polyploid's Favorites

?
Ternate leaves, 3 teeth only per side, cut ~1/2 to midvein, widely spaced teeth; leaflets not strongly overlapping.
Flower bractlets ~1/2 as wide as sepals with edges rolled down.
Single flowers.

Leaf and stem hairs:

P. subvahliana - "long hairs common to abundant, spreading to ascending, 1(–2) mm, ± weak, rarely stiff, smooth, crisped/short-cottony hairs usually absent, sometimes sparse"; leaves - "abaxial grayish or yellowish white, long hairs 0.5–1 mm, cottony-crisped hairs ± dense (often obscured by long hairs), adaxial dark green to greenish gray, long hairs ± abundant, other hairs absent." (F of NA).

P. subgorodkovii - "long hairs common to dense, ± ascending to loosely appressed, sometimes spreading, 1–2 mm, ± soft, smooth, crisped/short-cottony hairs usually sparse, sometimes absent or common"; leaves - "abaxial yellowish or grayish white to white, long hairs 0.8–1.5 mm, cottony-crisped hairs ± dense, adaxial green to grayish green, long hairs sparse to ± abundant, other hairs usually absent. " (F of NA).

I can't tell the difference based on the F of NA descriptions above (sounds like both are saying the same thing without clear distinction).

If I go to Vascular Flora of AB (Kershaw & Allen):
P. subvahliana: "Leaf stalk hairs long, weak (rarely stiff) plus 0-few crinkly/cottony hairs".
P. subgorodkovii: "Leaf stalk hairs crinkly/cottony and (usually) long, soft.

The leaf undersides on this plant show what I'd think of as "cottony" hairs. Based on that, I'd think of these stem hairs as long, soft/weak and lacking crinkly/cottony hairs?

So... P. subvahliana?

See also: https://www.inaturalist.org/observations/150684025 Are they even different?

?
Ternate leaves, 3 teeth only per side, cut ~1/2 to midvein, widely spaced teeth; leaflets not strongly overlapping.
Flower bractlets ~1/2 as wide as sepals with edges rolled down.
Single flowers.

Leaf and stem hairs:

P. subvahliana - "long hairs common to abundant, spreading to ascending, 1(–2) mm, ± weak, rarely stiff, smooth, crisped/short-cottony hairs usually absent, sometimes sparse"; leaves - "abaxial grayish or yellowish white, long hairs 0.5–1 mm, cottony-crisped hairs ± dense (often obscured by long hairs), adaxial dark green to greenish gray, long hairs ± abundant, other hairs absent." (F of NA).

P. subgorodkovii - "long hairs common to dense, ± ascending to loosely appressed, sometimes spreading, 1–2 mm, ± soft, smooth, crisped/short-cottony hairs usually sparse, sometimes absent or common"; leaves - "abaxial yellowish or grayish white to white, long hairs 0.8–1.5 mm, cottony-crisped hairs ± dense, adaxial green to grayish green, long hairs sparse to ± abundant, other hairs usually absent. " (F of NA).

I can't tell the difference based on the F of NA descriptions above (sounds like both are saying the same thing without clear distinction).

If I go to Vascular Flora of AB (Kershaw & Allen):
P. subvahliana: "Leaf stalk hairs long, weak (rarely stiff) plus 0-few crinkly/cottony hairs".
P. subgorodkovii: "Leaf stalk hairs crinkly/cottony and (usually) long, soft.

The leaf undersides on this plant show what I'd think of as "cottony" hairs. . As compared to https://inaturalist.ca/observations/150680232, these stem hairs do seem crinkly and long (but not cottony)?

So... P. subgorodkovii?

(Are they even different??)