P. suchaniense
– Umbels with well developed peduncles ——————————————————– 3
3. Stem zig-zags, sparsely to densely hirsute; leaves sparsely to densely hirsute underneath; bracts densely hairy all over; hairs longer than double the width of fruits ———- P. hirsuta
– Stem never zig-zags glabrous or pubescent; leaves glabrous to pubescent with soft hairs underneath; bracts hairy on margins; hairs equal to or shorter than double the length of width ————————————————————————————————————– 4
2. Basal branches widely divergent; leaves 2– or 3–pinnatisect, with segments cuneate, glabrous schizocarps ovoid ————————————————————-