Tropical Plant Research
An International Journal by Society for Tropical Plant Research
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2016, VOLUME 3 ISSUE 3Pages: 681-685
Bidens bachulkarii (Asteraceae-Heliantheae): A new species from Western Ghats, India
D. G. Jagtap* and M. Y. Cholekar
Abstract:
Bidens bachulkarii a new species in Asteraceae (Tribe:Heliantheae) from Western Ghats (Maharashtra and Karnataka), India is described and illustrated. The species is closely related with the Bidens pilosa and Bidens pilosa var. minor. However, it differs in several characters viz., glabrous and ribbed stem, head terminal and axillary in position, tri-lobed, bisexual and fertile ray florets, achenes dimorphic, pappus awns of ray and disc achenes half covered with retrose bristles.
Bidens bachulkarii a new species in Asteraceae (Tribe:Heliantheae) from Western Ghats (Maharashtra and Karnataka), India is described and illustrated. The species is closely related with the Bidens pilosa and Bidens pilosa var. minor. However, it differs in several characters viz., glabrous and ribbed stem, head terminal and axillary in position, tri-lobed, bisexual and fertile ray florets, achenes dimorphic, pappus awns of ray and disc achenes half covered with retrose bristles.
Fig.: Bidens bachulkarii Jagtap & Cholekar: A, Habit; B, Single head; C, Outer involucral bract; D, Inner involucral bract; E, Single ray floret; F, Gynoecium of ray florets; G, Single stamen of ray floret; H, Achene of ray floret; I, Disc floret; J, Gynoecium of disc floret; K, Stamen of disc floret; L, Achene of disc floret
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