A New Species of Arceuthobium (Viscaceae) from Central Mexico

Hawksworth, Frank G.; Wiens, Delbert

doi:10.2307/2806732

Cited by 6 publications

(25 citation statements)

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“…Arceuthobium pendens is also a rare endemic, being found only in San Luis Potosí , Veracruz, and Puebla, Mexico. Because this latter species parasitizes pinyon pines, as does A. divaricatum, Hawksworth and Wiens (1980) first suggested they were related, but this was not supported using isozymes (Nickrent, 1996) nor ITS sequences . Thus, A. guatemalense and A. pendens represent the first clade of subgenus Vaginata, a group that evolved flabellate secondary branching from ancestors with the plesiomorphic verticillate secondary branching character.…”

Section: Arceuthobium Guatemalense and A Pendens-mentioning

confidence: 99%

A phylogeny of all species of Arceuthobium (Viscaceae) using nuclear and chloroplast DNA sequences

Nickrent

García

Martín

et al. 2004

American J of Botany

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The genus Arceuthobium (dwarf mistletoes, Viscaceae) comprises 42 species that parasitize hosts in Pinaceae and Cupressaceae in the Old and New Worlds. Maximum parsimony analyses were conducted on two data partitions (separately and combined): nuclear ribosomal internal transcribed spacer (ITS) sequences for all 42 currently recognized species and chloroplast trnT-L-F sequences for 34 New World species. The Old and New World species were phylogenetically distinct using ITS, thus making subgenus Arceuthobium paraphyletic. Arceuthobium pendens and A. guatemalense comprise the basalmost clade of subgenus Vaginata, characterized by the presence of flabellate secondary branching. The trnT-L-F sequences, which vary widely in length depending upon taxon, contain three times less phylogenetic signal than ITS, although homoplasy for this partition is lower. Several of the clades obtained from analysis of nuclear ITS sequences are also recovered using trnT-L-F sequences such as A. guatemalense and A. pendens, the A. rubrum group, the A. vaginatum group, and the A. campylopodum group. The ITS + trnT-L-F tree is well resolved except for four internal nodes. A revised classification of the genus is discussed that recognizes only monophyletic species that are well differentiated by molecular data.

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Section: Arceuthobium Guatemalense and A Pendens-mentioning

confidence: 99%

A phylogeny of all species of Arceuthobium (Viscaceae) using nuclear and chloroplast DNA sequences

Nickrent

García

Martín

et al. 2004

American J of Botany

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“…This dwarf mistletoe has only been discovered in two additional populations much farther south in Mexico and in close proximity to each other: northwest of Perote near Frijol Colorado in western Vera Cruz and on Cerro Pizarro in northeastern Puebla (Chazaro and Olivia 1987;Hawksworth and Wiens 1996;Hawksworth et al 2002). Because this dwarf mistletoe is only known from three populations, it is currently considered to be one of the rarest dwarf inistletoes in Mexico (Hawksworth and Wiens 1996).…”

mentioning

confidence: 98%

“…Arceuthobium pendens Hawksworth & Wiens (Viscaceae) was described in 1980 from the Sierra San Miguelito in southwestern San Luis Potosi, Mexico (Hawksworth and Wiens 1980). This dwarf mistletoe has only been discovered in two additional populations much farther south in Mexico and in close proximity to each other: northwest of Perote near Frijol Colorado in western Vera Cruz and on Cerro Pizarro in northeastern Puebla (Chazaro and Olivia 1987;Hawksworth and Wiens 1996;Hawksworth et al 2002). Because this dwarf mistletoe is only known from three populations, it is currently considered to be one of the rarest dwarf inistletoes in Mexico (Hawksworth and Wiens 1996).…”

mentioning

confidence: 99%

“…For this species, information on several morphological, phenological, and other attributes are limited or unavailable. When Hawksworth and Wiens (1980) described Arceuthobium pendens, they provided morphological data on the size and color of male and female plants and the size of staminate flowers. Because Hawksworth and Wiens' original specimens collected in 1979 from San Luis Potosi, as well as specimens collected by D. K. Bailey and T. Wendt in 1980 from Vera Cruz, were collected in early March, Hawksworth and Wiens did not have specimens of male plants with open flowers or female plants with mature fruits and seeds (Hawksworth and Wiens 1980).…”

