| Dicotyledon | Literature for Dysphania ambrosioides
Wagner et al., 1990, 1999. |
| Amaranthaceae -- The Amaranth, Goosefoot Family | Bibliography |
| Dysphania ambrosioides | |
Common name(s): goosefoot, lamb's quarters, pigweed, Mexican tea, wormseed |
| General Information | ||
|---|---|---|
| Distribution | Native to Mexico, Central and South America, and the West Indies, widely naturalized.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Lana`i, Maui, Hawai`i. |
|
| Habit |
Malodorous annual or perennial herbs; stems erect or ascending, 3-10(-15) dm long, unbranched or paniculately branched, glandular-dotted with yellow glands, sometimes also glandular villous. |
|
| Leaves |
Leaves variable and usually dimorphic, always with numerous small, linear, lanceolate to oblanceolate or spatulate leaves usually 0.5-2 cm long, 0.2-0.6 cm wide, margins entire or sometimes sinuate-dentate, often also with scattered large, well-developed, lanceolate to ovate leaves 2-12 cm long, 0.6-5.5 cm wide, margins sinuate-dentate to pinnatifid, all leaves copiously glandular-dotted, occasionally glands absent, also puberulent to short-villous. |
|
| Flowers |
Flowers usually in dense, terminal or axillary glomerules grouped in slender, elongate spikes, these naked or leafy, sometimes paniculate, or sometimes flowers solitary, subtended by small bracts; calyx ca. 1 mm long, completely enclosing the fruit at maturity, the lobes not keeled, glandular-dotted or sometimes glabrous or short-villous. |
|
| Seeds |
Seed dark brown, horizontal or vertical, 0.6-0.8(-1.2) mm in diameter, margins obtuse. |
|
| Chromosomes |
2n = 16, 32, 36, 48?, 64. |
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