The variance analysis for clavae count by variety showed a significant difference (P [greater than or equal to] 0.
platyphylla, which showed notably that clavae were distributed in pentagon or hexagon manner forming a net.
Pollen wall ornamentation is very large clavae, clavae often swollen distally, interspersed in a matrix of similarly shaped, finer and smaller clava (Fig.
Pollen wall ornamentation is large clavae, clavae often distally swollen, basally sometimes constricted, sometimes with gemmae or short clava-like projections, interspersed in a matrix of finer and smaller clavae (Table 2, Fig.
There are low shoulder clavae that do not rise ventrad of the venter, and there are low, umbilical swellings at the umbilical ends of the ribs.
Although perhaps related to Tegoceras gladiator (Bayle, 1878), UT-8293 has a number of distinct differences, including interribs that are wider than ribs, much smaller umbilical swellings on the ribs, and a less accentuated zigzag pattern of the alternating ventrolateral clavae in ventral view.