Mac H. Alford

Mac H. Alford
University of Southern Mississippi | USM · School of Biological Environmental and Earth Sciences

PhD

About

37
Publications
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314
Citations
Introduction
Mac H. Alford currently works in the School of Biological, Environmental, and Earth Sciences at the University of Southern Mississippi. Mac does research in Botany, Evolutionary Biology and Systematics (Taxonomy). His most recent publication is 'Multilayered structure of tension wood cell walls in Salicaceae sensu lato and its taxonomic significance'.

Publications

Publications (37)
Article
Full-text available
New information is provided on the close dates of publication of the two generic names, Osmelia Thwaites (Nov 1858) and Stachycrater Turcz. (Sep-Oct 1858). We propose to conserve the name Osmelia against Stachycrater under Art. 14 of the ICN because we think that decision would best serve nomenclatural stability and would allow continued usage of t...
Article
Full-text available
Iran, with its unique climatic and topographic conditions, is home to about 8200 species of vascular plants. Approximately 2300 of the 8200 species are popularly characterized as medicinal or aromatic. Here, we compile information about the endemic medicinal and aromatic plants (MAPs) of Iran and map their distributions. Our survey found 180 endemi...
Article
The circumscription of species and subsequent classification into genera were reassessed for Ophiobotrys, Osmelia, and Pseudosmelia, three closely related genera of Old World Samydaceae (Salicaceae sensu lato). Phylogenetic analyses of plastid DNA data were performed and affirm the placement of these genera in Samydaceae, and a phylogenetic analysi...
Article
Longleaf pine (Pinus palustris Mill.) ecosystems exhibit high species diversity and are major contributors to the extraordinary levels of regional biodiversity and endemism found in the North American Coastal Plain Province. These forests require frequent fire return intervals (every 2–3 years) to maintain this rich diversity. In 2009, a floristic...
Article
Nomenclatural changes are presented here to bring generic circumscriptions in line with recent advances in the understanding of phylogenetic relationships within Samydaceae and with the conservation of the name Casearia Jacq. over Samyda Jacq. and Laetia Loefl. ex L. Names of species formerly recognized in Hecatostemon S. F. Blake, Laetia sect. Lae...
Article
Full-text available
Gamochaeta (tribe Gnaphalieae, Asteraceae) is composed of ca. 60 species primarily distributed in tropical and subtropical America. Within the tribe Gnaphalieae, the genus is characterized by capitula arranged in spikes or head-like clusters, few hermaphroditic central florets, truncate style branches with apical sweeping trichomes, pappus bristles...
Article
Salicaceae have been enlarged to include a majority of the species formerly placed in the polyphyletic tropical Flacourtiaceae. Several studies have reported a peculiar and infrequently formed multilayered structure of tension wood in four of the tropical genera. Tension wood is a tissue produced by trees to restore their vertical orientation and m...
Article
Full-text available
A survey to document the vascular flora of the Gopher Farm sandhill, Wayne County, Mississippi, was conducted from 2011 to 2015. As a part of the Chickasawhay Ranger District of the DeSoto National Forest, the Gopher Farm represents one of the most northerly sandhills in the Coastal Plain of Mississippi and one the largest publicly owned sandhills...
Article
Full-text available
Irenodendron (Samydaceae), a new genus for three species of shrubs and trees from South America, is described. Previously recognized as members of Laetia section Scypholaetia, these species (I. coriaceum, I. cupulatum, and I. ovalifolium) differ from Laetia sensu stricto in having cupular bracts, an apically divided style, and large rays in the woo...
Article
Full-text available
A new species of Casearia (Samydaceae), C. draganae M.H. Alford, from lowland rainforest of the Pacific basin of Colombia and Ecuador is described and illustrated. The new species is vegetatively similar to Casearia fasciculata (Ruiz & Pav.) Sleumer but differs in petiole length, distribution of pellucid-punctations in the lamina, flower size, ovar...
Article
A recent taxonomic revision of the Neotropical catfish genus Rhamdia (Pisces: Siluriformes: Heptapteridae) reduced a number of described species to synonymy, especially under a broadly circumscribed R. quelen. Evidence is presented here from DNA sequence data, external morphology, and morphometrics that argues for the recognition of R. guatemalensi...
Poster
http://www.2014.botanyconference.org/engine/search/index.php?func=detail&aid=462.
Article
Full-text available
Monographs are fundamental for progress in systematic botany. They are the vehicles for circumscribing and naming taxa, determining distributions and ecology, assessing relationships for formal classification, and interpreting long-term and short-term dimensions of the evolutionary process. Despite their importance, fewer monographs are now being p...
Article
