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The male stamen is inside the tube-shaped corolla of the disk floret. It has five anthers, five filaments, and produces pollen. The anthers and filaments are readily visible as separate entities in non-Asteraceae species. Here, they are fused together to form a cylinder, or tube, with their pollen on the inside only.
Stamen is the Latin word meaning "thread" (originally thread of the warp, in weaving). [8]Filament derives from classical Latin filum, meaning "thread" [8]; Anther derives from French anthère, [9] from classical Latin anthera, meaning "medicine extracted from the flower" [10] [11] in turn from Ancient Greek ἀνθηρά (anthērá), [9] [11] feminine of ἀνθηρός (anthērós) meaning ...
To distinguish the two species, the only reliable characters are the lengths of the filaments and anthers. In absolute terms, the filaments and anthers of T. scouleri are almost always longer than the corresponding characters in T. ovatum. The minimum, average, and maximum lengths of the filaments and anthers of each species is as follows: [3]
The stamen filaments are thin and filiform, but may be appendiculate (bearing appendages) at their base, a feature that is also important in differentiating species. Their anthers are versatile (swinging freely) and oblong and attach to the filament at the back (dorsifixed). [6] [7] The pollen is bisulcate (two grooves). [8]
The anthers are 2–9 mm long and partially exserted, with the tips or upper third only surpassing the scales. The filaments are 0–0.5 mm long. The four smooth, shiny, light, medium or dark brown nutlets are 1.1–2.4 mm long by 0.6–1.5 mm wide and narrowly ovoid to ovoid in shape. [3] The chromosome number of M. lyallii subsp. elderi is ...
The filaments of the stamens are white, the anthers and pollen being yellow. The style has six to eight lobes at its end and is dark red. [3] Additionally, Schlumbergera truncata specifically has unique reproductive characteristics from that of Schlumbergera as a whole which includes varied seed development, germination, and fruit production. [5]
Boston Celtics fans are still upset with Steve Kerr over Jayson Tatum’s Olympics “snub.” Fans at TD Garden ripped the Golden State Warriors head coach with a loud chorus of boos ahead of ...
The lower third of these filaments are fused with the corolla tube, while sometimes filaments may also be attached to their neighbors. Filaments carry nectaries. The anthers stand upright, with pollen freed from a slit at the top. The style is thread-like without hairs, sticking out above the corolla tube, while the stigma at its tip is club ...