A New Miniature Portea from Brazil
- APPENDIX A: KEY TO TREES IN LEAFLESS CONDITION. // Peterson Field Guide to Western Trees: Western United States & C;1998, p391
A variety of preliminary and main keys of classifiying unknown specimen of trees that relate to the topics that appeared in the book "A Field guide to Western Trees" are presented.
- Selaginella eurynota A. Braun (Selaginellaceae) - a new record for India. Parthipan, M.; Rajendran, A. // ZOOs' Print;Feb2013, Vol. 28 Issue 2, p27
The present paper illuminates the occurrence of an unique Lycophytes Selaginella eurynota A. Braun. from the Yercaud hills in Eastern Ghats of Tamil Nadu. This species can be distinguished from other species by its rhizophores springing from the upper surface of the stem for V3-3/4 of its...
- FLORAL DIVERSITY PRESERVED IN FOSSILS. Lundmark, Cathy // BioScience;Jun2005, Vol. 55 Issue 6, p544
The article focuses on the preservation of floral diversity in Patagonia, Argentina. Patagonia, Argentina, has long been known for its fossil troves, but until recently few scientists have studied the assemblages in detail. Peter Wilf, of Pennsylvania State University, and his colleagues from...
- Resource-based niches provide a basis for plant species diversity and dominance in arctic tundra. McKane, Robert B.; Johnson, Loretta C.; Shaver, Gaius R.; Nadelhoffer, Knute J.; Rastetter, Edward B.; Fry, Brian; Giblin, Anne E.; Kielland, Knut; Kwiatkowski, Bonnie L.; Laundre, James A.; Murray, George // Nature;1/3/2002, Vol. 415 Issue 6867, p68
Investigates the basis for plant species diversity and dominance in the tundra of the Arctic regions. Significance of niche differentiation for the promotion of species diversity; Differentiation of plant species; Correlation of species dominance with the uptake of available soil nitrogen forms.
- Mississippi. Whitson, Maggie // Castanea;Mar2010, Vol. 75 Issue 1, p136
The article offers information on the South American native plant Portulaca amilis which was found growing in an infrequently mowed lawn in Lowndes County in Mississippi. It notes that the existence of the plant in the U.S. was first recorded in 1981. The plant is common in Hattiesburg and grows...
- Altitudinal variation and conservation priorities of vegetation along the Great Rift Valley escarpment, northern Ethiopia. Aynekulu, Ermias; Aerts, Raf; Moonen, Pieter; Denich, Manfred; Gebrehiwot, Kindeya; V�gen, Tor-Gunnar; Mekuria, Wolde; Boehmer, Hans // Biodiversity & Conservation;Sep2012, Vol. 21 Issue 10, p2691
Understanding plant species distribution patterns along environmental gradients is fundamental to managing ecosystems, particularly when habitats are fragmented due to intensive human land-use pressure. To assist management of the remaining vegetation of the Eastern Afromontane Biodiversity...
- Discovering primulas of subsection Agleniana. Broadman, Pete; Chambers, Anne; Eveleigh, Pam; Richards, John // Plantsman: New Series;Jun2010, Vol. 9 Issue 2, p88
The article offers information on several species of Agleniana, which is one of the subsections of the genus Primulas. It says that Frank Kingdom Ward, a Himalayan explorer, was the first to pay attention to the unique nature of Agleniana species, which he found in Burma and the Indian state of...
- Computing diversity from dated phylogenies and taxonomic hierarchies: does it make a difference to the conclusions? Ricotta, Carlo; Bacaro, Giovanni; Marignani, Michela; Godefroid, Sandrine; Mazzoleni, Stefano // Oecologia;Oct2012, Vol. 170 Issue 2, p501
Recently, dated phylogenies have been increasingly used for ecological studies on community structure and conservation planning. There is, however, a major impediment to a systematic application of phylogenetic methods in ecology: reliable phylogenies with time-calibrated branch lengths are...
- Dandelions clocked at Cardiff show. // Plantsman: New Series;Jun2012, Vol. 11 Issue 2, p75
The article offers information on the RHS Cardiff Show in April 2012, staged by the National Museum Wales to demonstrate the diversity within the dandelions.