| Dicotyledon | Literature for Stachys arvensis
Wagner et al., 1990, 1999. |
| Lamiaceae -- The Mint Family | Bibliography |
| Stachys arvensis | |
Common name(s): hedge nettle, staggerweed |
| General Information | ||
|---|---|---|
| Distribution | Native to Europe and Asia, widely naturalized.In the Hawaiian Islands, naturalized on Midway, Ni`ihau, Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Kaho`olawe, Hawai`i. | |
| Habit |
Stems decumbent to ascending, many-branched, 2-6 dm long, hirsute. |
|
| Leaves |
Leaves ovate to narrowly ovate, 1-3.5(-6) cm long, 0.6-2.3(-3.5) cm wide, hirsute, more densely so along veins on lower surface, margins crenate, apex rounded, base truncate to subcordate, petioles 0-2(-3.5) cm long. |
|
| Flowers |
Flowers usually 3-6 in verticillasters, these arranged in terminal, leafy, spike-like inflorescences; calyx usually tinged purple, campanulate, 5-6 mm long, hirsute, especially along nerves, cleft ca. 1/2 its length, the teeth slightly unequal, lanceolate, upper lobes ca. 2.7-2.8 mm long, lower lobe ca. 2.2-2.3 mm long; corolla pink, rose, or blue, 5-7 mm long, upper lip erect, median lobe of lower lip ovate, faintly spotted red near base. |
|
| Fruit |
Nutlets black, shiny, muricate, obovoid, ca. 2 mm long. |
|
| Chromosomes |
2n = 10, 18, 20 |
|