Your search for articles by authors with the surname Hesse has found 3 articles.

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M. Hesse The uniquely designed pollen aperture in Lasioideae (Araceae) (Buy)
 ABSTRACT: The pollen aperture of Lasioideae (sensu Mayo et al., 1997) is a sulcus with two unique characters, seen only in ultrathin sections. A continuous ectexine lamella overspans the whole furrow. Below a thick, bilayered endexine is found. Its outer part consists of isolated flakes or discontinuous lamellae, while the inner part is spongy. The endexine flakes are usually absent in the central sulcus area. This unique aperture stratification is restricted to the Lasioideae. It is absent not only in the other Araceae subfamilies (therefore confirming the homogeneity of Lasioideae), but also not found in any other angiosperm pollen. This peculiarity of all Lasioideae may be correlated with the socalled harmomegathic effect, and as a functional benefit a better preservation from dehydration can be assumed.
Josef Bogner, M. Hesse Zamioculcadoideae (Buy)
 ABSTRACT: Remarkable and distinctive pollen characters support the separation of the tribe Zamioculcadeae as a group distinct from the aperigoniate Aroideae: Recently reported molecular data point in the same direction, and morphological and anatomical data likewise indicate a clear separation. Taken together, the evidence justifies the placement of at least the Zamioculcadeae in a new subfamily, Zamiocu1cadoideae. Zamioculcas and Gonatopus show greater pollen differences from the aperigoniate Aroideae than Stylochaeton, ,which seems to, represent an intermediate transition state. Nevertheless, Stylochaeton is closer palynologically and morphologically to the aperigoniate Aroideae.
M. Hesse Pollen of Anubias, Culcasia, Lagenandra and Piptospatha (Aroideae, Araceae): Functional and Systematic Relevance (Buy)