A new combination in Guzmania (Bromeliaceae)

Utley, John F.

doi:10.5962/bhl.part.28267

Cited by 3 publications

(4 citation statements)

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“…Rosettes die just after fruiting, but they are able to propagate vegetatively. From each rosette one or two new rosettes (offshoots) may be formed from the axillary buds of the most basal leaves (Utley 1994). Seeds germinate and establish on different tree species.…”

Section: The Speciesmentioning

confidence: 99%

Temporal variation in the demography of the clonal epiphyte Tillandsia brachycaulos (Bromeliaceae) in the Yucatán Peninsula, Mexico

Mondragón¹,

Durán

Ramirez

et al. 2004

J. Trop. Ecol.

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Epiphytes are one of the most ubiquitous elements of tropical forest canopies, including seasonally dry tropical forests. Given the temporal variation in weather conditions in the latter, epiphyte populations may be subject to wide temporal variation in seedling recruitment, reproductive success, vegetative propagation and mortality rate. In this study, we use a 3-y demographic data set for Tillandsia brachycaulos to project its long-term population dynamics through the use of average and periodic matrices, as well as stochastic simulations. The results show that demographic behaviour varied over the 3 years of study, apparently in relation to rainfall. The first 2 years yielded a low λ value (0.79 and 0.80 – although only the former was significantly lower than unity), while the third year resulted in a λ = 1.08 (not significantly different from 1.0). When incorporating this demographic variation in an average matrix, a periodic matrix and stochastic simulations, the resulting overall λ was below unity in all three cases. The projections of the stochastic simulations suggest that the population would be able to persist in the long run only if the frequency of “good” years (defined here as those with an August rainfall above 200 mm) was above 0.6, which appears unlikely given that global warming might result in a lower frequency of rainy years in tropical dry forests.

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Section: The Speciesmentioning

confidence: 99%

Temporal variation in the demography of the clonal epiphyte Tillandsia brachycaulos (Bromeliaceae) in the Yucatán Peninsula, Mexico

Mondragón¹,

Durán

Ramirez

et al. 2004

J. Trop. Ecol.

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“…Till, unpublished data) indicate that the four most heterogeneous genera, Guzmania, Mezobromelia, Tillandsia, and Vriesea, are all paraphyletic, having at least two lineages in Mezobromelia, three lineages in Guzmania, 12 lineages in Tillandsia, and five lineages in Vriesea (W. Till, unpublished data). In addition, the transfer of species from Guzmania to Mezobromelia (Utley and Luther, 1991), from Tillandsia to Guzmania (Rauh, 1991), to Mezobromelia (Weber and Smith, 1983), and to Racinaea (Grant, 1993a(Grant, , 1994bSpencer and Smith, 1993) as well as from Vriesea to Alcantarea (Grant, 1995a), to Guzmania (Utley, 1978), to Mezobromelia (Utley and Luther, 1991;Grant, 1993a), to Werauhia (Grant, 1995a, b), and to Tillandsia (Grant, 1993b(Grant, , 1994a(Grant, , 1995b, demonstrate the unreliability of the current morphologically based taxonomy. The shifting of xeric members of Vriesea with exserted stamens and styles to Tillandsia subgen.…”

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confidence: 99%

Phylogenetic relationships in subfamily Tillandsioideae (Bromeliaceae) based on DNA sequence data from seven plastid regions

Barfuss

Samuel

Till

et al. 2005

American J of Botany

164

191

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Molecular phylogenetic studies of seven plastid DNA regions were used to resolve circumscriptions at generic and infrageneric levels in subfamily Tillandsioideae of Bromeliaceae. One hundred and ten tillandsioid samples were analyzed, encompassing 10 genera, 104 species, and two cultivars. Two species of Bromelioideae, eight species of the polymorphic Pitcairnioideae, and two species of Rapateaceae were selected as outgroups. Parsimony analysis was based on sequence variation of five noncoding (partial 5' and 3' trnK intron, rps16 intron, trnL intron, trnL-trnF intergenic spacer, atpB-rbcL intergenic spacer) and two coding plastid regions (rbcL and matK). Phylogenetic analyses of individual regions produced congruent, but mostly weakly supported or unresolved clades. Results of the combined data set, however, clearly show that subfamily Tillandsioideae is monophyletic. The earliest divergence separates a lineage comprised of Glomeropitcairnia and Catopsis from the "core" tillandsioids. In their present circumscriptions, genera Vriesea and Tillandsia, and their subgenera or sections, as well as Guzmania and Mezobromelia, are poly- and/or paraphyletic. Genera Alcantarea, Werauhia, Racinaea, and Viridantha appear monophyletic, but separation of these from Vriesea and Tillandsia makes the remainder paraphyletic. Nevertheless, Tillandsioideae separates into four main clades, which are proposed as tribes, viz., Catopsideae, Glomeropitcairnieae, Vrieseeae, and Tillandsieae.

