Structure and Development of Sphenophyllum oblongifolium from the Upper Carboniferous of France [0.03%]
法国上石炭纪Sphenophyllum oblongifolium的结构及发育
J Galtier,V Daviero V
J Galtier
Variation in branching pattern and leaf morphology in Sphenophyllum oblongifolium are investigated based on new compression material from the Upper Carboniferous (Stephanian) of France. Morphometric analysis reveals correlation between seve...
SEM Studies on Vessels in Ferns. XV. Selected Rosette Epiphytes (Aspleniaceae, Elaphoglossaceae, Vittariaceae) [0.03%]
轮藻门蕨类植物管胞的扫描电镜研究 第一部分铁角蕨科、凤尾蕨科和水龙骨科附生种类的研究
EL Schneider,S Carlquist
EL Schneider
Tracheary elements from macerations of roots and rhizomes of Asplenium nidus, Elaphoglossum hirtum, and Vittaria lineata were studied by means of SEM. All of these have perforation plates in tracheary elements of both roots and rhizomes. Th...
Floral Ontogeny and Morphology in Subfamily Spiraeoideae Endl. (Rosaceae) [0.03%]
Rosaceae绣线菊亚科的花发育和形态学研究
RC Evans,TA Dickinson
RC Evans
"Spiraeoideae," as traditionally circumscribed, contain the greatest diversity of floral organ morphology of any of the four subfamilies in the Rosaceae. Comparisons of mature floral morphology in 10 spiraeoid genera demonstrate that genera...
Floral Ontogeny and Morphology in Subfamily Amygdaloideae T. & G. (Rosaceae) [0.03%]
桃亚科(T.&G.)的花发育和形态学研究(蔷薇科)
RC Evans,TA Dickinson
RC Evans
Relationships within the Amygdaloideae have long been a point of discussion in Rosaceae systematics. Oemleria, a monotypic genus, has been removed from the Amygdaloideae because of its five-pistillate gynoecium since all other genera have a...
Phylogeny of Marsileaceous Ferns and Relationships of the Fossil Hydropteris pinnata Reconsidered [0.03%]
矛蕨目的系统发育及化石Hydropteris pinnata的亲缘关系需再考虑
KM Pryer
KM Pryer
Recent phylogenetic studies have provided compelling evidence that confirms the once disputed hypothesis of monophyly for heterosporous leptosporangiate ferns (Marsileaceae and Salviniaceae). Hypotheses for relationships among the three gen...
Evolutionary Changes in Floral Structure within Lepidium L. (Brassicaceae) [0.03%]
莱普蒂姆属(十字花科)花部结构的进化变化
JL Bowman,H Brüggemann,JY Lee et al.
JL Bowman et al.
The basic floral ground plan is remarkably constant across Brassicaceae. However, within Lepidium (ca. 175 species), deviations from this ground plan are common, with over half of Lepidium species having only two stamens rather than the usu...
Genetic Isolation among Host Races of the Anther Smut Fungus Microbotryum violaceum on Three Host Plant Species [0.03%]
寄生于三种寄主植物上的花瓣柄锈真菌(Microbotryum violaceum)生态型间的遗传分化
JA Shykoff,A Meyhöfer,E Bucheli
JA Shykoff
Genetic isolation among strains of the plant pathogenic fungus Microbotryum violaceum on three species of its host plants was examined. Fungal strains collected from a sympatric population of all three host plant species were examined for t...
Genetic and Floral Divergence among Sympatric Populations of Gymnadenia conopsea s.l. (Orchideaceae) with Different Flowering Phenology [0.03%]
具有不同开花期的铁兰(Gymnadeniopsis conopsea s.l.)同步种群间的基因和花部器官分化
M Soliva,A Widmer
M Soliva
Gymnadenia conopsea s.l. is a common orchid in central Europe, where early- and late-flowering populations can be distinguished. The early-flowering form is recognized as subspecies conopsea and the late-flowering form as subspecies densifl...
Fecundity above the Species Level: Ovule Number and Brood Size in the Genisteae (Fabaceae: Papilionoideae) [0.03%]
种水平以上的繁殖力：鸡眼藤亚族（蝶形花科）的胚珠数量和窝卵数
J Herrera
J Herrera
Per-fruit components of fecundity (ovules per ovary, seeds per fruit, seed : ovule ratio, and patterns of seed maturation within pods) were studied in 33 species of the Genisteae, a legume tribe of mostly Mediterranean shrubs, e.g., Cytisus...
Gametophytic Plasticity among Four Species of Ferns with Contrasting Ecological Distributions [0.03%]
四种生态分布迥异的蕨类植物的配子体可塑性
GK Greer,BC McCarthy
GK Greer
The goals of this study were to test the hypothesis that plasticity of life history traits is greater among species with broad ecological distributions than among species with narrow ecological distributions and to determine whether homospo...