The face in the pictures is always blank -- attention is riveted on those flashing naked legs and feet, those sweeping bare arms, that rounded exposed throat".
Resonant, rounded sound is formed by opening the throat and by limiting the nasality.
Flower: calyx 7--10 mm, membranes +- 1/2 calyx, wider than lobes; corolla salverform, tube 10--25 10--25 10--25pink, hairy outside, throat yellow, lobes 2--4 mm, rounded or truncate, light to deep pink, base generally whitedarker pink or red spink stamens exserted.
The Australian raven has throat feathers (hackles) that are lanceolate with rounded tips, while the other four species of Australian corvids have bifurcate tips, though this can be difficult to see in the field.
Finally, the discharge coefficients for both rounded- and elliptical-entry nozzles correlate well with a throat Reynolds number.
Flower: calyx 6--11 mm, ciliate, nonglandular, membrane obscure; corolla salverform, tube 12--32 12--32 12--32ke, +- red, throat yellow, lobes generally < 4 mm, obovate, rounded or truncate, pink, white, or pale yellow; stamens exserted; stigmas <= 1(3) mm.
Flower: calyx 4--8 mm, densely hairy, membrane obscure; corolla salverform, tube 5--16 mm, thread-like, +- red, throat yellow, lobes 2--4 mm, obovate, rounded or truncate, pink or white; stamen exserted; stigmas generally <= 1(3) mm.
Flower: uppermost calyx lobe generally largest; corolla tube of opening flowers truncate or with rounded sac-like extension at base, lower lip base generally swollen, closing throat; stamens 4, generally included, staminode 0; style included, straight or curved, glabrous or glandular-puberulent to near tip, stigma inconspicuous.
Flower: 12--21; corolla 6.5--8.5 6.5--8.5 6.5--8.5sommtimes distally +- palele, tube << throat; anther base weaklyellowed, tip lanceolate to ovate; sometimesnches minutely papillate, roundistallycate.
Flower: pedicel 8--25 mm; calyx 4--6 mm, +- puberulent, lobes equal, 0.5--2 mm, obtuse to rounded, densely ciliate, tip +- small-pointed; corolla rose to pink, upper two lobes much reduced, tube-throat 7--10 mm, limb 5--9 mm wide.
