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UPCOMING EVENTS! and Center for Plant Diversity DAVIS BOTANICAL SOCIETY LASTHENIA LASTHENIA, the Newsletter of the Davis Botanical Society, is published in collaboration with the staff of the UC Davis Botanical Conservatory UPCOMING EVENTS! and Center for Plant Diversity. Editor: Kate Mawdsley Issue Contributors: E. Dean, E. San- doval, T. Barry, J. Clary, N. Williams, D. Sat. April 7 Jasper Ridge field trip Burge, S. Sumrall Design: Susan Gloystein Sat. April 21 Picnic Day Herbarium and Conserva- Layout: Ellen Dean tory open houses DBS OFFICERS, 2017-2018 President: Neal Williams Sun. April 29 Arboretum/Conservatory Plant Sale President-elect: Jeffrey Clary Membership Vice President: Thurs. May 3 Spring Meeting and Speaker, Judy Tom Starbuck, Johanna Kwan, & Kate Mawdsley Jernstedt will speak on “Stalking the wild Secretary: Chris Walden Welwitschia” Treasurer: Robert Rhode Past President: Judy Jernstedt Sat. July 14 Bliss State Park field trip Members at Large: Cherilyn Burton, Brenda Grewell Student Member at Large: Ross Brennan Ex officio: Dan Potter, Ernesto Sandoval, Ellen Dean UC Davis Mail ID: BTNY BTNY ID: Mail Davis UC Davis, CA 95616 95616 CA Davis, University of California California of University One Shields Avenue Avenue Shields One Plant Sciences Mail Stop #7 Stop Mail Sciences Plant Center for Plant Diversity Diversity Plant for Center 8 No. 49 Winter 2018 LASTHENIA NEWSLETTER OF THE DAVIS BOTANICAL SOCIETY STEBBINS COLD CANYON RESERVE POST-FIRE: IS RECOVERY IN THE WORKS? A year and a half ago (Lasthenia number Stebbins Cold Canyon Reserve and 46), we published an article by Marcel the surrounding landscape went up in Rejmanek on the effects of the Wragg flames in July of 2015. A roadside ve- Fire on Stebbins Cold Canyon (one year hicular fire quickly leapt from Highway post-fire). We asked Jeffrey Clary, Director 128 up to the thick chaparral vegetation of Stebbins Cold Canyon Reserve and As- covering the west side of the Blue Ridge. sociate Director of the UC Davis Natural Within minutes, flames reached and Reserve System, to follow up on Marcel’s enveloped the UC Davis reserve. article and let our readers know how the The fire was ferociously intense, canyon is recovering. Jeffrey is currently especially along the upper slopes of the president-elect of the Davis Botanical So- Blue Ridge, the hikers’ destination for ciety. More information on Stebbins Cold panoramic views of the Coast Range Carpets of whispering bells in burned Canyon can be found at naturalreserves. and Lake Berryessa. chaparral at Stebbins Cold Canyon, spring 2016. Photo: J. Clary ucdavis.edu. Given the intensity of the fire and After multiple years of historic the extremely low reserve of moisture in revegetation was uncertain. How many drought and searing temperatures, the the soils, the pathway to recovery and of the trees and shrubs in the fire zone were truly dead? Which ones would successfully resprout and reseed? Would THE CONSERVATORY EXPANDS OUTWARD invasive species gain a new foothold in The UC Davis Botanical Con- the area? servatory continues to expand Two and a half years have elapsed and provide as much live plant since the fire, meaning we are in the material for as many courses midst of the third growing season of as possible, both for UC Davis the recovery. Each year, the vegetation and other local colleges (if we has been starkly different from the year can). Sometimes these improve- before. The goal of this article is to track ments are a result of adding some of the big picture changes that we new plants; in other cases, it’s have observed. because we’ve gotten better at continued on page 6 growing or propagating them. In a few cases, it’s because we can now afford biological con- trols to eliminate pesticide use. View of new paths of the Biological Orchard & IN THIS ISSUE Examples follow. Gardens (the BOG) which will provide more sam- Stebbins Cold Canyon .....................1 A couple of years ago, Kyle pling plots for biological sciences students as well Shankle, a graduate student in as heirloom fruit orchards. Photo: E. Sandoval Conservatory Expands Outward ....1 Plant Biology, donated a large Law Family Scholarships .................3 and attractive Dioscorea elephantipes with a stem that regularly appears on social media after tours of the conservatory. Thanks to his donation of a large Darwin Pine Hill Native Bees .......................4 orchid (Angraecum sesquipedale), BIS 2C students this past fall were able to use Hedgerows Pollinators .....................5 live flowers with 1 foot long nectar spurs to examine the plant’s co-evolution Hmong Specimen Exhibit ................7 continued on page 2 1 CONSERVATORY (CONT. FROM PAGE 1) lab building, finally saw the installa- tion of curved concrete paths. The site will provide a real-world opportunity for students to conduct quadrats