are not attached to one another The stamens within a cycle differ in length or width The stamens are didynamous (two long stamens and two short ones) The stamens are not attached to the petals or tepals The sepals are fused to each other (not other flower parts), at least near their bases The sepal tip is acuminate (tapers to a very narrow point) The sepal lobes are shorter than the fused portion The sepals do not have appendages on them The sepals are green or brown, and leaf-like in texture There are hairs on the inner/upper petal surfaceĪll the flowers have both carpels and stamens (synoecious) The petals of the flower do not have folds or plaits The petals are thin and delicate, and pigmented (colored other than green or brown) The flower includes two cycles of petal- or sepal-like structures The ovary is above the point of petal and/or sepal attachment
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