Asa Gray: American Botanist, Friend of Darwin. A. Hunter Dupree

Isis ◽  
1990 ◽  
Vol 81 (2) ◽  
pp. 366-368
Author(s):  
Elizabeth Barnaby Keeney
Keyword(s):  
American Botanist ◽  
Asa Gray

scholarly journals S. W. Williams’ Relations with Asa Gray: Lifelong Friendship, Botany and Sinology

2019 ◽  
Vol 10 (1) ◽  
pp. 55-80
Author(s):  
So Chit-Shing
Keyword(s):  
19Th Century ◽  
Harvard University ◽  
Chinese Descent ◽  
American Botanist ◽  
The 19Th Century ◽  
Asa Gray

Abstract Samuel Wells Williams was a well-known missionary, diplomat and sinologist. In his whole life, he never gave up his pursuit on botany, however, there was not much attention to his botanical accomplishment. Williams had a lifelong friendship with Asa Gray, who was the most distinguished American botanist in the 19th century. And because of the contact, Williams related with botany indeed. In order to figure out their friendship and influence, this article is going to use the correspondences between Williams and Gray, besides the related publications. This article first presents Williams’ lifelong friendship with Gray, then, accounts for the plants and seeds which Williams gave to Gray. Finally, it will demonstrate the influence of Gray towards Williams’ contact with Ko Kun-hua, who was the first professor of Chinese descent at Harvard University.

Asa Gray. American Botanist, Friend of Darwin.

Brittonia ◽  
1989 ◽  
Vol 41 (2) ◽  
pp. 163
Author(s):  
Jeanne Goode ◽  
A. Hunter Dupree
Keyword(s):  
American Botanist ◽  
Asa Gray

Can We Predict Species Invasions?

2013 ◽  
Author(s):  
Daniel Simberloff
Keyword(s):  
19Th Century ◽  
Species Invasions ◽  
American Botanist ◽  
Asa Gray ◽  
Charles Elton

Can we predict which species will become invasive if they are introduced? Asa Gray, the great 19th-century American botanist, contended that impacts of invasions cannot be predicted, and invasion biologists from Charles Elton onward have lamented how hard it is to foresee what a...

Darwin's historical sketch – an American predecessor: C. S. Rafinesque

2010 ◽  
Vol 37 (2) ◽  
pp. 191-202 ◽  
Author(s):  
C. T. Ambrose
Keyword(s):  
New Species ◽  
Biblical Story ◽  
Origin Of Species ◽  
Theory Of Evolution ◽  
American Botanist ◽  
Biological Literature ◽  
Asa Gray ◽  
Historical Sketch

When early reviewers of Darwin's On the origin of species chided him for neglecting to mention predecessors to his theory of evolution, he added an “historical sketch” in later editions. Among the predecessors he cited was a French émigré to America named Constantine Samuel Rafinesque, who in the mid-1830s had written about the emergence of new species at a time when most naturalists (including Darwin initially) accepted the biblical story of creation and assumed the immutability of species. Rafinesque discovered and named thousands of new plants and animals in his American travels and flooded the taxonomic literature with reports, which seemed incomplete, confusing, and excessive to other naturalists. He alienated many who later dismissed his findings and excluded them from the biological literature. Soon after Rafinesque's death in 1840, Asa Gray, the young American botanist, wrote a damning critique of his work and suggested it be ignored. How Darwin learned of Rafinesque and his views on species is the focus of this essay, which also mentions briefly the two other American naturalists cited by Darwin in his sketch. Gray seems the likely informant through his correspondence with Darwin or his close associates.

PREFERENCIA DE Polyphagotarsonemus latus (Banks) (Acari: Tarsonemidae) A LAS HOSPEDANTES: Carica papaya L., Phaseolus acutifolius Asa Gray y Melanthera aspera (Jacq) Small.

2018 ◽  
Vol 11 (12) ◽  
Author(s):  
J. Marroquín-Agreda
Keyword(s):  
Carica Papaya ◽  
Polyphagotarsonemus Latus ◽  
Phaseolus Acutifolius ◽  
Asa Gray

Objetivo: Analizar la preferencia de Polyphagotarsonemus latus a los hospedantes comerciales Papaya (Carica papaya L.) y Fríjol escumite (Phaseolus acutifolius) y Sajan blanco (Melanthera aspera).Diseño/metodología/aproximación: Se utilizó un diseño factorial completamente al azar, con tres tratamientos (hojas de plantas con daño mecánico (carborundum), hojas infestadas con el ácaro y hojas sanas) y 12 repeticiones. Se usaron cajas Petri, donde se depositaron 30 hembras a 5 cm equidistantes a las tres especies de hojas. Las observaciones se realizaron a intervalos de una hora, se registró el número de ácaros y las áreas foliares de las hojas ofrecidas. Las medias se compararon mediante la prueba DMS (0.05). Resultados: El ácaro mostró mayor preferencia al saján blanco y fríjol escumite; la preferencia se incrementó en las hojas dañadas por la herbivoría del mismo ácaro. No existieron diferencias significativas entre las áreas de las hojas en el tratamiento con hojas sanas y condaño mecánico; pero sí en las áreas con daño del acaro. Las hembras de P. latus ovipositaron solamente en hoja de fríjol después de dos días.Limitaciones del estudio/implicaciones: La marchitez precoz del saján blanco puede ser una limitante para analizar las respuestas de repulsión, ya que los experimentos requieren mayor tiempo de observación.Hallazgos/conclusiones: P. latus prefirió más las hojas del saján blanco y el frijol escumite que las hojas de papaya dañadas por la herbivoría. Solo se vio que el limbo de las hojas de papaya se redujo debido a la acción de la herbivoría.

Warren Lambert Wagner ‐ Recipient of the 2015 Asa Gray Award

2016 ◽  
Vol 41 (1) ◽  
pp. 1-2
Author(s):  
Kenneth J. Sytsma
Keyword(s):  
Asa Gray

Lucinda A. McDade—Recipient of the 2019 Asa Gray Award

2020 ◽  
Vol 45 (1) ◽  
pp. 3-5
Author(s):  
Erin A. Tripp
Keyword(s):  
Asa Gray
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