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Journals and Conferences
My objective is the examination of selective forces that affect pollen number. Relationships among other floral traits of animalpollinated plants, including pollen size, stigma area and depth, and… (More)
I examine data and review information in the literature to test hypotheses proposed by Delpino and Darwin to explain the source of nutrients utilized by pollen tubes. In 1867, Delpino, in his… (More)
Tigridia durangense, T. chiapensis, andT. huajuapanensis are described as new. The first species is known from llanos near La Ciudad and El Salto, Durango ; the second from the highlands of central… (More)
Rigidella and the four species contained therein are defined primarily on characters related to, and a direct consequence of, adaptation to hummingbird pollination. The genus is probably derived from… (More)
Erythrina breviflora is visited by large numbers of passerine birds of which orioles (Icterus: Icteridae) are the primary pollinators. The flowers produce large quantities of nectar but they are… (More)
Isidrogalvia longiflora, a new combination based onAsagraea longiflora, is proposed. It is the first record ofIsidrogalvia from Bolivia.
A robust, yellow-floweredNemastylis from the state of Colima, Mexico, is described as new.
A new genus is proposed for plants heretofore included in Nemastylis latifolia Weatherby. Sessilanthera is related to Tigridia, Rigidella, and Fosteria in tribe Tigrideae.
A comparison of three heretofore undescribed species with the previously known species inTigridia subgen.Hydrotaenia suggests a realignment of taxa within the various complexes inHydrotaenia. Three… (More)