Monographs are fundamental for progress in systematic botany. They are the vehicles for circumscribing and naming taxa, determining distributions and ecology, assessing relationships for formal classification, and interpreting long–term and short–term dimensions of the evolutionary process. Despite their importance, fewer monographs are now being p...
Article
Full-text available
• Premise of the study: PCR amplification of DNA extracted from plants is sometimes difficult due to the presence of inhibitory compounds. An effective method to overcome the inhibitory effect of compounds that contaminate DNA from difficult plant specimens is needed. • Methods and Results: The effectiveness of a PCR additive reagent containing tre...
Article
Full-text available
Macrothumia M. H. Alford é descrito como um novo gênero de Salicaceae, com base em Neosprucea kuhlmannii Sleumer do Brasil. O perianto decíduo, as papilas nos dentes das folhas, a presença de discos glândulares receptaculares e a análise de dados de DNA do plastídeo sugerem que o novo gênero é mais proximamente relacionado a Ahernia Merrill e Pleur...
Article
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Sequence data from the matK gene, the trnK group II intron, the trnL group I intron and the trnL-F spacer were analysed for a broad sampling of the rosids and other eudicots. For the first time all putative genera of Dipentodontaceae and Tapisciaceae (Dipentodon, Huertea, Perrottetia, Tapiscia), as well as the recently described Gerrardinaceae were...
Article
The neotropical genus Neosprucea (Salicaceae), formerly included in Flacourtiaceae, comprises nine species of trees. Its range extends from Panama to Guyana and to southern Peru. Data on morphology, wood anatomy, pollen, and geographical distribution are presented. Morphological and molecular analyses were used to assess relationships among the spe...
Article
Full-text available
A new family of flowering plants, Gerrardinaceae M. H. Alford, is created for Gerrardina Oliver, an African genus of two species formerly allied to tribe Homalieae of Flacourtiaceae. Unlike Homalieae, now placed in Salicaceae s.l. (Malpighiales), Gerrardina has cunonioid leaf teeth, a cupular receptacular disk, introrse anther dehiscence, and apica...
Article
Full-text available
Hasseltia allenii is described as a new species from the Pacific drainage of Costa Rica and Panama. It differs from other species ofHasseltia in its long petioles, ovate leaf shape, and glabrous staminal filaments. Data on its morphology, wood anatomy, pollen, and geographical distribution are presented, and a key is privided to distinguish the new...
Article
Full-text available
Pineda is a small neotropical genus of Salicaceae found in high altitude, semi-arid scrub of Bolivia, Ecuador, and Peru. One northerly species, Pineda incana Ruiz & Pavón, is recognized, and a new species from Bolivia, Pineda ovata M. H. Alford & Zmarzty, is described. The two allopatric species are distinguished by leaf shape, sepal size, and freq...
Article
Full-text available
Thesis (Ph.D.)--Cornell University, January 2005. Includes bibliographical references (leaf 290).
Article
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A survey to document the vascular plan ts of Amite County, Mississippi, was conducted from 1997 to 2000. Occupying 732 square miles, the county lies along an edaphic and physiographic transition zone from loess in the west to sandy loam and gravel in the east. Species composition changes with the gradient, and the county serves as a westernmost lim...
Article
Commelina polhillii Faden &- Alford, a new annual species of Commelina with buff-orange flowers. is described from Tanzania. It differs from the similar C. subulata primarily in seed morphology. However, staminode shape, the presence of basal lobes on the medial anther connective, and differences in spathe pubescence also serve to varying extent to...
Article
Full-text available
SUMMARY Conjunctivitis is a condition that can be viral, bacterial, or allergic in origin. The tissue surrounding the eyes becomes inflamed and irritated and the eyes become red and watery. Alamo blanco (Thespesia populnea (L.) Corr.), and Molondron (Okra) (Abelmoschus esculentus (L.) Moench) are used to treat eye diseases, specifically conjunctivi...
Article
Full-text available
Allocapnia polemistis is recorded for the first time beyond the Black Warrior Uplift of Alabama, in Tishomingo Co., Mississippi. Scanning electron micrographs of the male genitalia are provided and the epiproct and 8th tergal process are compared with those of topotypes of A. recta, a closely related species.
Article
Seventy-one sites were surveyed for Allocapnia (Plecoptera: Capniidae) in southwestern Mississippi and three of the Florida parishes of Louisiana. These surveys extended over six major river drainages. New records of A. virginiana, A. recta, and A. aurora are reported, and scanning electron micrographs of the male genitalia are provided for each sp...
Article
Typescript. Thesis (B.S.)--Mississippi College, 1997. Vita. Includes bibliographical references (leaves 35-41).

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Projects

Project (1)
Project
This study aims to test the species boundaries in the Desmodium ciliare complex, to resolve the relationships between the species, and to resolve the relationships of the D. ciliare complex among other Desmodium found in Mississippi.