and/ or transects in field-like conditions rela- tively close to the Sciences Lab Building (SLB). The students will perform their measurements in one of three plots containing South African, Californian, or Mediterranean plants. When possible they will use these plots instead of the three small sampling beds on the east side of the Sciences Laboratory Building, which were first planted in 2008. Other habitats used by BIS 2B in- The Darwin orchid. Photo: E. Sandoval clude: the epiphyte walls in the SLB The cacao plant. Photo: E. Sandoval greenhouse, as well as small planters with the Darwin moth (Xanthopan fea arabica). Marlene Simon, staff horti- with carnivorous plants, succulents, or morganii), using a life-size photo of the culturalist, has facilitated the transition shade plants, Fowling plates brought in moth. This was done as part of one of on these and a number of other plants by 2B staff from Bodega Bay, and an as- six exercises that students present to with the result that when our depart- sortment of terrariums and aquariums. each other during their visit to the Con- ment chair brought multiple classes for These five sets of “habitats” make it servatory. We had enough flowers in the Conservatory tours earlier this quarter, possible for up to five concurrent labs to fall for all 15 groups to do this! we were able to harvest cacao pods (the have 24 students performing measure- This past fall, just after the last fruit of Theobroma cacao) and allow ments in six smaller teams of four to Lasthenia newsletter went to press, we these tourists to sample the sweet and get a very good idea of what it takes to successfully rooted three Amborella tart pulp around the seeds. If they were sample diversity. trichopoda cuttings! These are very so inclined, we felt at ease in encourag- sought-after plants for systematics ing them to sample the bitterness that research into the ancestral lineages of a Central American monkey would flowering plants (as well as courses experience if it were to nibble on the teaching these concepts). Amborella is actual seed. To be able to harvest the quite slow to root, and the cuttings took cacao fruit, we must hand-pollinate the nearly nine months to grow their roots. chocolate tree, and thanks to a number Is this slow rate of growth perhaps due of interns and volunteers we have had a to Amborella’s adaptation to the low steady supply of fruit for the past three light and cool understory of its habitat years. But only now can we confidently in New Caledonia? allow its consumption. As reported in the previous Last- The transition to biological pest henia, the mother plant, a female, is control, predatory insects that either now growing quite well in Room A of consume or parasitize pest insects such the Conservatory, so we’ll take many as aphids, mealy bugs, and mites, has Ernesto Sandoval with rooted Amborella more cuttings this spring in hopes of cutting. Photo: S. Sumrall been made possible by funding sources having enough specimens to guarantee that are vital to the continuation of the live plants positioned at the base of This spring and summer we’ll be Botanical Conservatory. The Conserva- the angiosperms branch on the Tree of installing the irrigation at the BOG, and tory has continued to fulfill and expand Life demonstration for BIS 2C, where immediately afterward plants will be put our mission to provide as much live students literally stand amongst the in of all sorts and sizes, some moved plant material for UC Davis and beyond branches of an evolutionary tree of from the smaller SLB planting beds, to by expanding outdoors (the greenhouses plants. Ernesto took the opportunity be ready for fall quarter’s five concurrent have both environmental and physical this past fall to take some high quality labs. The BOG project was started in restrictions). This is all made possible macro photographs of the flowers, now 2012 and, thanks to a variety of recent through our connection to our users available to educators. donations, BIS 2B lab fees, and endow- and continued generous donations that We’re also literally paving the paths ment funds, we’ve been able to fund this support our efforts. We, the staff of the for increased capacity of the Botani- major expansion. Botanical Conservatory, are the care- cal Conservatory to provide live plant Also thanks to the same funding takers of this wonderful assortment of materials, in this case for BIS 2B lab 1, sources, we’ve made a major transition plants that we have the pleasure of shar- where students perform rapid biodiversity this past year away from pesticide use ing in a multitude of ways, and we are assessments in one of several “habitats.” on popular plants in the Conservatory thankful for your help in realizing these This February, the Biological Orchard and such as cacao (aka the chocolate tree, ever-growing goals.
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