The scattered areoles
are formed by 6-14 spines, each 0.
1993), and Yemen (Schultz 1998; Sipman 2002), this species has a thick white thallus, which can cover large areas (extending 10-20 cm or more), and convex areoles
, with big apothecia slightly sunken in the thallus.
violaceus are polygonal structures of the cuticle called areoles
, which are surrounded by fine cuticular bristles.
Sterile leaves with veins forming small areoles
within larger areoles
Thallus thin, yellow, lobulate or of small cracked areoles
, or not evident; spores 14 x 7 [micro]m, isthmus 2.
Face rugosoareolate, areoles
becoming smaller towards vertex and paraocular areas, and weaker on supraclypeal area; gena and postgena strongly striate.
Ants forage the nectar secreted over the flowering buttons, from the time they are covered by the areoles
plush hair till they open as pink flowers.
Interestingly, the base of some setae and the areoles
of trichobothria typically fluoresce more brightly than the surrounding surfaces and this property can assist in the location of trichobothria.
FEW of them produce leaves and instead have areoles
, bud-like organs which produce spines.
Diagnostic characters of adult hairworms include: 1) the presence and nature of the areoles
(raised areas on the cuticle), especially their type, shape, size, arrangement, and association with pore canals, bristles, warts and papillae, 2) body shape, size and color pattern, especially that associated with the anterior (calotte) and posterior ends and, 3) features of the male tail, including first, whether it is simple or forked and then if it bears preor postcloacal ridges, folds, hairlines, bristle fields or tubercles.
The young areoles
near the top of the plant bear cottony, wool tufts.
Nebraska records are near the northern edge of the range for this southern species that consists of closely aggregated, squamulose to lobate areoles
Cacti, by the way, are distinguished from other succulents by having areoles
Their succulent and normally photosynthetic stems have longitudinal grooves and ribbing, along which they bear areoles
, corresponding to the leaf axils, from where the cacti produce their spines.
Cactuses - which have spines or thorns growing out of regularly spaced areoles
- can be barrel-shaped, tall and branching, or irregularly shaped and close to the ground.