| General Information |
| Distribution | Native from Mexico south to Brazil and Peru.In the Hawaiian Islands,
naturalized on
Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.
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Habit
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Annual herbs 1-8 dm tall; stems erect, unbranched or occasionally sparingly branched usually above the middle, villous and glandular pubescent to hirsute.
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Leaves
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Leaves often early deciduous, lanceolate to oblanceolate or linear-elliptic, 1-6 cm long, 0.3-1.5 cm wide, conspicuously 3-nerved from the base, puberulent and also sparsely hirtellous, especially along the veins, margins entire, apex acute to broadly acute, base attenuate.
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Flowers
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Flowers in dense spikes, these elongating so that older flowers are widely spaced, bracts leaf-like, narrowly lanceolate to oblong, lower ones green, upper ones tipped with red, orange, or occasionally yellow; calyx 10-12 mm long, tomentose and usually glandular puberulent; corolla greenish, ca. 10 mm long, usually slightly shorter than calyx, the hood puberulent, lower lip minute, ca. 1 mm long; stigma 2-lobed.
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Fruit
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Capsules globose-obovoid, 5-6 mm long, rupturing the calyces as they expand, base oblique.
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Seeds
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Seeds slightly irregular, usually cuneate, 0.7-1 mm long.
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Chromosomes
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2n = 24
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