Results 41 to 50 of about 1,004 (148)

Primary and secondary thickening in the stem of Cordyline fruticosa (Agavaceae) [PDF]

open access: yes, 2010
The growth in thickness of monocotyledon stems can be either primary, or primary and secondary. Most of the authors consider this thickening as a result of the PTM (Primary Thickening Meristem) and the STM (Secondary Thickening Meristem) activity.
CATTAI, Marina B., MENEZES, Nanuza L. de
core   +2 more sources

Inflorescence Architecture and Floral Morphology of Aratitiyopea lopezii (Xyridaceae) [PDF]

open access: yes, 2007
Aratitiyopea lopezii is a robust perennial species of Xyridaceae from seasonally saturated, mid- to high-elevation, sandstone and granite sites in northern South America. The species lacks the scapose inflorescence characteristic of Xyridaceae and, having
Campbell, Lisa M, Stevenson, Dennis Wm.
core   +3 more sources

Studies on Hanguana (Commelinales, Hanguanaceae) for Sunda II: Five new forest species from Peninsular Malaysia and recircumscription of Hanguana malayana [PDF]

open access: yesWilldenowia, 2010
Field work in Peninsular Malaysia as part of the first author's research into relationships and evolutionary polarity between Hanguana malayana, a widespread freshwater helophyte, and the numerous and mostly undescribed Sundaic forest species has to date resulted in the collection of five distinctive novel forest-dwelling Hanguana species.
Siti Nurfazilah, Bt Abdul Rahman   +3 more
openaire   +2 more sources

Traits, habitats, and clades: Identifying traits of potential importance to environmental filtering [PDF]

open access: yes, 2009
Environmental filtering is a fundamental process in the ecological assembly of communities. Recently developed phylogenetic tools identify patterns associated with environmental filtering across whole communities.
Ackerly, David D.   +2 more
core   +1 more source

The immature stages and biology of two Xenapates species in West Africa (Hymenoptera, Tenthredinidae) [PDF]

open access: yes, 2016
The immature stages and host plants of Xenapates Kirby, 1882 were hitherto unknown. We describe the larvae, prepupae and pupae of X. braunsi (Konow, 1896) and X. gaullei (Konow, 1896), and record observations on aspects of their biology. The relationship
Goergen, Georg E.   +2 more
core   +2 more sources

Specific duplication and dorsoventrally asymmetric expression patterns of Cycloidea-like genes in zygomorphic species of Ranunculaceae. [PDF]

open access: yes, 2014
Floral bilateral symmetry (zygomorphy) has evolved several times independently in angiosperms from radially symmetrical (actinomorphic) ancestral states. Homologs of the Antirrhinum majus Cycloidea gene (Cyc) have been shown to control floral symmetry in
Cossard, G.   +5 more
core   +5 more sources

ツユクサ科(ツユクサ目)の系統と分類 [PDF]

open access: yes, 2021
京都大学新制・課程博士博士(理学)甲第23047号理博第4724号新制||理||1677(附属図書館)京都大学大学院理学研究科生物科学専攻(主査)教授 田村 実, 教授 鹿内 利治, 教授 工藤 洋学位規則第4条第1項該当Doctor of ScienceKyoto ...
Lee, Chung-Kun
core   +1 more source

Nectarios septales, superficies nectaríferas, coléteres, y aspectos relacionados con la polinización en "Canna lineata" Ciciarelli ("Cannaceae"-Zingiberales) [PDF]

open access: yes, 2014
This manuscript encompasses part of a study carried out on the structure and anatomy of flowers in C. lineata. Glandular nectariferous epidermal surfaces, nectar guides of androecium pieces, septal nectaries and colleters of the ovary have been described
Ciciarelli, María de las Mercedes
core   +2 more sources

Ecological Diversity of Summer Maize Weed Species in the Western Mid‐Hills of Nepal

open access: yesInternational Journal of Agronomy, Volume 2026, Issue 1, 2026.
Maize (Zea mays L.) cultivation in the mid‐hills of Nepal is vital for food security but faces significant yield losses due to weed competition. The two‐year (2023–2024) phytosociological study on summer maize was conducted to assess weed diversity and dynamics in randomly selected 40 farmers’ fields of Puranchaur, Dhikidada, Gharmi, and Lamachaur at ...
Dinesh Marasini   +4 more
wiley   +1 more source

Profundizando en la evolución de los helechos: un enfoque mecanicista a los principales conceptos y técnicas de estudio [PDF]

open access: yes, 2014
In this review, we report on the most important ideas and features in the field of fern evolution, with particular interest into the main evolutionary mechanisms that shaped the evolutionary history of their diversification. An exhaustive account for the
Ainoüche, Abdelkader   +2 more
core   +2 more sources

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