Contains 8 genera and 19 accepted taxa overall.
This family is completely databased for all specimens.
Characteristics
URTICACEAE
Dicot
-
Classification
ROSALES
URTICACEAE
Identification Key
1. Trees; leaf blades palmately lobed
1. Herbs to shrubs; leaf blades unlobed
2
2. Leaves mostly opposite, sometimes solitary at a fertile node
3
2. Leaves alternate
7
3. Plant with stinging trichomes with a distinct bulbous base and translucent apex
3. Plant without stinging trichomes
4
4. Leaf blades entire
5
4. Leaf blades toothed
6
5. Leaf blades <1 cm long
5. Leaf blades 1-6 cm long
6. Petiole 0.1-0.5 times as long as the leaf blade; inflorescence spiciform with separated dense glomerules
6. Petiole 0.3-1.2 times as long as the leaf blade; inflorescence short and dense or paniculate
7. Leaf blades dentate to serrate
8
7. Leaf blades entire
9
8. Plant without stinging and without glandular trichomes; leaf blade lower surface densely white tomentose; inflorescence spiciform with separated dense glomerules
8. Plant often with stinging and stipitate-glandular trichomes; leaf blade lower surface sparsely to densely pubescent, not white tomentose; inflorescence paniculate with
9. Root tuberous; petiole 0.1-0.3 as long as the leaf blade; sepals connate, appressed and enclosing the achene
9. Rhizomatous, stoloniferous, or fibrous-rooted; petiole 0.3-1.2 times as long as the leaf blade; sepals free or basally connate, loosely enclosing the achene
10
10. Leaf blades mostly 8-60 mm long; stigma short, penicillate
10. Leaf blades <8 mm long; stigma long, filiform