Results 81 to 90 of about 23,420 (258)

Catálogo sistemático dos pólens das plantas arbóreas do Brasil meridional XI - Loranthaceae e Olacaceae Catalogue of southern brazilian pollen grains

Memorias do Instituto Oswaldo Cruz, 1972
Em sequência às PROTEACEAE previamente examinadas, foram estudados nesta parte do Catálogo os grãos de pólen das LORANTHACEAE e OLACACEAE da floresta umbrófila subtropical do Sul do Brasil.
Ortrud Monika Barth
doaj   +1 more source

Phyllocephalum keralense (Asteraceae) a new species from southern Western Ghats of Kerala, India

Nordic Journal of Botany, EarlyView.
A new species of Phyllocephalum is described and illustrated from Palakkad district of Kerala, India. The new species shows similarity to P. rangacharii but differs with respect to key floral traits, viz. ovoid shape of the capitula, involucral bracts in 3 series, inflated receptacle and ovoid 6‐ribbed ovary with 5–6 densely barbellate pappus setae ...
Arya Sindhu, Sojan Jose, Alex Philip Alen, Venugopalan Nair Saradamma Anilkumar, Veerankutty Suresh   +4 more
wiley   +1 more source

Effect of population reinforcement method, site, and plant characteristics on early establishment of the rare endemic plant species Minuartia smejkalii

Nordic Journal of Botany, EarlyView.
Many habitat‐specialist plant species have been endangered by fragmentation or destruction of their habitats. Minuartia smejkalii is a serpentinophyte endemic to the Czech Republic. It is highly threatened by recent habitat destruction and fragmentation, calling for effective conservation measures.
Alrun Siebenkäs, Karolína Sučíková, Zuzana Münzbergová, Hana Pánková   +3 more
wiley   +1 more source

Evaluation of pollen production in Bromus catharticus Vahl and Guadua trinii (Nees) Nees ex Rupr. (Poaceae) for interpretation of fossil data

Biotemas, 2016
We evaluated pollen production per anther, per flower, and per spikelet of the grassland species Bromus catharticus and the forest taxon Guadua trinii (Poaceae), which have divergent pollination syndrome.
Jefferson Nunes Radaeski, Soraia Girardi Bauermann   +1 more
doaj  

Main pollen characters in the diet of four stingless bees (Apidae: Meliponini) in the Chaco dry forest [PDF]

Rodriguésia
The pollen morphology of 59 floral resources found in 30 nests of four stingless bees was analyzed using nine characters. For identification and description, the pollen was acetolyzed and for cytoplasm measurements, the non-acetolyzed grains were ...
Favio Gerardo Vossler
doaj   +1 more source

Pollen morphology of Scorzonera (Asteraceae) in Turkey

Phytotaxa, 2016
The pollen morphology of 45 taxa belonging to 15 sections of the genus Scorzonera distributed in Turkey were studied with light and electron microscopies. The pollen is generally 3-zonocolporate. Pollen grains are oblate-spheroidal with the polar axes 23.2–59.2 µm and the equatorial axes 27–62.5 µm.
Pinar, N. Munevver, Coskuncelebi, Kamil, Simsek, Derya, Okur, Seda, Makbul, Serdar, Acar, Aydan   +5 more
openaire   +3 more sources

Reinstatement and generic reassignment of Phyllanthus asteranthos Croizat (Phyllanthaceae) based on living plant observations and specimen analysis

Nordic Journal of Botany, EarlyView.
Phyllanthus asteranthos Croizat has been treated as a synonym of P. pulcher Wall. ex Müll. Arg. (syn. Nymphanthus glaucescens (Miq.) R.W.Bouman) since 1987. Through detailed morphological observations of living plants and critical examinations of type materials and additional specimens, this study revealed that the two taxa are morphologically very ...
Feng Yang, Li‐Ju Jiang, Huan‐Chong Wang   +2 more
wiley   +1 more source

Pollen Morphology in Sorbus L. (Rosaceae) and Its Taxonomic Implications. [PDF]

Plants (Basel), 2023
Li M, Tian CF, Idrees M, Pathak M, Xiong XH, Gao XF, Wang XR.   +6 more
europepmc   +1 more source

Sexual reproduction in invasive Japanese knotweed (Reynoutria japonica) in south Sweden

Nordic Journal of Botany, EarlyView.
To understand the potential for northward expansion of knotweeds into currently uninvaded regions, it is crucial to assess the potential for sexual reproduction alongside the ongoing vegetative spread. For that reason, we tested viability in Reynoutria japonica seeds in south Sweden, a region where viable seeds had not been previously reported ...
Tina D'Hertefeldt, Annette Andersson, Ellen Andersson, Bea Nerer, Mattias West, Alexander Zimmerman   +5 more
wiley   +1 more source

Pollen morphology of Clerodendrum L. (Lamiaceae) from China and its systematic implications. [PDF]

PhytoKeys, 2023
Huang X, Wu R, Xiong Z, Ma Z.
europepmc   +1 more source