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Jacaranda micrantha

Flower detail and a more accurate colour cast than the previous images

 

This plant has been incorrectly identified in Australia as Jacaranda semiserrata (a synonym of J. puberula)

 

KEY STEPS (from Flora Neotropica: Bignoniaceae - Part II ( tribe Tecomeae) 25 (2): 1-130 Gentry, A. H. 1992) Jacaranda

 

1 Anthers 1-thecate (Section Monolobos)

 

1* Anthers 2-thecate (Section Dilobos) – go to 24

www.flickr.com/photos/66907012@N03/6565768799/in/photostream

 

24 Leaves simple or simply pinnate

 

24* Leaves bipinnate – go to 35

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35 Leaf rachis distinctly winged

 

35* Leaf rachis usually canaliculate – go to 38

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38 Leaflets coriaceous or distinctly pubescent or both; if glabrous then inflorescence

puberulous -go to 39

www.flickr.com/photos/66907012@N03/6566078449/in/photostream

 

38* Leaflets and inflorescence glabrous or essentially so

 

39 Leaflet underside densely pubescent usually with rather long whitish trichomes

 

39* Leaflets glabrous or pubescent with short trichomes, usually only slightly puberulous along the main veins below or in the secondary vein axils – go to 43

www.flickr.com/photos/66907012@N03/6566530803/in/photostream

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43 Leaflets strongly asymmetrical (half ovate/half obovate), entire or with a few irregular teeth on one side – go to 44

www.flickr.com/photos/66907012@N03/6566563157/in/photostream

 

43* Leaflets symmetrically rhomboid to elliptic, if asymmetric then lanceolate; mostly regularly toothed

 

44 Leaflets coriaceous, slightly puberulous on secondary veins below; inflorescence rather sparsely and interruptedly branched; corolla lobes frilly

 

44* Leaflets membranaceous, puberulous on secondary veins below; inflorescence a simple non-interrupted panicle; corolla lobes entire - go to 45

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45 . Capsule strongly undulate margined; corolla (where known) <5 cm long and 1.2 cm wide at mouth of tube; leaflets slightly bullate or not - go to 46

www.flickr.com/photos/66907012@N03/6566713177/in/photostream

www.flickr.com/photos/66907012@N03/6566674761/in/photostream

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45* Capsule not undulate-margined; corolla 5-6.5 cm long, > 1.3 cm wide at mouth of tube; mature leaflets slightly bullate

 

46 Leaves with 4-8 pinnae pairs; leaflets slightly bullate above, <3.5 cm long

 

46* Leaves usually with 7-9 pinnae pairs; leaflets smooth above, mostly 3.5 cm long – J. micrantha

www.flickr.com/photos/66907012@N03/6467350579/in/photostream

 

Also in J. micrantha the corolla is “glabrous outside except for sessile and subsessile glandular trichomes, the lobes somewhat ciliate" (Gentry)

www.flickr.com/photos/66907012@N03/6566079513/in/photostream

 

 

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Uploaded on December 6, 2011
Taken on December 6, 2011