Growth form and inflorescence structure
of Paspalum L.
Emasculation of chrysanthemum inflorescences is a very complex and time-consuming process, as chrysanthemum inflorescence structure
is not suitable for emasculation [3-5, 9].
(shape and size of branches) as well as floral bract, sepal and petal venation, are variable in populations of Hechtia lepidophylla.
mira when compared to the taxa included in Chevaliera are related to the inflorescence structure
and the texture of the bracts: the numerous and densely arranged branches are flabellate (vs.
Recent taxonomic work has maintained Hitchcock's original concepts of cylindric, contracted, spike-like yellow and green foxtail inflorescence structure
(Great Plains Flora Association, 1991; Holm et al., 1997).
in species of Selena subgenus Hypoporum and subgenus Scleria (Sclerieae-Cypcraceae).
Comparison of the inflorescence structure
in Koyamaea and related
The main problems in the interpretation of the inflorescence structure
result from studies which did not consider the entire inflorescence (Vegetti, 2003); instead, attention was restricted to the position and arrangement of flowers in the final units of the often copiously branched inflorescence (Kukkonen, 1984).
One of the characters they analyzed was the partial inflorescence structure
, for which they recognized only two states: there may be present only fertile flowers and modified sterile flowers.
1 and 2): (1) Gross Inflorescence Structure
(unispicate, 0; occasionally unispicate, 1; multispicate, 2; highly compound, 3); (2) Degree of Utricle Fusion (closed, 0; open, 1); (3) Spikelet Sexuality (one-flowered pistillate, 0; bisexual, but monoecious, 1; perfect, 2); (4) Stigma Number (three, 0; two, 1); (5) Cladoprophylls (present, 0; absent, 1); (6) Inflorescence Prophylls (present, 0; absent, 1).
Evolution in the Myrtaceae--Evidence from inflorescence structure