Claim · model-written summary
Branched threads characterize H. bractescens and H. secunda.
- Taxon
- H. bractescens and H. secunda
Habenaria bractescensHabenaria secundae0 - Outcome
- Branched filiform threadse0
Verbatim
e0“Branched filiform threads characterise H. bractescens and H. secunda”
Title
Pollen grains and pollinia in four Southamerican palustrine species of Habenaria (Orchidaceae)
Lilian M. Passarelli; Cristina H. Rolleri El Servicio de Difusión de la Creación Intelectual (National University of La Plata) 2010. doi:10.1080/00173130903484869#.vcrnfvl5o2u
Other claims from this paper (10)
- Observation Pollinia have acalymmate, piriform or tabular massulae.
- Observation Filiform elastoviscin threads form between pollen grains and bind them.
- Observation Pollen grains are inaperturate, in calymmate tetrads, with reticulate or reticulum-like heterobrochate exine.
- Observation Reticulate ornamentation has irregular continuous muri, whereas reticulum-like ornamentation has discontinuous partial muri and isolated pila-like elements.
- Observation Outer pollen walls have complete exine and intine with columellae, whereas inner walls lack exine or have a reduced one.
- Observation Pyriform triangular massulae occur in H. gourlieana, H. paucifolia and H. secunda.
- Observation Tabular oblong massulae characterize H. bractescens.
- Observation H. gourlieana has interrupted discontinuous muri, unlike the other three species with reticulate grains.
- Observation Elastoviscin threads were lipidic and sometimes bore pores in H. bractescens.
- Observation Unbranched threads occur in H. gourlieana and H. paucifolia.