Sagehen Creek Field Station

28 Apr, 12 PM - 30 Aug, 04 PM

Calyptridium is a genus of plants common in montane regions across the west coast of North America, often seen growing in disturbed areas along paths or in open clearings with sandy soils. Two species in particular (C. monospermum and C. umbellatum) are especially well known for vertically raising their peduncle (the main stalk of the compound inflorescence) throughout the day. Calyptridium monospermum plants raise their peduncles in the middle of the day when in full sun and rest them on the ground in the shade or night (Osleger, unpublished data). Despite the notability of these species’ movements by hikers and botanists alike, neither the main stimulus for this action nor its effect on plant fitness have been investigated. We plan to conduct a series of studies that will determine both the stimulus for inflorescence movement in C. monospermum, and how this action may affect fitness. We will perform two longer term studies throughout the species’ flowering phenology. The first will identify whether temperature, light or humidity has the largest effect on peduncle angle. The second will measure the effect of light availability and peduncle angle on plant fitness. We will also conduct a shorter term pollination study to identify how inflorescence movement may relate to increased pollination under certain environmental conditions.

Visit #70924 @Sagehen Creek Field Station

Approved

Under Project # 46247 | Research

How and Why Pussy Paws Raise their Flowers

undergraduate_student - University of California, Santa Cruz

Reservation Members(s)

Alex Osleger Apr 28 - 27, 2021 (0 days)
Alex Osleger May 10, 2021 (1 days)
Alex Osleger May 12 - 11, 2021 (0 days)
Alex Osleger May 13 - 12, 2021 (0 days)
Alex Osleger Jun 20, 2021 (1 days)
Alex Osleger Jun 21, 2021 (1 days)
Alex Osleger Jun 22, 2021 (1 days)
Alex Osleger Jun 24 - 23, 2021 (0 days)
Alex Osleger Jun 27 - 26, 2021 (0 days)
Alex Osleger Jun 28 - 27, 2021 (0 days)
Alex Osleger Jun 29, 2021 (1 days)
Alex Osleger Jun 30 - 29, 2021 (0 days)
Caroline Salveson Jun 30 - 29, 2021 (0 days)
Alex Osleger Jul 25, 2021 (1 days)
Alex Osleger Jul 26, 2021 (1 days)
Alex Osleger Jul 27, 2021 (1 days)
Alex Osleger Jul 28, 2021 (1 days)
Alex Osleger Jul 29, 2021 (1 days)
Alex Osleger Jul 30, 2021 (1 days)
Alex Osleger Jul 31, 2021 (1 days)
Alex Osleger Aug 29, 2021 (1 days)
Alex Osleger Jul 30 - Aug 30, 2021 (32 days)

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Day Use (suggested) 1 Apr 24 - Aug 31, 2021
Sagehen Data 1 Apr 24 - Aug 31, 2021