Notes
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This species was characterized by Puff & Buchner (1994) in particular by its bilobed stipules with two prolonged lobes, also its medium-sized leaves, well developed calyx lobes, and rather long yellowish brown to dark brown corollas. They reported its distribution as somewhat disjunct, from north-central to south-central Madagascar, with the specimens of each region somewhat different morphologically: they characterized the calyx lobes generally longer, narrower, and less pubescent in the northern populations than the southern. The specimens they cited of this species were not collected recently, and they had very limited information available as to elevational range and habitat details.
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