Identify Notes - Texas Native Plants
1) Texas Bombus Guide:
https://docs.google.com/presentation/d/1QSxFBZwkPC72SXanNB4xkzEtU6WhhFLHue7eOHeobV0/edit#slide=id.g3b09dd33ac_0_12
2) Frostweed. (Verbesina virginica).
4 (3) Ray florets (1–)2–3(–7); disc florets 8–12(–15) 2
vs
Mexican Winged Crown-Beard (Verbesina microptera)
Ray florets (9–)10–12+; disc florets 20–25+ 3
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=134477
3) Passion vine
In San Antonio area:
-
Fringed Passionflower (Passiflora ciliata) Invasive non-native species
Usually larger, darker, more well-defined leaves with the lobes usually being more angular and coming to a point
Stems and leaves can be anywhere between hairless to densely hairy
Leaves have little to no smell when lightly rubbed
Usually white or pink coronal filaments with pinkish petals/sepals
Hairless fruit that turns red at full maturity
An introduced species, usually found on disturbed sites / around human habitation
Aggressive growth habit; spreading
Invasive non-native species -
Stinking Passionflower (Passiflora foetida)
Usually smaller lighter green leaves with the same basic shape as the leaves of P. ciliata, although with more rounded lobes, usually not coming to a defined point
Leaves densely hairy; truly velvet-like in texture
Leaves give off a strong funky smell when lightly rubbed (to me it smells like cheese)
Usually purple/bluish coronal filaments with white petals/sepals
Hairy fruit that stays green at full maturity
Native species usually found on less disturbed sites, mainly found on the south Texas coastal plains
Smaller, less vigorous species than P. ciliata; not spreading
Reaches the northern limit of its range in Texas around San Antonio
Much, much less common in Bexar county than the introduced P. ciliata
The vast majority of "P. foetida" observations in our area on iNaturalist at the moment are misidentified P. ciliata.
Here is a good example of the real P. foetida:
https://www.inaturalist.org/observations/86986821
US Passiflora key:
http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=124132
4) White Prickly Poppy (Argemone albiflora) vs Texas Pricklypoppy Argemone aurantiaca
If latex bleeds yellow, it will be A. albiflora. If latex bleeds orange -- A. aurantiaca.