All posts tagged with botany

The large-leaved kōwhai (Sophora tetraptera) is native to the North Island of Aotearoa New Zealand, where it is widespread and common. While it grows naturally only in Aotearoa, it has been cultivated extensively outside of this range, including as one of a number of New Zealand plants historically introduced into English gardens.

Natural history literature provides a record of such introductions, with many authors remarking on the suitability of Sophora tetraptera—often referring to it under the synonym Edwardsia grandiflora—to the English climate. For example George Loddiges, within his The Botanical Cabinet(1826), remarked that it was “sufficiently hardy to bear our climate, planted against a wall; in very severe frost, a mat should be hung over it.” Two decades later, British writer and botanical authority Jane Wells Webb Loudon included the plant in herThe Ladies’ Flower-Garden of Ornamental Greenhouse Plants (1848), where she noted that the original plant could still be found growing in Chelsea Garden in 1848.

Loddiges’ and Loudon’s references are just two of many sources related to the history of Sophora tetraptera that Mark Laird (Professor, John H. Daniels Faculty of Architecture, Landscape, and Design, University of Toronto) identified thanks to the Biodiversity Heritage Library (BHL) whilst conducting research for a prospective book. One of the book’s chapters explores a variety of New Zealand plants introduced into English gardens from the 1770s to 1840s, in the context of both Kew’s colonial collecting and Māori heritage. BHL was an invaluable resource for this research—especially during the COVID-19 related lockdowns of 2020.

On 30 April 2021, join the Chicago Botanic Garden’s Lenhardt Library and the Caxton Club for a free, virtual symposium celebrating the Language of Flowers—a popular literary trend in the 19th century that presented the world of botany through dictionaries of flowers and associated meanings, floral poetry and prose, offering a sentimental view of natural history.

The pineapple, indigenous to South America and domesticated and harvested there for centuries, was a late comer to Europe. The fruit followed in its cultivation behind the tomato, corn, potato, and other New World imports. Delicious but challenging and expensive to nurture in chilly climes and irresistible to artists and travelers for its curious structure, the pineapple came to represent many things. For Europeans, it was first a symbol of exoticism, power, and wealth, but it was also an emblem of colonialism, weighted with connections to plantation slavery.

Originating from the region around the Paraná and Paraguay Rivers (present-day Brazil, Paraguay, and Argentina), it was an important economic plant in the development of Indigenous civilizations in the Americas. The Tupi-Guarani and Carib peoples called the fruit, a staple crop, nanas (excellent fruit) and several varieties were grown. As well as food, the pineapple was a source of medicine, fermented to become alcohol, its fibers made into robes and bow strings and thread for cloth.

The Language of Flowers genre is at the intersection of botany, horticulture, natural history, art, poetry, and women’s studies. This popular literary trend in the 19th century, presented the world of botany through dictionaries of flowers and associated meanings, floral poetry and prose, offering a sentimental view of natural history. A properly arranged bouquet was said to convey a “secret message” for the recipient. The “social media” of its day, this Victorian fad, led to many editions of works published, with multiple titles by successful authors.

Frances Sargent Osgood edited two works in this genre, Poetry of Flowers and Flowers of Poetry and The Floral Offering.

On 5 June 1834, avid amateur botanist Hardy Bryan Croom wrote a letter to botanist John Torrey describing a gymnosperm tree in northern Florida that he was struggling to identify. In this letter, he postulated—with some degree of confidence—that the tree was Taxus baccata, the common yew, and he hoped to acquire some specimens to send to Torrey for investigation.

Torrey was one of the most important 19th century botanists in America. He corresponded with hundreds of scientists in North America and Europe, many of whom sent him specimens from their various explorations for study and identification. As such a well-respected expert and advisor on botanical science, it comes as no surprise that Croom sought Torrey’s expertise regarding this mysterious Florida tree.

The next year, in a letter dated 18 November 1835, Croom wrote again to Torrey, stating:

“The letter which I wrote last summer has had the effect to procure me some perfect fruit of that remarkable Taxoid tree at Aspalaga. The result surprises me. It is an ovate one celled nut entirely enclosed in fleshy covering! as large as a pigeon’s egg! Calix imbricated; thus agreeing neither with Taxus nor with Podocarpus. Besides, the tree, I think, is dioecious, but of this I am not yet certain. What will you do with it? Will it make a new genus?”

The following year, Croom again wrote to Torrey in a letter dated 18 May 1836 that he had determined that the tree represented a new genus. He proposed the genus name Torreya and provided a description and habitat details for “this fine tree,” for which he remarked:

“It is so abundant about Aspalaga (especially on Flat Creek) as to have been sawed into plank and lumber. It is an elegant tree with dark green foliage.”

With this letter, Croom provided the first recorded description of the habitat and abundance of the Florida nutmeg, Torreya taxifolia.

Sadly, Croom and his family drowned in a shipwreck in the Atlantic Ocean near Cape Hatteras on 8 October 1837. As such, Torrey arranged that the new genus and species were formally named and described by botanist George Arnott Walker-Arnott in 1838.

While Croom characterized Torreya taxifolia as abundant in 1836, today the species is critically endangered. With a distribution restricted to the limestone ravines and bluffs along the Apalachicola River in northern Florida and southern Georgia, fewer than a thousand individual trees persist in their native habitat. The most significant threat to the species is continued reproductive failure resulting from fungal pathogens—a threat which is continuing but not well-understood.

Little Lake Valley, located in northern California’s Eel River watershed, is home to several thousand acres of wet meadows and riparian woodlands that are habitat for diverse plants and wildlife, including tule elk, many bird species, and gorgeous spring wildflower displays. A landscape formed when sediments from several creeks filled an intermountain valley bounded by faults, the Valley is also home to two rare plants: the North Coast semaphore grass (state-listed as Threatened) and Baker’s meadowfoam (state-listed as Rare).

“The large lowland wetland ecosystem found in the Little Lake Valley, if not unique, is quite rare,” asserts Dr. Robert E. Preston, a Senior Biologist in the Sacramento office of ICF, an international consulting firm. “Most or all of the small interior valleys of California’s North Coast Ranges were long ago converted to agriculture or were hydrologically altered. Moreover, it supports almost half of the known occurrences of Baker’s meadowfoam, including the largest and most extensive population.”

In November 2016, the California Department of Transportation (Caltrans) completed construction of the Willits Bypass Project, a 5.9-mile long bypass of US Highway 101 in Mendocino County. First proposed in 1957, the controversial project, which crosses a corner of Little Lake Valley, raised a variety of environmental concerns due to its impact on endangered species and state and federally regulated resources [1].

Preston served as the lead botanist for the team that prepared the Project’s Mitigation and Monitoring Plan, which was developed and is being implemented by Caltrans to offset the bypass’ impacts on wetlands and rare plants.

Given their strong association with the area, you might be surprised to learn that there is only one species of palm native to the entire state of California — the California fan palm (Washingtonia filifera), native to the southwestern United States and northwest Mexico. It is one of two recognized species in the genus Washingtonia, the other being the Mexican fan palm (Washingtonia robusta), native to western Sonora and Baja California Sur in northwestern Mexico. Both are among the palm tree species found in L.A., with the Mexican fan palm in particular reaching exceptional heights throughout the city.

Dr. Lorena Villanueva-Almanza, outreach coordinator at the California Botanical Society, specializes in the Washingtonia genus. As a plant taxonomist, her work focuses on understanding plant relationships and the many ways and names under which plants have been described across time — something she is currently engaged in for the Washingtonia. BHL is an invaluable resource for this work.