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“…Species of Guzmania were transferred to Mezobromelia (Utley & Luther, 1991), species of Tillandsia were placed in Guzmania (Rauh, 1991), Mezobromelia (Weber & Smith, 1983) and Racinaea (Grant, 1993a(Grant, , 1994bSpencer & Smith, 1993) and species of Vriesea were transferred to Alcantarea (Grant, 1995a), Guzmania (Utley, 1978), Mezobromelia (Utley & Luther, 1991;Grant, 1993a), Werauhia (Grant, 1995a, b) and Tillandsia (Grant, 1993b(Grant, , 1994a(Grant, , 1995b. Species of Guzmania were transferred to Mezobromelia (Utley & Luther, 1991), species of Tillandsia were placed in Guzmania (Rauh, 1991), Mezobromelia (Weber & Smith, 1983) and Racinaea (Grant, 1993a(Grant, , 1994bSpencer & Smith, 1993) and species of Vriesea were transferred to Alcantarea (Grant, 1995a), Guzmania (Utley, 1978), Mezobromelia (Utley & Luther, 1991;Grant, 1993a), Werauhia (Grant, 1995a, b) and Tillandsia (Grant, 1993b(Grant, , 1994a(Grant, , 1995b.…”

Section: Introductionmentioning

confidence: 99%

“…Over the last decades, several changes have been made to the generic limits of Tillandsioideae. Species of Guzmania were transferred to Mezobromelia (Utley & Luther, 1991), species of Tillandsia were placed in Guzmania (Rauh, 1991), Mezobromelia (Weber & Smith, 1983) and Racinaea (Grant, 1993a(Grant, , 1994bSpencer & Smith, 1993) and species of Vriesea were transferred to Alcantarea (Grant, 1995a), Guzmania (Utley, 1978), Mezobromelia (Utley & Luther, 1991;Grant, 1993a), Werauhia (Grant, 1995a, b) and Tillandsia (Grant, 1993b(Grant, , 1994a(Grant, , 1995b. All these changes probably resulted from the usage of questionable diagnostic morphological characters (Benzing, 1980;Brown & Terry, 1992) and because many materials came from dried plants (Baker, 1889;Mez, 1934Mez, -1935Smith & Down, 1977) resulting in many misinterpretations of floral structures.…”

Section: Introductionmentioning

confidence: 99%

Morphoanatomy of the ovary and ovule in Bromeliaceae subfamily Tillandsioideae and its systematic relevance

Kuhn

Nogueira

Fagundes³

et al. 2016

Bot. J. Linn. Soc.

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Tillandsioideae are composed of nine genera, most of these with unclear delimitation. The morphoanatomy of ovules and ovaries of 83 species from seven different genera was studied under light or scanning electron microscopy to contribute to the understanding of the relationships in the group. The nucellar epidermis and the parietal tissue showed a regular pattern for all Tillandsioideae. The presence of chalazal appendages, however, and their shape and size varied between the genera analysed. Most species had a single acuminate chalazal appendage. Catopsis was the only genus with multiple appendages. Guzmania and Racinaea lacked this structure. The integuments also presented a variable length and thickness among the different genera. The four to six layers of the outer integument were unique in Catopsis and the three cell layers condition in the inner integument of Tillandsia should be a retained feature as it was also observed in Catopsis. Many characteristics in ovule morphology presented here have great systematic value for distinguishing genera of the Tillandsioideae. In addition, these features can also help in the understanding of ovule evolution in Bromeliaceae as a whole.

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A new combination in Guzmania (Bromeliaceae)

Cited by 3 publications

References 0 publications

Temporal variation in the demography of the clonal epiphyte Tillandsia brachycaulos (Bromeliaceae) in the Yucatán Peninsula, Mexico

Temporal variation in the demography of the clonal epiphyte Tillandsia brachycaulos (Bromeliaceae) in the Yucatán Peninsula, Mexico

Phylogenetic relationships in subfamily Tillandsioideae (Bromeliaceae) based on DNA sequence data from seven plastid regions

Morphoanatomy of the ovary and ovule in Bromeliaceae subfamily Tillandsioideae and its systematic relevance

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