Those individual flowers which had the largest glands or nectaries
, and which excreted most nectar, would be oftenest visited by insects, and would be oftenest crossed; and so in the long-run would gain the upper hand.
Leaves are typically around 40-50 cm in height, with nectaries
all along the outer leaf, particularly concentrated along the edge and lower side of the hood (Miller, pers.
(EFN) are glands that secrete nectar (solutions of sugars, amino acids, lipids, and other organic compounds) located outside of flowers and have been reported on species belonging to 110 families and 806 genera (Koptur 1992; Marazzi et al.
Edible pollen grains and nectar secreted by trichome nectaries
of the corolla and cushion nectaries
of the calyx constitute the rewards offered to visitors.
Leaves alternate, spiral or distichous; petiolate or subsessile, presence of pulvinus; extrafloral nectaries
absent or present, convex, sessile or stipitate, located between the pairs of leaflets or on the petiole; leaflets 1-many pairs, papyraceous to coriaceous, elliptic to oblong, lanceolate to obovate, apex acuminate, rounded to mucronate, base oblique.
in Fritillaria are large and well developed and have been used as basis for subgeneric classifications.
queenslandiae, and other authors have described features considered common in the genus such as white or red latex, nonarticulated laticifers, extrafloral nectaries
, liana habit with tendril-like climbing stems, mushroom-shaped androecia, and large fruits (Rudall, 1994a, b; Gillespie, 1997; Gillespie and Ambruster, 1997).
maculata forage for dill pollen and nectar because its plants have exposed stamens and nectaries
in umbel-type flowers, granting easy access to these individuals, while the flowers of coriander plants, despite being of the same type, have partially hidden nectaries
by other parts of the flowers, possibly making them less attractive to C.
You should be looking at single flowers with decent nectaries
(nectarproducing tissue)," he advises.
The big double ones tend to have replaced their nectaries
- which bees love - and their pollen with more petals so they are less useful.
The petiole is medium to short with reniform nectaries
The other two are single, pure and simple - a rich deep claret and a soft yellow with eccentric yellow nectaries