Archive for October, 2013
Spiders, moths, ghosts, and vampires, oh my! Orchids might not normally comes to mind when you think of Halloween, but these fascinating members of the Orchidaceae family have adopted (and adapted) all sorts of creepy-crawly characteristics as strategies to survive. Some are on the list just because of their spooky names or association with human traditions. Smithsonian Gardens has a large collection of almost 8,000 orchids at our greenhouse facilities in Suitland, Maryland. The orchids come out to play once a year for a winter exhibit on the National Mall co-hosted with the United States Botanic Garden.
#10 Brassavola nodosa
Also known as the the “Lady of the Night” or ”Flor de la Noche,” Brassavola nodosa has ghostly white flowers that emit strong a nocturnal fragrance to attract night-pollinating moths.
#9 Mediocalcar decoratum
Mediocalcar deocatum is more cute than creepy, with blooms that resemble Halloween candy corn!
#8 Brassia gireoudiana
Brassia species orchids and hybrids are also known as “spider orchids” due to their Arachnid-like looks. The orchids use visual mimicry to trick spider-parasitizing wasps into spreading their pollen. The wasp mistakes the orchid for a spider and attempts to lay its eggs there on the lip of the flower, taking pollen without even knowing it as it flies off to the next orchid. If it was a real spider, the wasp larvae would devour the spider as their first meal!
#7 Myrmecophila tibicinis
Myrmecophila tibicinis is literally the ant lover (its name means “ant lover”). Its hollow pseudobulbs provide a home for stinging ants. The ants secrete formic acid, which feeds the plant, and act as plant bodyguards in the dry season when thirsty animals are looking for a drink from a nice succulent bulb.
#6 Laelia anceps
This beautiful orchid is native to Mexico and traditionally used to decorate graveyards on for Day of
the Dead (Día de Muertos) festivities.
#5 Bulbophyllum phalaenopsis
Bulbo phalaenopsis is a smelly, carrion fly-pollinated orchid whose fragrance, according to an old taxonomic text, is said to be like the stench of 1,000 dead elephants rotting in the sun.
#4 Aeranthes antennophora
A genus mostly from Madagascar that’s believed to be pollinated by bats looking for moths to eat, which the flowers resemble.
#3 Dendrophylax lindenii
Made famous by the book The Orchid Thief, the Ghost Orchid is a rare orchid found in Florida, Cuba, and some islands in the Caribbean. We have a couple of examples of this leafless epiphyte in our greenhouses.
#2 Bulbophyllum medusae
Named for the most famous female Gorgon of Greek mythology, Bulbophyllum medusae has many bizarre umbels of flowers like a head of snakes.
#1 Dracula vampira
Dracula vampira takes the #1 spooky spot. You might want to bring garlic with you when seeking out this striking pleurothallid orchid with sharply pendant, black striped flowers and a lip like a mushroom.
Here at Smithsonian Gardens we are celebrating American Archives Month throughout October. In August 2013, we participated in the first of a series of pilot projects, funded by the Smithsonian’s Digitization Program Office, to create high resolution images of archival, museum and library collection items at a rapid speed. The pilot project included a week-long open house for Smithsonian staff, fellows, interns, volunteers and contractors, to showcase the rapid digitizating of over 900 historic glass-plate negatives from the Thomas Sears Collection at the Archives of American Gardens. The open house demonstrated all stages of digitizating a glass-plate negative collection, from moving each fragile plate in a custom carrier, capturing it, and performing quality control on the resulting image, to making the digitized output accessible to the public online. The overall process involved an outside contractor performing the image capture and image processing and two staff members from the Archives of American Gardens prepping the images, handling the glass-plate negatives, ingesting the images into the Smithsonian’s Digital Asset Management System and linking them to pre-existing catalog records in the Smithsonian’s online catalog, SIRIS.
