Mohavea |
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mohavea |
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Habit | Herbs, annual. | ||||
Stems | erect or ascending, filiform, twining branches absent, densely glandular-villous. |
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Leaves | cauline, opposite proximally, alternate distally; petiole present; blade fleshy, not leathery, margins entire. |
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Inflorescences | axillary, flowers solitary; bracts absent. |
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Pedicels | present; bracteoles absent. |
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Flowers | bisexual; sepals 5, basally connate, calyx bilaterally symmetric, cupulate, lobes lanceolate, adaxial largest; corolla yellow or white, bilaterally symmetric, bilabiate, tubular, tube base usually gibbous abaxially, not spurred, lobes 5, abaxial 3, adaxial 2, palate partially blocking mouth; stamens 2, basally adnate to corolla, filaments glabrous or sparsely hairy, pollen sacs 1 per filament; staminodes 2 or 3, linear, adaxial minute or absent; ovary 2-locular, placentation axile; stigma punctiform. |
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Fruits | capsules, locules equal, dehiscence poricidal. |
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Seeds | 20–50, dark brown to black, oblong, wings present, abaxial, cupulate. |
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x | = 15. |
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Mohavea |
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Distribution |
sw United States; nw Mexico |
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Discussion | Species 2 (2 in the flora). Mohavea is similar to Pseudorontium, which also has asymmetric, winged seeds. Seeds of Mohavea are notched at the proximal end. Plants of the genus can be distinguished from others in Antirrhineae by their relatively large, acute or obtuse corolla lobes, more or less radially symmetric fruits, and two fertile anthers, each with a single pollen sac. R. K. Oyama and D. A. Baum (2004) and M. Fernández-Mazuecos et al. (2013) found evidence that Mohavea nests among species treated in Sairocarpus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 17, p. 37. | ||||
Parent taxa | |||||
Subordinate taxa | |||||
Name authority | A. Gray: in War Department [U.S.], Pacif. Railr. Rep. 4(5): 122. (1857) | ||||
Web links |