Legs with the femora unidentate, dentation at the middle, sulcate
beneath with the sulci bare (Fig.
Two main patterns of pollen morphology are present in Xyridaceae: spheroidal grains without an evident aperture, and pollen walls ornamented with projections, and elliptical, sulcate
grains with fine wall ornamentation.
Macropterous form: Thorax: Pronotum wider than long, with hispid tubercles, subquadrate, flattened, not declivous; frontal angles rounded, not projecting; humeral angles obtuse, not exposed; collar indistinctly depressed, not separated by a distinct incised line; middle third of pronotal disk with a broad longitudinal sulcus; anterolateral margins obliquely straight, roughly granulate; posterior margin concavely arcuate before base of scutellum; prosternum depressed; meso and metasternum sulcate
; anterior lobe of metathoracic peritreme weakly reniform, posterior lobe subacute, raised; evaporative area short; posterior margin of metapleura with outer third obtusely rounded, and slightly raised.
In adult plants, stipes are nearly circular in section, adaxially sulcate
, with one deep groove, and abaxially rounded; below the epidermis there is a wide hypodermic zone of fibers, 8-10 layers thick and a leaf trace with 3 strands included in a massive parenchymatic central area (Fig.
Half of the 16 black bears exhibited this form, while the other half had a slightly sulcate
Sample MHS 001228.1--venter with legs, possibly a sternum, possibly a male; good carapace wider than long, with orbits, sulcate
front, and weakly developed axial regions
3) are small fragments usually less than 4 mm in length; gray; lime-covered; cylindrical and sulcate
; cell walls often visible at breakage points or where lime has been scraped away.
Anterior commissure weakly sulcate
. Ventral interarea triangular, apsacline, flat, about one quarter as high as wide.
surface of the hemipenis is densely covered with small spines, whereas the asulcate surface is covered with large spines to the edge of the lobes (about two subcaudals from the tip), and the remainder of the lobe is covered with spinules to the edge of the smooth apical disk (Fig.
Stria 9 shallowly sulcate
from epipleuron midlength to subapical narrowing; obsolescent before subhumeral groove.
obs.): head small, fastigium of vertex raised, tuberculated, not contiguous with fastigium of frons, sulcate
, first antennal segment clearly larger than others.
aperture, related to heteropolarity in Magnoliaceae, was found in all species analyzed.