Population Size and Geographical Distribution of Clematis Fremontii Var. Riehlii
نویسندگان
چکیده
منابع مشابه
Chemical constituents from Clematis delavayi var. spinescens.
A new coumarin, 7-hydroxy-4,6-dimethoxy-5-methylcoumarin (1), was isolated from the aerial parts of Clematis delavayi var. spinescens together with 17 known compounds. Their structures were identified by extensive spectral analysis, especially 2D NMR techniques. Antiangiogenic effects of all compounds were evaluated using a zebrafish model.
متن کاملlanguage learning strategies and vocabulary size of iranian efl learners
learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...
Growth habit and mechanical architecture of the sand dune-adapted climber Clematis flammula var. maritima L.
Clematis flammula var. maritima is a woody lianoid plant that grows on coastal sand dunes in the Mediterranean region. Older perennial stems are present as extensive underground axes. These generate surface growth of shorter-lived stems producing monospecific trellises above the surface of the sand. Despite its sand dune habitat and shortage of host support plants, this variety of Clematis show...
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 کاملInfluence of geographical distribution, body size and diet on population density of benthic fishes off Namibia (South West Africa)
This study supports the hypothesis that species tend to become rarer towards the limits of their geographic distribution. Over-all species abundance is positively correlated with the size of the area occupied. However, body size is a weak predictor of the abundance of benthic fish species. It is suggested that habitat complexity, competition or other factors regulate patterns of species abundance.
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: Annals of the Missouri Botanical Garden
سال: 1943
ISSN: 0026-6493
DOI: 10.2307/2394344