Hier ein Zitat aus GERMPLASM COLLECTION, CHARACTERIZATION, AND ENHANCEMENT OF EASTERN PHLOX SPECIES
DISSERTATION
Presented in Partial Fulfillment of the Requirements for the
Degree Doctor of Philosophy Graduate School of The Ohio State University
By Peter Jeffrey Zale, M.S.:
S.274:
"Phlox amplifolia is rare in the wild and not widely cultivated, although there are some commercial cultivars attributed to this species (Bendtsen, 2009; Fuchs, 1994; Deam, 1940; Wherry, 1955). The widely grown P. paniculata ‘David’ is sometimes reported as P. amplifolia instead, but examination of morphological characteristics indicate it is a P. paniculata selection. ‘David’ is grown especially for its resistance to powdery mildew (Erysiphe cichoracearum). Limited field observations I have made of P. amplifolia in the wild indicated no presence of powdery mildew, so this species could be a source of resistance, if such resistance can indeed be shown under controlled conditions. There are no previous reports of successful interspecific hybridization between P. amplifolia and P. paniculata and related taxa."
S. 67:
"Five collections of this species were made from populations throughout its natiave range (Table 1.7). Four cultivars were obtained from a commercial source in The Netherlands, but they have yet to be confirmed as P. amplifolia. This species was the target of some regional collection expeditions. The first collection (PZ11-050) was made in extreme eastern Cocke County, Tennessee on the bluffs of the French Broad River. When observed in early October 2010, plants could be found in flower and with mature seed, suggesting that this species begins flowering during mid-summer (early July) and can continue, given favorable environmental conditions, until the onset of frost (Figure 1.2). The flowers of individuals in this population were a uniform pale-pink, and some plants reached 1.2 m in height. The collections PZ11-022 from Woodford County, Kentucky, and PZ12-109 from Claiborne County, Tennessee include plants that are all morphologically similar.
PZ12-106 was collected in Campbell County, Tennessee on the Cumberland Plateau. The characters of the inflorescence suggest this is P. amplifolia, but the foliage is intermediate between P. amplifolia and P. paniculata. A similar collection from Tucker County, West Virginia, PZ11-010, appears to be morphogically intermediate as well. This collection flowers as early as the end of May in cultivation at the OPGC; it is the earliest flowering accession of any collected in subsection Paniculatae.
PZ10- 229 was collected from the western limit of the species in Barry County, Missouri. This small population was growing in talus at the base of a steep slope in a 67
mesic, forested habitat. Unfortunately these plants perished before further evaluation could take place."