Palinología

La genre Crenea, d'apl'es GRAHAM et al., serait un genre constitue de 3 especes, restreint aux rivages, iles, bords de riviere du Nord de l'Amerique du Sud et de Darien (Panama) (GRAHAM et al., 1985).Ces trois especes seraient C. 'maritima Aublet, C. surinamensis (L. f.) Koehne et C. patentinerois (Koehne) Standley, mais pour A. LOURTEIG C. maritima et C. surinemensis seraient synonymes.synonymes.La genre Crenea, d'après GRAHAM et al., serait un genre constitué de 3 espèces, restreint aux rivages, îles, bords de rivière du Nord de l'Amérique du Sud et de Darién (Panamá) (GRAHAM et al., 1985). Ces trois espèces seraient C. maritima Aublet, C. surinamensis (L. f.) Koehne  et C. patentinervis (Koehne) Standley, mais pour A. LOURTEIG C. maritima et C. surinamensis seraient synonymes

Preliminary data on microcharacters and chromosome number in Tornabenea species (Apiaceae) from Cape Verde islands

Tornabenea is a small Apiaceae genus that is endemic to the Cape Verde Islands. Its species differentiation is based just on a few macromorphological characters: leaf shape, number and shape of umbel bracts and mericarp ribs. These characters vary within each species and show high plasticity. Thus, in recent taxonomic data of the genus, there are different viewpoints as to the number of species. Here, in order to improve the taxonomy of the genus, microcharacters of the vegetative and reproductive structures of three taxa—T. insularis, T. annua and T. tenuissima—have been examined. The shape and arrangement of hairs on the surface of the mericarps, and the presence and structure of starch grains are the only different microcharacters noted in T. insularis and T. annua. Chromosome number of the latter two species is 2n¼18. Our preliminary results disagree with the existing classifications of the genus Tornabenea. In fact, they do not lead to a clear separation between T. insularis and T. annua. By contrast, it is easy to distinguish between these species and T. tenuissima, which possesses more peculiar microcharacter

Palinología Palinología

<p class="MsoNormal" style="margin-bottom: 0.0001pt; line-height: normal;"><span style="font-size: 10pt; font-family: " lang="EN-US">La genre <em>Crenea, d'après </em>GRAHAM <em>et al., </em>serait un genre constitué de 3 espèces, restreint aux rivages, îles, bords de rivière du Nord de l'Amérique du Sud et de Darién (Panamá) (GRAHAM <em>et al., 1985).</em> Ces trois espèces seraient C. <em>maritima </em>Aublet, C. <em>surinamensis </em>(L. f.) Koehne <span> </span>et C. <em>patentinervis </em>(Koehne) Standley, mais pour A. LOURTEIG</span></p> <span style="font-size: 10pt; font-family: " lang="EN-US">C. <em>maritima </em>et C. <em>surinamensis </em>seraient synonymes.</span><br><p class="MsoNormal" style="margin-bottom: 0.0001pt; line-height: normal;"><span style="font-size: x-small;">La genre Crenea, d'apl'es GRAHAM et al., serait un genre constitue de </span><span style="font-size: small;">3 especes, restreint aux rivages, iles, bords de riviere du Nord de l'Amerique </span><span style="font-size: small;">du Sud et de Darien (Panama) (GRAHAM et al., 1985).</span></p><p class="MsoNormal" style="margin-bottom: 0.0001pt; line-height: normal;"><span style="font-size: x-small;">Ces trois especes seraient C. 'maritima Aublet, C. surinamensis (L. f.) </span><span style="font-size: small;">Koehne et C. patentinerois (Koehne) Standley, mais pour A. LOURTEIG </span><span style="font-size: x-small;">C. maritima et C. surinemensis seraient synonymes.</span><span style="font-size: 10pt;">synonymes.</span></p