Morpho-anatomical features of fronds of some fern species of the order Polypodiales
نویسندگان
چکیده
Уточнены некоторые морфолого-анатомические признаки ваий восьми видов папоротников нашей полосы, такие как особенности жилкования, анатомическая структура пластинки, типы устьичного аппарата, характер опушения. В соответствии с указанными признаками приведена сравнительная характеристика видов. Показано, что отмеченные являются дополнительными характеристиками и имеют диагностическое значение Some morpho-anatomical traits of fronds, such as venation pattern, the anatomical structure lamina, stomatal types, and pubescence characteristics, eight fern species from Middle Russia are described. Following indicated elements, a comparative characteristic is given. It shown that noted morphological features can serve additional characteristics diagnostic value.
منابع مشابه
the impact of skopos on syntactic features of the target text
the present study is an experimental case study which investigates the impacts, if any, of skopos on syntactic features of the target text. two test groups each consisting of 10 ma students translated a set of sentences selected from advertising texts in the operative and informative mode. the resulting target texts were then statistically analyzed in terms of the number of words, phrases, si...
15 صفحه اولextensions of some polynomial inequalities to the polar derivative
توسیع تعدادی از نامساوی های چند جمله ای در مشتق قطبی
15 صفحه اولanalysis of reading comprehension needs of the students of paramedical studies: the case of the students of health information management (him)
چکیده ندارد.
15 صفحه اولsome properties of fuzzy hilbert spaces and norm of operators
in this thesis, at first we investigate the bounded inverse theorem on fuzzy normed linear spaces and study the set of all compact operators on these spaces. then we introduce the notions of fuzzy boundedness and investigate a new norm operators and the relationship between continuity and boundedness. and, we show that the space of all fuzzy bounded operators is complete. finally, we define...
15 صفحه اولthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
ذخیره 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: Vestnik Tverskogo gosudarstvennogo universiteta
سال: 2021
ISSN: ['1995-0152']
DOI: https://doi.org/10.26456/vtbio226