Orobanche cumana in situ A, bract and calyx, 1-bract, 6 & 7-calyx lobes, 2 & 4-anterolateral segments of calyx lobes, 3 & 5-posterolateral segments of calyx lobes, 8-point of attachment with stem; B, pollinator Ceratina simillima visiting the flower; C, plant in its habitat, with non-host Artemisia vestita growing in proximity on right side and its young host plant of A. japonica on left side (indicated by arrow). [Images by Ashutosh Sharma]

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Orobanche cumana (Orobanchaceae), an addition to the flora of India from Himachal Pradesh (Western Himalaya) with a new host record

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Jun 2021

Orobanche cumana Wallroth, collected from lower Kullu Valley of Himachal Pradesh in Western Himalaya, is reported here as a new record for the flora of India with Artemisia japonica Thunberg as a host recorded for the first time. This is a distinct species widely distributed from Eastern Europe to Siberia and Western and Northern China but yet unre...

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... with the host invariably being Artemisia japonica. Repeated and careful observations of the population revealed that in spite of presence of three more Artemisia species, viz. A. vestita, A. nilagirica, and A. scoparia in the same locality and soil, it has been seen to establish connection with the roots of its specific host (A. japonica) only (Fig. 3). Further, it is noteworthy that its confirmed host species, A. japonica, has not been recorded as host of any Orobanche species till now (Sánchez Pedraja et al., ...

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