Results 51 to 60 of about 384 (121)

PCA of Weichselia and of extant fern pinnae.

open access: yes, 2019
A. Weichselia reticulata. B. Matonia pectinta. C. Angiopteris evecta. D-E. Sphaeropteris cooperi primary and secondary pinnae respectively. F. Woodwardia unigemmata. Scale bars = 1cm.
Jesús Marugán-Lobón (153200)   +4 more
core   +1 more source

A molecular phylogeny of scaly tree ferns (Cyatheaceae)

open access: yes, 2007
Tree ferns recently were identified as the closest sister group to the hyperdiverse clade of ferns, the polypods. Although most of the 600 species of tree ferns are arborescent, the group encompasses a wide range of morphological variability, from ...
Petra Korall   +10 more
core   +2 more sources

Sinuous rachis in extant ferns.

open access: yes, 2019
A, S morphology in Polistichum setiferum (Forssk.) Moore ex Woynar. B, Sinuous rachis in Sphaeropteris cooperi (F. Muell) R.M Tryon. C, Plagiotropic Adiantum L. with sinuous rachis.
Jesús Marugán-Lobón (153200)   +4 more
core   +1 more source

Global biogeography of scaly tree ferns (Cyatheaceae): Evidence for Gondwanan vicariance and limited transoceanic dispersal

open access: yes, 2020
Aim: Scaly tree ferns, Cyatheaceae, are a well-supported group of mostly tree-forming ferns found throughout the tropics, the subtropics and the south-temperate zone. Fossil evidence shows that the lineage originated in the Late Jurassic period.
Pryer, KM, Korall, P
core   +2 more sources

A synopsis of the Neotropical species of Cyathea (Cyatheaceae; Polypodiopsida) with bipinnate fronds

open access: yes, 2017
A synopsis of all Neotropical species of Cyathea with bipinnate fronds is presented. This artificial group includes 27 species with entire or very shallowly lobed pinnules.
Weigand, Anna, Lehnert, Marcus
core   +1 more source

A revised typification of Cyathea jacobsii and a new combination in Sphaeropteris (Cyatheaceae)

open access: yes
A new combination is made for Cyathea × lathamii Holttum under the genus Sphaeropteris Bernh. as S. × lathamii (Holttum) Deroliya, Sanjeet Kumar & R.Kr.Singh. The current neotype of Cyathea jacobsii Holttum is incorrect according to Article 9.13 of the ICN, as syntypes are extant at L. The specimen at L (L1259840) is designated as the lectotype for the
Deroliya, Purushottam Kumar   +2 more
openaire   +2 more sources

Propagación de dos helechos arborescentes (Cyatheaceae) del bosque nuboso guatemalteco por medio de tres metodologías diferentes

open access: yesCiencia, Tecnología y Salud
Los helechos arborescentes de la familia Cyatheaceae están en especial peligro. Son organismos de crecimiento lento, y su extracción de los bosques originarios para el uso como sustituto de sustrato para bromelias y orquídeas ha colocado en riesgo las ...
Andrea Cabarrús
doaj  

Efectos de plantaciones abandonadas de especies exóticas y nativas sobre la regeneración natural de un bosque montano en Colombia

open access: yesRevista de Biología Tropical, 1999
Se realizaron censos de vegetación durante 1994 en una parcela de 0.1 ha. en cada una de las plantaciones abandonadas de Pinus radiata, Cupressus lusitanica, Eucalyptus globulus, Alnus acuminata y en un bosque secundario montano alto en los Andes ...
Jaime Cavelier, Carolina Santos
doaj  

[[alternative]]The Study of Genetic Structure of Sphaeropteris lepifera(Hook.)

open access: yes, 2010
[[abstract]]筆筒樹是蕨類植物的一種,屬於欏科(Cyatheaceae)。主要分布在 亞洲大陸邊緣的島嶼上如臺灣、琉球、菲律賓。臺灣位居這一個島弧的中 點,這個島上的筆筒樹族群結構自然值得深入研究。本研究旨在檢視臺灣 各地區筆筒樹的亞族群遺傳結構情形。總共檢查十八個亞族群,十三種同 功酵素,包含十六個基因座。各採樣點的平均族群遺傳變異度理論值(HE) 為0.057,範圍介於0.050-0.063之間,實際觀測值(HO)為0.064,範圍介於 0.035-0.082之間,總遺傳變異度(HT)為0.
[[author]]Mei-Lien Chen   +3 more
core  

New records, names and combinations of scaly tree ferns (Cyatheaceae) in eastern Malesia

open access: yes, 2017
Several scaly tree ferns (Cyatheaceae) from eastern Malesia are transferred from Cyathea s.lat. to other genera: Alsophila roroka from Sulawesi; Alsophila lamoureuxii from New Guinea; Alsophila binayana, A. bisquamata, A. mapahuwensis, A. murkelensis, A.
Coritico, F.P.   +5 more
core   +1 more source

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