apiculus


Also found in: Medical.

apiculus

(əˈpɪkjʊləs)
n
a small point or tipthe short, pointed bud of a spore
Translations
Mentioned in ?
References in periodicals archive ?
8, elliptical with prominent apiculus, rounded at the distal end, smooth to poorly ornamented; yellowish brown to brown, with oily drops, highly dextrinoid (deep reddish brown) in Melzer's reagent.
Antennae dark brown with the apiculus pointed and hooked, red brown ventrally.
Castniid moths are medium to large in size, from 20 to 110 mm; they are related to Cossidae and Hesperiidae, the distal portion of the antenna is similar to that of the Hesperiidae with a club and apiculus and the presence of three cubital veins on the wings.
Habit single, gregarious or in clusters Branches smooth to wrinkled, white, yellowish with age Branch Tips blunt but occasionally crested Spore Print white Spores smooth, sub-globose to broadly elliptical with apiculus, 7-14 x 7.
Relative lengths of antennomeres: 11-10-64-45-44-44-44-43-39-37-35-33-32-28-23-22; apiculus of distal flagellomere ca 0.
Stamens included; filaments complanate, lilac toward the apex, the antepetalous ones adnate to the petals for 6-8 mm, the antesepalous ones free; anther base obtuse-sagittate, apex apiculate, apiculus nigrescent, dorsifixed above the base at 1/3 of its length; pollen globose, diporate, exine psillate; stigma conduplicate-spiral, ellipsoid-capitate, lilac-purple, margins crenulate-lacerate; ovary obconic, trigonous, 8-9 mm long, 6-7 mm in diameter at the apex, white, glabrous, bearing inconspicuous longitudinal sulcus; placentation apical; ovules shortly caudate; epigynous tube inconspicuous, ca.
Jochen Bockemuhl breaks down the developmental process into four discrete activities: 1) "'shooting,' when the leaf's apiculus extends away from the growing point"; 2) "articulating," when the tip "begins to move in several different directions"; 3) "spreading," when "the points of articulation begin to move away from each other"; and 4) "stemming," when "the stalk at the base of the leaf extends itself.
Meanwhile, an apiculus is formed on the top of each anther (Figs.
En Colombia se registran tres subfamilias, "Pyrginae", Heteropterinae y Hesperiinae, las cuales tienen amplia distribucion en el mundo, distinguibles por la forma de alas y la disposicion de las mismas en reposo, variaciones en el numero de segmentos del nudum o maza antenal y forma en la terminacion del apiculus o extremo apical de las antenas, presencia de caracteres sexuales secundarios en los machos, los cuales se presentan sobre las alas anteriores como sucede para gran parte de las especies de Hesperiinae o en forma de penachos en las bases de las patas posteriores en las especies que integran los "Pyrginae".
2d) is awned and the lemma and palea were covered by spiny trichomes and lignified papillae, and the apiculus presented abundant large prickle trichomes in the distal end of the palea (Fig.
5 um, globose to sub globose, reticulated, reticulum complete, with prominent apiculus.