- Responses of two bunchgrasses to nitrogen addition in tallgrass prairie: the role of bud bank demography
[作者:Dalgleish, HJ; Kula, AR; Hartnett, DC; Sandercock, BK,期刊:American Journal of Botany, 页码:672-680 , 文章类型: Article,,卷期:2008年95-6]
- Growth of tallgrass prairie plants, many of which maintain substantial bud banks, can be limited by nitrogen (N), water, and/or light. We hypothesized that tallgrass prairie plants respond to increases in N through demog...
- Fossil Cyclanthus (Cyclanthaceae, Pandanales) from the Eocene of Germany and England
[作者:Smith, SY; Collinson, ME; Rudall, PJ,期刊:American Journal of Botany, 页码:688-699 , 文章类型: Article,,卷期:2008年95-6]
- The first known fossil fruits and seeds of Cyclanthaceae are described here. Cyclanthus messelensis sp. nov., from the Middle Eocene of Messel, Germany, has discoidal fruiting cycles up to 6 cm in diameter, with a centra...
- Hybridization between invasive Spartina densiflora (Poaceae) and native S-foliosa in San Francisco Bay, California, USA
[作者:Ayres, DR; Grotkopp, E; Zaremba, K; Sloop, CM; Blum, MJ; Bailey, JP; Anttila, CK; Strong, DR,期刊:American Journal of Botany, 页码:713-719 , 文章类型: Article,,卷期:2008年95-6]
- Rapid evolution in contemporary time can result when related species, brought together through human-aided introduction, hybridize. The significant evolutionary consequences of post-introduction hybridization range from ...
- Origin and evolution of the northern hemisphere disjunction in the moss genus Homalothecium (Brachytheciaceae)
[作者:Huttunen, S; Hedenas, L; Ignatov, MS; Devos, N; Vanderpoorten, A,期刊:American Journal of Botany, 页码:720-730 , 文章类型: Article,,卷期:2008年95-6]
- Competing hypotheses that rely either on a stepping-stone dispersal via the North Atlantic or the Bering land bridges, or more recent transoceanic dispersal, have been proposed to explain the disjunct distribution of Med...
- Strait of Gibraltar: An effective gene-flow barrier for wind-pollinated Carex helodes (Cyperaceae) as revealed by DNA sequences, AFLP, and cytogenetic variation
[作者:Escudero, M; Vargas, P; Valcarcel, V; Luceno, M,期刊:American Journal of Botany, 页码:745-755 , 文章类型: Article,,卷期:2008年95-6]
- The Strait of Gibraltar is the most important barrier disconnecting the landmasses of Europe and Africa on the western Mediterranean extreme. Carex helodes is a wind-pollinated species endemic to the western Mediterranea...
- Phylogenetic, morphological, and chemotaxonomic incongruence in the North American endemic genus Echinacea
[作者:Flagel, LE; Rapp, RA; Grover, CE; Widrlechner, MP; Hawkins, J; Grafenberg, JL; Alvarez, I; Chung, GY; Wendel, JF,期刊:American Journal of Botany, 页码:756-765 , 文章类型: Article,,卷期:2008年95-6]
- The study of recently formed species is important because it can help us to better understand organismal divergence and the speciation process. However, these species often present difficult challenges in the field of mo...
- Patterns of cell division in the filamentous Desmidiaceae, close green algal relatives of land plants
[作者:Hall, JD; McCourt, RM; Delwiche, CF,期刊:American Journal of Botany, 页码:643-654 , 文章类型: Article,,卷期:2008年95-6]
- Patterns of cell division and cross wall formation vary among the charophytes, green algae closely related to land plants. One group of charophytes, the conjugating green algae (Zygnematophyceae), is species-rich and is ...
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