| Catasetum viridiflavum | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Epidendroideae |
| Genus: | Catasetum |
| Species: | C. viridiflavum |
| Binomial name | |
| Catasetum viridiflavum Hook. (1843) | |
| Synonyms | |
| |
Catasetum viridiflavum, the green-yellow catasetum, is a species of orchid. [1] [2] [3]
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Catasetum, abbreviated as Ctsm. in horticultural trade, is a genus of showy epiphytic Orchids, family Orchidaceae, subfamily Epidendroideae, tribe Cymbidieae, subtribe Catasetinae, with 166 species, many of which are highly prized in horticulture.
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Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte with two male gametes (sperm). It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower. The pollen grain then takes in moisture and begins to germinate, forming a pollen tube that extends down toward the ovary through the style. The tip of the pollen tube then enters the ovary and penetrates through the micropyle opening in the ovule. The pollen tube proceeds to release the two sperm in the embryo sacs.
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Catasetum callosum, the callused catasetum, is a species of orchid.
Catasetum cernuum, the nodding catasetum, is a species of orchid found from Trinidad to Brazil.
Catasetum discolor, the differently colored catasetum, is a species of orchid.
Catasetum globiflorum, the spheroid-flowered catasetum, is a species of orchid found in Brazil.
Catasetum pileatum, the felt-capped catasetum or mother of pearl flower, is a species of orchid found from Trinidad to Ecuador.
Catasetum saccatum, the sack-shaped catasetum, is a species of orchid.
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