Favoritos de somedeadbeat
Fotos / Sonidos
Qué
Sauces (Género Salix)Observ.
jbinpgDescripción
Here is one with the leaf shape of scouleriana but with leaf underside and branch color more typical of lasiandra.This is at the edge of a pond in a botanical garden at the University of Northern BC here in Prince George. There are other willow species present in the garden. I think hybrids should always be kept in mind as a possibility for this genus. However, the time when scouleriana and lasiandra both have catkins is likely not more than a week long in May so hybridization chances are not high.
Fotos / Sonidos
Observ.
margaret_eaglecapDescripción
Here's what we use to identify var. davisii:
-habitat is along rivers, usually older non-active sandy cobble bars that have re-vegetated to varying degrees, but also occasionally on active river shorelines
-leaflets are irregularly whorled (not all whorled, like O. splendens, and not all paired, like other species of Oxytropis)
-there are minute club-shaped structures scattered along the edge of the stipule among the straight hairs (tear leaf base carefully off a fresh plant and examine with hand lens in good light from the inside - it's really hard to find these structures without removing the leaf base from the plant)
-the flower colour varies between dark pink and light purple, but is not as bright pink as O. splendens
-the inflorescence in flower is relatively shorter than the very long infloresence of O. splendens in flower
-the leaves are grayish green to green in aspect (compared to O. splendens leaves that have abundant silky pubescence and so look gray and fuzzy)
That said, we do find forms intermediate between O. campestris var. davisii and O. splendens as mentioned in Welsh's 1991 paper on p. 394, and that complicates things.
Fotos / Sonidos
Observ.
margaret_eaglecapDescripción
Ovaries large and silky hairy (and seed has dispersed by mid-Aug); leaves green on both sides (not glaucous-backed); no glands at distal end of petiole on upper side of leaf; leaves leathery and shiny; wetland habitat.
Fotos / Sonidos
Qué
Sauce de Hoja Ancha (Salix scouleriana)Observ.
margaret_eaglecapDescripción
Minute appressed rusty-coloured hairs on glaucous leaf back; large obovate leaves; velvety branchlets; foliaceous stipules; silky-hairy ovaries with dark white-hairy floral bracts; sessile catkins (hard to find! this one attached at time of collection but fell off in handling); mesic forest habitat.
Collected for UBC.
Fotos / Sonidos
Observ.
margaret_eaglecapDescripción
The leaves are just emerging on this plant and the glaucous coating on the underside hasn't developed yet.
However, we can see that the catkins emerged well in advance of the leaves since they are sessile & done flowering . Green-leaved (not glaucous-backed) willows in AB with this general leaf shape would have the catkins on leafy branchlets.
S. pseudomonticola also has juvenile leaves reddish and leaf margins serrulate to crenate. Leafy stipules can also be seen developing here. Floral bracts are dark, leaf base rounded, leaf shape widely elliptic.
A female plant is right beside:
https://inaturalist.ca/observations/162019217
