Fern Notes from the South
نویسندگان
چکیده
منابع مشابه
Notes on Barnsley Fern
An affine transformation on the plane is a mapping T that preserves collinearity and ratios of distances: given two points A and B, if C is the middle of the segment [A,B] then T (C) is the middle of the segment [T (A), T (B)]. Translations, contractions, expansions, reflections, rotations, are all particular cases of affine transformations. In general, an affine transformation T maps a point (...
متن کاملNotes on the Lichen Genus Hypotrachyna (Parmeliaceae) from South Korea
Hypotrachyna (Vainio) Hale is a somewhat rare lichen genus found on the Korean Peninsula. Since it was first recorded more than two decades ago, no detailed taxonomic or revisionary study of the genus has been conducted. Thus, the present study was conducted to carry out a detailed taxonomic and revisionary study of Hypotrachyna in South Korea. This study was based on specimens deposited in the...
متن کاملNovel Flavonoids from the Fern Notholaena sulphurea
T he m ajo r constituent of the yellow frond exudate of the fern Notholaena sulphurea was iden tified by spectroscopic m ethods as 3 ,5 ,2 '-trihydroxy-7-m ethoxy-8-acetoxy flavone and its struc tu re was confirm ed by synthesis. This novel natural flavonoid was also de tected in the frond exudate of five o ther Notholaena species. In the yellow form of N. sulphurea, the rare 5 ,2 'dihydroxy-7,...
متن کاملNotes from a field hospital south of Mosul
This short letter from the field is offered as a rapid communiqué of the emergency medical situation in Mosul and surrounding areas on the eve of the final onslaught to liberate the city. This letter is based on emergency medical work at two World Health Organization (WHO) and Ministry of Health (MoH) Iraq lead Role II+ Field Hospital facilities south of Mosul City from April to June 2017; thes...
متن کاملNew Species of the Fern Genus Lindsaea (Lindsaeaceae) from New Guinea with Notes on the Phylogeny of L. sect. Synaphlebium
To determine the taxonomic identities and the systematic positions of some collections of Lindsaea sect. Synaphlebium (Lindsaeaceae) from Papua New Guinea, we conducted morphological comparisons and phylogenetic analyses on the whole section. A total of 22 morphological characters were selected and coded for each of all known taxa in L. sect. Synaphlebium, and were analyzed using maximum parsim...
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: American Fern Journal
سال: 1911
ISSN: 0002-8444
DOI: 10.2307/1544582