San Francisco Peaks groundsel, Packera franciscana (Greene) W.
franciscana but was later annotated to Packera werneriifolia (A.
In addition, because widespread species of Packera are known to hybridize where species distribution overlaps (Barkley, 1988), and because our small study included only two species from the area, future studies might include other sympatric and widespread Packera, including Packera multilobata and Packera neomexicana, to assess their involvement in this hybrid complex.
There are three possible evolutionary consequences of hybridization for the rare endemic Packera in the San Francisco Peaks.
The common spring ephemerals included Cardamine concatenata, Delphinium tricorne, Galium aparine, Osmorhiza longistylis,
Packera obovata, Polygonatum biflorum var.
& Brettell *
Packera zimapanica BQ, VS 1 (Hemsl.) C.C.
Woody species (e.g., Fraxinus americana and Carya ovata) and several woodland perennials (including Galium circaezans and Packera obovatus) with C values as high as 7 were observed in the oldest sites (Table 1).
Species Years when present C value None in years 1-5 Acer saccharum 17-50 4 Crataegus crus-galli 17-50 4 Liparis loeselh 17 4 Galium triflorum 27-50 5 Ophioglossum vulgatum 27 4 Lactuca floridana 35-50 5 Carex amphibola 38 8 Carex radiata 38 4 Rubus occidentales 38 4 Smilax lasioneuron 38 4 Fraxinum americana 38-50 4 Leersia virginica 38-50 4 Asimina triloba 50 6 Carya ovata 50 4 Galium circaezans 50 7 Packera obovata 50 7 Prunus serotina 50 4 Ranunculus recurvatus 50 5 Symphyotrichum shortii 50 6
Eight forb species had C [greater than or equal to] 7, including Calystegia spithamaea, Comandra umbellata, Lobelia spicata, Lysimachia lanceolata,
Packera obovata, Silphium integrifolium, Symphyotrichum laeve, and Tradescantia virginiana.
Native herbaceous species occurring in this meadow were Impatiens pallida, Lactuca canadensis, Laportea canadensis,
Packera glabella, and Polygonum scandens.
douglassii, Claytonia virginica, Dicentra spp., Erigenia bulbosa, Erythronium americanum, Geranium maculatum, Geum vernum, Hydrophyllum macrophyllum, Isopyrum biternatum, Jeffersonia diphylla, Maianthemum racemosum, Osmorhiza longistylis, Packera obovata, Phlox divaricata, Podophyllum peltatum, Sanguinaria canadensis, Stellaria pubera, Trillium grandiflora, T.
Additional herbaceous species occurring here are Arabis laevigata, Aureolaria virginica, Blephilia ciliata, Heuchera americana, Hybanthus concolor, Packera obovata, Oxalis violacea, Scutellaria incana, S.
Cryptotaenia canadensis, Impatiens capensis, Packera aurea, and Pilea pumila occur in these wet spots.
macrophyllum, Maianthemum racemosum, Osmorhiza longistylis,
Packera obovata, Phlox divaricata, Podophyllum peltatum, Polygonatum biflorum, Sanguinaria canadensis, Trillium spp., including T.
15 May 1972 Oxalis illinoensis Oxalidaceae Clark, Maxwell 3432 Schwegman (SR)
Packera anonyma (A.W.
