Words similar to capitula
Example sentences for: capitula
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Tridentatae [ 68 ] , and may explain occasional heterogamous disciform capitula in S. bigelowii [ 34 35 ] . However, there may be many genetic and developmental mechanisms that affect ray formation and control floret fertility [ 69 70 ] .
In addition, plants with discoid capitula are considered homogamous since all florets are of one sexual form (perfect-bisexual disk florets), and plants with disciform capitula are considered heterogamous with two or more sexual forms ( i.e., pistillate rays and perfect disks, or pistillate rays and staminate disks).
Sphaeromeria also has heterogamous-disciform capitula with pistillate ray and perfect disk florets, as does heterogamous-disciform S. bigelowii , suggesting that it is indeed a plesiomorphy.
Both genera are discoid with corymbose capitula, but whether either genus possesses spineless pollen (a synapomorphy for the Artemisia -group) or is wind-pollinated has not yet been determined [ 2 37 ] . Kaschgaria, a genus of two species from China and central Asia, is also placed outside of the Artemisia -group, but clearly within Subtribe Artemisiinae (94% probability) in the ITS phylogeny.
In Artemisia s.l ., the typical limb of the Anthemideae-type ray florets are reduced to a membranous vestige, giving the impression that the small capitula are composed only of disk florets, referred to as disciform capitula (inflorescence) by Bremer and Humphries [ 2 ] . In other members of the genus, the ray flowers are absent, thus the capitulum is composed only of disk florets, i.e ., discoid.
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