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Oldenburgia

Less.
Source: 
SSA
Description: 
Low trees or dwarf shrubs with thick stems covered with remains of old leaf bases. Leaves alternate, rosulate at ends of branches, obovate or elliptic, convex above, apex obtuse or subacute, base cuneate but expanded at junction with stem, densely silky-woolly, margin subrevolute; young leaves densely tomentose with projecting and conspicuous veins. Capitula radiate, large, sessile or pedunculate. Involucre ovoid, globose-urceolate or cyathiform; bracts in 4-10 rows, outer shorter than inner. Receptacle flat, epaleate, alveolate. Ray florets female; corolla white, bilabiate, outer lip long, strap-shaped or tripartite, inner lip of 2 delicate, linear, curled lobes; tube cylindrical. Anthers: filaments filiform; stamens lanceolate, without apical appendages, bases sagittate, tailed. Style terete, with very short branches. Disc florets many, regular, tubular, deeply 5-lobed. Stamens as in ray florets but with lanceolate, sterile apices. Gynoecium as in ray florets. Cypselas fusiform, elliptic or linear, glabrous and ribbed or villous. Pappus of 11-30 plumose or barbellate bristles, often of unequal length. x = 9 (polyploidy).
Distribution: 
Species 4, endemic to sthn Afr., southern parts of Western and Eastern Cape.
Classification: 

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