The 8×10 negatives, which had previously been digitized in the 1990s on a video disc at 640 pixels on the image’s longest side, were obviously pixelated in SIRIS. New scans of the negatives created by the vendor through rapid capture were digitized with an 80 megapixel camera. The quality of the new scans, measured at roughly 10,000 pixels on the longest side, ensures that the Archives will likely never have to scan the glass plates again. Rapid capture is not new, but the tools to measure the quality that can be achieved through rapid digitization are. For any large scale digitization projects of like materials, the Archives of American Gardens hopes to secure funding to digitize archival images through the rapid capture process instead of its current method of digitizing on a flatbed scanner.
To put it into concrete terms, the time that it takes to scan one image on a flatbed scanner is roughly 12 to 15 minutes. To digitize one image using rapid capture, it takes less than one minute. Rapid capture has opened our eyes to a highly efficient method that enables an entire collection to be digitized in a quantifiable time frame. The piece of the puzzle that remains to be addressed is the time-intensive process of cataloging that is needed to make the collections readily searchable online.
Background on Thomas Sears
Thomas Sears graduated with a degree in landscape architecture from Harvard University’s Lawrence Scientific School in 1906, where he also studied photography. He worked for Olmsted Brothers Landscape Architects in the 1910s out of their Brookline, Massachusetts office before establishing his own landscape design office.
A set of images scanned during the rapid capture digitization project included the Edgewood estate in Baltimore, Maryland, photographed by Thomas Sears and designed by Sears and Wendell of Philadelphia.
Learn more about the Thomas Sears Collection.
Click here to learn more about the Archives of American Gardens.
-Kelly Crawford, Museum Specialist
As parents, teachers, and students wrap up the first couple of months of the new school year. Smithsonian Gardens horticulturist Christine Price-Abelow thought it would be fun to highlight a few plants with names linked to education. Keep an eye out for these plants growing in the museum gardens on your next class field trip!
1. Chinese Scholar-tree (Sophora japonica)
Chinese Scholar-tree is also known as the Japanese Pagodatree. In its native country of China the Scholar–tree was often planted near Buddhist shrines, hence the name. However it is commonly used as a city or street tree in the United States. It has a moderate to fast growth rate and usually reaches a height of 40-60’ with a nice rounded crown. Sophora trees have a compound leaf which casts a light shade and they are very tolerant to heat, drought and pollution. They produce creamy white flowers in mid-July followed by a pod type fruit. This “educational” tree can be found on the west side of the National Air and Space Museum near the McDonald’s trailer and seating area.
2. Princeton Elm (Ulmus americana ‘Princeton’)
The next time you visit Smithsonian Gardens and the National Mall, be sure to look up at the large towering trees shading the walkways. A large percentage of this tree canopy is made up of American elms, specifically the ‘Princeton’ American Elm. As you know, most plant cultivars are named for people and places and the ever popular Princeton elm is no exception. The Princeton elm was first introduced in 1922 by William Flemer of Princeton Nurseries located near Princeton, New Jersey. The Princeton elm was originally selected for its resistance to Dutch elm disease and aesthetic beauty. There are many examples of the Princeton elm planted throughout the U.S. and they can be genetically linked to a 200+ year old American elm tree formerly growing at Princeton Cemetery near Princeton University.
American elms have a beautiful yellow fall color and make excellent shade trees. They are fast growing and reach a height of about 80’ with a spread of 50-60’. The Princeton cultivar is known for its disease resistance and large dark green leaves. They are also a great choice for urban landscapes. Plant your own piece of history!
Smithsonian Gardens is using Ulmus Americana ‘Princeton’ as a street tree and in the tree box planters surrounding the museums.
3. Pencil Cactus (Euphorbia tirucalli)
In keeping with our “Back to School” theme, our next featured plant is the pencil cactus. Though often referred to as a cactus, this plant is actually a succulent and a member of the Euphorbia family. The pencil cactus is native to Africa and India, therefore it is grown as a seasonal tropical plant or a houseplant in the Washington, D.C. area. This euphorbia’s distinctive round, rod-shaped branches that resemble the familiar school implement give the plant its nickname. They are very easy to grow and can be propagated by cuttings.
*A note of caution, you should always wear gloves when working around this plant; it exudes a milky, latex-type sap that can cause an allergic skin reaction for some people.
This plant can be found growing in a large container in the Ripley Garden.
-Christine Abelow-Price, Smithsonian Gardens Horticulturist