mentioning

confidence: 99%

“…When Hawksworth and Wiens (1980) described Arceuthobium pendens, they provided morphological data on the size and color of male and female plants and the size of staminate flowers. Because Hawksworth and Wiens' original specimens collected in 1979 from San Luis Potosi, as well as specimens collected by D. K. Bailey and T. Wendt in 1980 from Vera Cruz, were collected in early March, Hawksworth and Wiens did not have specimens of male plants with open flowers or female plants with mature fruits and seeds (Hawksworth and Wiens 1980). However, they were able to obtain measurements of staminate flowers from specimens collected by M. F. Robert in September 1971 that had male plants with mature staminate flowers.…”

mentioning

confidence: 99%

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Additional Taxonomic Studies of Arceuthobium Pendens (Viscaceae): A Rare Dwarf Mistletoe From Central Mexico

Mathiasen¹,

Daugherty

2006

Madroño

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Additional measurements of male and female plants and staminate flowers are reported for Arceuthohiuni pendens. Measurements for fruits and seeds of this rare mistletoe are reported for the first time. Additional information on phenology and host reactions to infection is reported also. ResumenSe reportan mediciones adicionales de plantas masculinas y femeninas y de flores masculinas de Areeuthobiwn pendens. Las mediciones de frutos y semillas de esta rara especie de muerdago enano son reportadas por primera vez. Informacion adicional sobre fluoracion y dispersi6n de semillas y reacciones del hospedero a la infeccion son tambien reportadas.

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A molecular phylogeny of Arceuthobium (Viscaceae) based on nuclear ribosomal DNA internal transcribed spacer sequences

Nickrent

Schuette

Starr

1994

American J of Botany

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Ribosomal DNA (rDNA) internal transcribed spacer (ITS) and 5.8S rDNA sequences were obtained from 22 species of dwarfmistletoes (Arceuthobium -Viscaceae) to test phylogenetic relationships. Interspecific distances ranged from 0 to 21.4% between New World species, values two to five times higher than those measures for the ITS region in other plants. One Old World species (A. oxycedri) and one New World species (A. abietis-religiosae) were remarkably similar to each other but exhibited up to 41% sequence divergence from the remaining species. Minimum length trees support the concept of a verticillately branched subgenus Arceuthobium; however, interspecific distances indicate this group is extremely heterogeneous. Subgenus Vaginata, Section Vaginata, is centered in Mexico and encompasses all the taxa previously placed in this group but is expanded to include several species previously classified in Section Campy/opoda (e.g., A. divaricatum, A. rubrum, and A. strictum). The sister group relationship between A. divaricatum and A. douglasii, first seen following isozyme analysis, is supported by ITS sequence data. Section Campy/opoda s. s. is now composed of 13 mainly U.S. species that show a high degree of morphological and genetic similarity. The eastern dwarf mistletoe, A. pusillum, is not closely related to A. doug/asii but rather with A. bicarinatum from Hispaniola, which suggests that these taxa represent highly modified relicts that shared an ancestor in the early Tertiary. Two endemic species from Mexico and Central America (A. guatemalense and A. pendens) formed a sister group and have been placed in a new Section (penda). Rapid molecular evolution in Arceuthobium may be associated with the adaptive radiation of this genus on numerous conifer hosts.

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A New Species of Arceuthobium (Viscaceae) from Central Mexico

Cited by 6 publications

References 5 publications

A phylogeny of all species of Arceuthobium (Viscaceae) using nuclear and chloroplast DNA sequences

A phylogeny of all species of Arceuthobium (Viscaceae) using nuclear and chloroplast DNA sequences

Additional Taxonomic Studies of Arceuthobium Pendens (Viscaceae): A Rare Dwarf Mistletoe From Central Mexico

A molecular phylogeny of Arceuthobium (Viscaceae) based on nuclear ribosomal DNA internal transcribed spacer sequences

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