Dicotyledon | Literature for Triumfetta semitriloba
Wagner et al., 1999. |
Malvaceae -- The Cacao, Linden, Mallow Family | Bibliography |
Triumfetta semitriloba | |
Common name(s): bur bush, Sacramento bur |
General Information | ||
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Distribution | Native to North America from Baja California and Mexico south to South America and the West Indies.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Maui, Hawai`i. | |
Habit |
Perennial herbs or subshrubs to ca. 5-20 dm tall; stems erect, younger ones densely stellate pubescent, glabrate with age. |
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Leaves |
Leaves variable in shape, usually broadly ovate to lanceolate, 4-20 cm long, 3.5-8 cm wide, usually slightly 3-lobed, 3-nerved from base, stellate pubescent, more densely so on lower surface, margins irregularly serrate-dentate, apex acuminate, base very broadly cuneate to truncate, rarely subcordate, petioles 1.5-6 cm long. |
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Flowers |
Sepals linear, 4-7 mm long, apex with a filiform subapical appendage; petals yellow, narrowly oblanceolate, 3.5-6.5 mm long; stamens 15-20. |
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Fruit |
Capsules globose, indehiscent, 4-5 mm in diameter, puberulent, glabrate with age, covered with retrorsely setose, hooked bristles. |
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Chromosomes |
2n= 32 |
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