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(Last Modified On 1/22/2013)
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(Last Modified On 1/22/2013)
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Family
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PROTEACEAE
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Contributor
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LORIN I. NEVLING, JR.
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Description
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Trees, shrubs or rarely herbaceous, rarely dioecious. Leaves alternate, rarely opposite or whorled, simple or compound, sometimes heteromorphic, pinnately veined; estipulate. Inflorescence a head, spike or raceme, axillary or terminal, bracteate, the bracts persistent or caducous, subtending 1 to several flowers. Flowers bisexual or unisexual by abortion, monochlamydeous, cyclic, hypogynous, actinomorphic or zygomorphic. Tepals free or variously connate, petalaceous, tetramerous, valvate in bud. Stamens 4, antipetalous, the anthers dehiscing longi- tudinally, the filaments variously adnate to the perianth. Pistil 1, often surrounded basally by glands or a disc, often stipitate, the ovary superior, 1-carpellate, 1-loculate, the ovules 1-many, with 2 integuments, the placentation parietal or the ovules pendulous, the style 1, slender, the stigma 1, lateral or terminal. Fruit a follicle, achene, samara or drupe; seeds lacking endosperm, sometimes winged.
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Habit
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Tree shrub
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Habit
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herb
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Distribution
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A family primarily restricted to the dry regions of the Southern Hemisphere, consisting of about 55 genera and 1200 species of which the majority are Australian and South African. Eight genera are represented in the New World of which two are indigenous to Panama.
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Note
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A number of species are cultivated in numerous parts of Central America for their extremely showy inflorescences. At present I have no evidence of cultivated species in Panama.
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Reference
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revision of the American Proteaceae by Dr. H. Sleumer (in Bot. Jahrb. 76:139-211. 1954).
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Key
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a. Leaves alternate, simple or pinnately compound (heteromorphic), entire or dentate; inflorescences racemes or spikes; disc of 4 hypogynous glands; fruit a follicle, obliquely 2-valved; seeds 2, winged ..................... 1. ROUPALA aa. Leaves alternate, opposite or whorled, simple, entire; inflorescences racemes; disc cupuliform, 4-lobed; fruit indehiscent; seeds 1, exalate ..... 2. PANOPSIS
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