منابع مشابه
Factors limiting hybridization between Penstemon spectabilis and Penstemon centranthifolius
Speciation involves the formation of reproductive isolating mechanisms such as a difference in pollinators, incompatibility between pollen tubes and stylar tissue, hybrid seed abortion, or poor growth of hybrid seedlings. We studied reproductive isolating mechanisms in naturally sympatric populations of Penstemon spectabilis Thurber and Penstemon centranthifolius (Benth.) Benth. where F1 hybrid...
متن کاملMolecular and morphological evidence for Penstemon luculentus (Plantaginaceae): a replacement name for Penstemon fremontii var. glabrescens
Penstemon luculentus R.L.Johnson & M.R.Stevens, nom. nov. replaces Penstemon fremontii var. glabrescens Dorn & Lichvar. The varietal name glabrescens was not elevated because it was already occupied by Penstemon glabrescens Pennell, a different species. This new arrangement is supported by molecular and morphological evidence. An analysis of genetic diversity in populations of both varieties of...
متن کاملSurvival, reproductive output, and transplant potential of Penstemon tubiflorus (tube penstemon)
Survival, reproductive output, and transplant success were studied for an Iowa population ofPenstemon tubiflorus (tube penstemon), a species that is rare to uncommon through much of its range. The population was discovered in 2003 and is one of only 6 populations that have been documented in Iowa. I began monitoring the new population when 2 cohorts were permanently marked, the first in 2005 an...
متن کاملNomenclatural novelties and notes in Penstemon (Plantaginaceae)
Seven nomenclatural novelties in Penstemon (Plantaginaceae) are proposed for taxa that will be included in the forthcoming treatment of the genus in the Flora of North America North of Mexico series. Three additional novelties are made for Mexican taxa outside the flora area. Penstemon xylus A. Nelson is determined to be the correct name for the species heretofore called P. tusharensis N. Holmg...
متن کاملPOTENTIAL DISTRIBUTION MODELING OF pensTeMOn OKlaHOMensis (PLANTAGINACEAE)
penstemon oklahomensis is an endemic to the southern plains region that occurs in Oklahoma and one location in Texas. As an aid to conservation of this species, we used a species distribution model to map the possible extent of penstemon oklahomensis in Oklahoma. Location data were derived from specimens in the Oklahoma Vascular Plants Database and occurrence records maintained by the Oklahoma ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: HortScience
سال: 2009
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.44.3.852