Species within a genus

a-, an-, = denotes privative, negative;
a-, = without, not, -less, un-;
caulis, = the stalk or stem of a plant.
(stemless, or apparently so)
(Ox, ld, BL)

angustus, = narrow, strait, close, contracted, small, not spacious;
folium, = a leaf.
(narrow-leaved)
(ld, BL)

asper, = as affecting the sense of touch: rough, uneven;
-um, = means ‘characteristic of’.
asperum, = an uneven, rough place.
(rough to the touch because of prickles, uneven, harsh, rugged)
scaber, scabrum, = rough, scurfy, scabrous; scabby, mangy, itchy.
(scabrous, i.e. rough or gritty to the touch on account of numerous minute projections)
(ld, BL)

dif-¸dis-, = asunder, in pieces, apart, in two, in different directions;
color, = colour, hue, tint.
discolor, = of another colour, not of the same colour.
(not of the same colour, variegated)
(ld, BL)

flaccus, = flabby, hanging down;
-idus, = indicates a state or an action in progress.
flaccidus, = flabby, flaccid, pendulous.
(flaccid, not able to hold up its own weight)
(ld, BL)

scaber, scabrum, = rough, scurfy, scabrous; scabby, mangy, itchy.
(scabrous, i.e. rough or gritty to the touch on account of numerous minute projections)
(ld, BL)

For Friedrich Richard Rudolf Schlechter (1872-1925)**, German botanist.
(Ch)

semi-, = half-. demi-, semi-;
pappos, = a grandfather;
pappus, = an old man; a grandfather; the wooly hairy seed of certain plants.
pappos, = the downy or feathery appendage on many fruits , especially Compositae, as thistles, dandilions etc., hence extended to the reduced calyx of Compositae generally, whether downy, bristly, scaly, toothed or membranous;
(apical tuft of hair or bristles or homologous appendages on fruits of Compositae; on a seed, such a tuft is termed 'coma')
-osus, = indicates abundance or full or marked development.
(ld, LS, Ox, BL)